I discovered your channel recently when I was looking for information about reupholstering couch cushions. While you are both expert upholsterers, what brought me back was the beautiy of your relationship; there is something so special going on between the two of you. Clicking on your link to look at foam pricing, it was expired. I Googled, and my heart broke to learn of your father's passing 💔 Truly. I have been thinking of your family ever since. Grant, I hope the memories of filming these vides with your father bring you peace and joy always.
1. I would like to compliment you both on how polite you are to each other; I am very impressed by that. 2. Thank you for sharing how to replace cushions. My husband and I recently bought foam to replace our seat cushions and basically winged it, but after watching your videos we see that we are not that far off. What we were surprised to learn when we deconstructed the seat cushions (hoping to use them for our back cushions that were filled with polyfill) was that the seat cushions have springs in the center. No wonder they did not hold up!!!! So what we have done is remove one side of the seat cushion, wrapped batting around it and shoved it into the back cushion (we removed the polyfill). If this does not work, we will get the less denser foam that you refer to in this video.
Hi, thank you so much for watching our videos! We really do appreciate your very kind compliments and you reaching out to tell us. We’re very glad to hear that our video is helpful! And I think it’s great that you are reusing what you already have to better your sofa. Please keep us posted on how it goes. And if you need any help please let us know! Thanks again for watching, all the best, Grant
This is so beautiful to watch, the respect of the father to his son and the son's respect towards his father. There is much good to say about the excellent work you do and share but my heart is filled with joy to see your relationship lived out for the world to see. Thank you for that.
You guys are so cute together & very helpful... I started with the poly fill video which I’ve already done several times, then i found this one - THANK YOU. My Aussie terrier loves to sit/sleep up on the back of my couch, she mashes it down, so I’ve become familiar with re fill but just want to not have to do this every 3 weeks - thank you
Hey there Erin, thank you for watching and leaving a comment. Yes it’s an ongoing problem with pets, and with poly fill back cushions. Note the solid foam in the video would help a lot, but there is an alternative is a double shredded foam easier to work with and faster to get done. But it’s not quite as resilient as a solid piece of foam but it’s the next best thing . Here’s the video title, for some reason it link the video I don’t think. Permanently Fix Your Sagging Back Cushions and Get More Support - Here's How... by the way you look cute too lol. I hope this helps you and again thank you for watching. Cheers, Paul
Found this because I was looking for a guide to make cushions. Subbed because I'm planning to make my own couch start to finish and you guys have a great vibe, good video production and take your time to learn others. Greetings from the Netherlands
The Netherlands wow awesome! Thank you so much for watching your videos! We’re so glad that you like them and find them helpful! It’s great that you’re taking on this project. If you don’t mind please send us a photo of your work at our email address videos@urbancastlesolutions.com. And if you have any questions in regards to your project you can contact us there or via our live chat at our website ucprivatecourses.com All the best, Grant
You are awesome!! I want to make my own couch as well! I’m a tiny woman at 4’ 9” and 100 lbs., but if I had some help, I could do it! I think! Lol! Please post pics when it’s done or I’ll give you an address to send me a pic! I’m so excited for you! 💫💕
@@ucsolutionsgivingmore I actually never got a notification of your reply, thank you so much !! Sadly due to the closing of construction stores I haven't been able to build my frame yet. I hope this will change soon and I will definately send you some pictures!
Hi. your videos are very informative. Thank you for making this video. Before i saw these videos, I had bought 2.8 density 50 compression foam for my couch seats. That is the perfect firmness for us. We want a somewhat firm back foam cushion too. In this video you mention to not go more than 20 compression for back seating foam. What would you recommend as a back foam for us- i mean what density/compression? The 2 men who use this couch are over 200lbs and over 6ft tall :) I first thought that 2.8 density and 35 compression back cushion might be ok but worried it might be too firm so thinking of the 2.6 density and 27 compression foram? Thoughts? I dont see a reason to buy a 1.8 density foam when similar compressions or firmness is available in the 2.8/
I've wanted to know what makes a quality cushion for a long time. Thank you for sharing your expertise. Do you still plan to show how to replace the knife edge back cushion shown at 3:15? Is it possible to replace or convert a knife edge polyfill back box cushions?
Hello Julia, thank you for your comment. Yes we do have plans to do the knife edge cushion. However we have been so very busy not sure when we can. Yes you can convert a knife edged cushion into a boxed. HOWEVER, not easily the top of the cushion the fabric and the sides is making the bands. PLUS you would need fabric for the bands themselves,you CAN NOT use the existing fabric on the cushion tops and the sides as bands. I don't know if you have extra matching fabric or not for this task. In short you can, but I don't see it to easy or even worth it. I hope this has given you some idea of what's involved and has answered your question. Please share and subscribe. Cheers, Paul
QUESTION: My friend has exact cushions you demonstrated. HOWEVER - back cushions are attached to back of the couch. Along the top back, and inner side - there are (2) cushions. There is a zipper along the bottom. You think I could get foam up in there, being they're attached at those two places? ALSO, depth of each cushion is 6 inches. Height is 21" x Width is 39". I think I could trace a pattern from existing cushion. Cut the foam. Line with Dacron. Sew a slip cover for ease of sliding in. I still might have to wrap in SilkEase and use a vacuum to squish it down enough to slip it into the cover. I like a challenge, but even I'm not sure I'm ready for this one. What do you think? I am a home sewer, but like to help friends and family when I can.
This is a great tutorial. I very much appreciate the detail that you both include here. Given that you recommend a density of 18 and a compression of 20 for backing cushions I was a bit disappointed to see that UCSolutions doesn't carry this in their custom cut section. I'd rather not purchase an entire slab. Any suggestions?
Hello there, thank you for watching the video I’m glad you found it informative. The 1820 foam is only recommended for back cushions, as you stated in your comment. Back cushions can get very complicated that’s why we only sell the slab for individuals to do it themselves. There’s knife edge styles, L styles with curves going over the arm of the furniture, and some curve quite a bit sometimes. We don’t have a diagram that someone could follow and trace or measure the cushions themselves and for us to cut it. So I hope this makes sense I wish I could be more help to you but back cushions or a total different animal. Cheers, Paul
Hello Norma, Thank you for watching the video, I am so glad you enjoyed it. Yes, measure from the cover or you can trace the cover with scrap fabric you have lying around. Be sure in either case to keep the seams as straight as possible. I hope this helps you, hey if you have another question let us know. Please share the videos we really would appreciate it. Cheers, Paul
Instead of using permanent marker, you can use an erasable fabric marker to trace around the fabric. (Found in fabric stores usually in the sewing notions area.) Those usually can be "washed" out with water and/or fade over time. This way you shouldn't have to worry if you accidentally hit the fabric. Then if you don't feel the line is dark enough to follow when cutting the foam you can just trace over it with the permanent marker.
Hi there Faethunder, I want to thank you very much for watching the video and leaving this comment. That’s an excellent idea I have use those in the past and you’re right a little bit of water makes the mark fade. Again an excellent suggestion and thank you for watching the video. Please share the videos with others, it helps a great deal when you do. Cheers, Paul
The thing is the “bad example” cushion is more what i want my current back cushions are made of foam and so uncomfortable i want them to be much less rigid is there a case or solution for that?
I thought you guys were friends! I had no idea you were dad and son! You rock! 💕💫 This is THE best video! I inherited a couch that was squished because the back was filled with poly foam and feathers, and there’s three chambers inside the wrapping that goes inside the upholstery fabric. Any suggestions as to whether to supplement with poly foam and cover with Dacron, or put a cushion on it? I’d rather do that, but then I have to dump the insides and cut up the chambers (I’m guessing). Thank you for these videos and the tips! 💕💫
Hey Kathryn, Thanks so much for watching our videos! We really appreciate your very kind compliments! In your case you have a few options for refreshing the back cushion. You could add more feathers to the channels. Or you could replace the feathers with our shredded back cushion foam. You could also replace the insert and use a solid foam piece if the cover is boxed with a band on top. I’d be happy to walk you through this project so if you have any other questions please let me know! All the best, Grant
@@ucsolutionsgivingmore Thank you so much for your offer to help me! I’m debating different options because I do have a dog who likes to sit on the back of the couch and look out the window, but I also want a new couch! Maybe if I give you the a description, you could let me know what would be my best option. There are two large cushions that have the extension on the sides that go over the arms. They are 6” thick and the longest part across each one is 42”. I know how to sew, so that may help! At first I was just going to do the foam cut to size with the Dacron around, but I don’t know if I should save the inside part where the feathers and batting are. I could also cut out the chambers and put the foam inside the inside cover. Or, I think you also offer the foam and cover to put inside the fabric of the couch. Or, as you said, fill it with “stuff” and staple Dacron around to fill it up more. When I looked online at Joann Fabrics, I saw foam and a silky cover to help it slide inside the cushion. Not sure about that. I need to do something that’s not too expensive because I’m having financial issues lately due to family and my own health problems. But, I’m sick of looking at a couch with no back cushions! Lol! It’s so attractive! Thank you so very much for responding! I never thought you would! I live in Michgan. Is shipping expensive to where I am? 💕💫🙏☀️
You have some great options there! I appreciate you describing your circumstances it does definitely help with making the right decision. The first option of adding additional fill to the current inserts and wrapping them with Dacron will be the least expensive. However, unfortunately, it doesn’t always last very long. Especially if your dog sits on top of the back cushions. The second option of replacing the current insert with a solid foam insert wrapped with dacron which is the best option for longevity however it is the most expensive. And replacing the current fill inside the insert cover with shredded foam is the best middle-ground option it’s less expensive than a solid insert and will hold up better than just adding additional fill. We do ship to Michigan and the flat rate cost for shipping is $30. We’re sorry to hear about the health issues, please contact us on our live chat before you order since we’ll offer you a discount there. Our website is ucprivatecourses.com
Great job 👍👏❤️ Back saggy cushions are terrible looking. They would drive me insane. You guys are so clever. . I’d like to ask you guys a question about a couch fabric , But not sure if you only deal with the inner stuffing parts only ?? If you know about the different fabrics ? Could you let me know please. I have only one question to ask about my new lounge fabric. . I wish you guys were here in Australia. 😢
Hello Marilyn, thanks so much for watching glad you liked it. Sure what question do you have, I might be able to help you with a fabric question. We do work with Fabrics. Let me know, cheers, Paul
ucsolutions Thanku for replying. I just want to know , Do you think most fabric lounges ( I think mine is a Polyester) It’s tightly woven and charcoal grey colour. I’ve only had it for about roughly 4 or 5 months. I love the style. It’s a two seater. The part where I’ve been sitting mostly has become a bit fluffy. Not complete pilling and mostly on the arm rest. Would you think this is normal from maybe friction from my clothes ? Against the fabric ? I’ve bought a fabric shaver with a protective shield covering the blade. So it says it’s safe and won’t make holes. Bit scared to use it though. Anyway, Do you think the fluffing/ slight pilling ? is a normal occurrence with fabric lounges. Sorry such a long message for one question. 🤪.
The reason I wish you guys were here in Australia is because I can see how passionate you both are in your profession , And I can see you both are perfectionist in what you do. If I need a cushion re stuffed I’d want people like you two to do the job for me. So many people out there that do shoddy work. It’s so rare to see men like you both that are so dedicated to doing things to perfection 👍👏
Hey Marilyn, yes I do know what you’re talking about. I would consider that Pilling. The fabric shaver should not put a hole in the fabric, you should be fine using it. And a big no on that as far as is this normal. 4 to 5 months there’s no way it should be doing that. Sounds like it has a low double rub content or value. Double rubs are a way the fabric manufacturers test the durability of a fabric. I would prefer 13,000 double rubs and higher for any house furniture. So another words 20,000 double rubs would be 40,000 single passes of abrasion on the fabric before it starts doing what you’re talking about or possibly worse. It sounds like a low quality fabric unfortunately. Check the manufacturer and see if there’s a warranty, or perhaps you bought an extended warranty. I hope this helps you. Cheers, Paul
ucsolutions Thankyou so much. I am on a tight budget. The lounge was from a store that sells low price furniture. It was Aus $400. So I guess I got what I paid for. I think I’ll keep it for a while then buy a more expensive one from a different store. You get what you pay for I guess ? Thanks so much for the reply. P .S. I appreciate the information you gave me about the (Double Rubs). It will be on my mind when I go to buy a different more expensive lounge. And if the store can’t tell me about the fabric I’ll know why. This info you gave me should be helpful to a lot of other people reading this. Thanks again.
Love your video, but I have a couple of questions: (1) Why are you adding in the 1/2 inch seam allowance? Is it to make sure the cushion fills out the area, knowing that it will compress when put in the cushion? (2) Qhy so you cover the foam with dacron? I am going to recover and replace the foam for some cushions. Once I got the fabric off, they don't seem to have anything covering them except some plastic that didn't cover the whole foam piece. I can't quite figure out why that was there.
Hi Mary, Great question! Yes the we added the seam allowance to help fill out the cover, also the Dacron helps in that area as well. The plastic you are referring to might have been used to make the insert go into the cover easier, since bare foam is a terrible pain to get in a cover, since it provides immense friction. I hope this helps, if it did please share the video with others! All the Best, Grant
Excellent information, I am going to recover 6 Kitchen chairs and I need foam for them, what can you suggest and can I purchase from you? I want something that will last and be very comfortable, I almost thought about buying a 4" mattress topper and cut from that. It looks like you have an excellent Father / Son relationship congratulations..
Hi Timothy, Thanks for watching our videos! Great question, for dining chairs we suggest 2” or max 3” foam depending on the current foam thickness. And a compression of 45 at a density of 26. Here is a link to our website where you can order that. ucprivatecourses.com/index.php/product/seat-back-cushion-foam-inserts/ Thanks for watching don’t forget to share with anybody who you think this might help! All the best, Grant
@@ucsolutionsgivingmore OH OH your website says you do not ship to California is that true? If so can you recommend another supplier? I want to buy the 6 foam pieces for my chairs from your site ? what can we do? I know I can trust you Gentlemen. God Bless!
Hi guys, I have watched several of your videos. They are very informative. Just bought a new couch and after testing it in the store and making sure it felt comfortable, I sadly discovered at home that it gives me a lower back ache when sitting on it for more than 15 minutes. I checked the foam cushions and they have 2040 stamped on them. Which one is the density number, the 20 or the 40? I am thinking of replacing with a better foam. Our old couch actually had innerspring cushions. The back of the couch is constructed of 4 big throw pillows that are so densely stuffed that they make my shoulder blades hurt.
Hi Angelika, Thank you so much for checking out our videos! Great question, it’s hard to say if those numbers actually represent the density or the compression. Since each manufacturer chooses to list or not list the compression or density. And if they do list it it’s using their own terminologies. Right now my question would be how do you describe your seat cushions are they too firm or too soft? Knowing this will best help me to direct you to the right compression
Hello Patricia, Yes you can replace them with removable back cushions. But you will need to have new covers made first .If you would be happy with throw pillows if they gave you more support. Then you might want to consider filling them with double shredded foam, gives the support of foam and easy to work with. We do sell it at ucprivatecourses.com I hope this has helped you. Thank you for watching,please share the video it really helps. Cheers, Paul
Hey Becky, I just saw this comment. But looks like you’re on the track to getting shredded foam. It’s an excellent choice it’s the combination between with the flexibility of poly fill, but offers the support of a solid piece of foam. You can keep your inserts and fill them with the shredded foam putting it in those channels that you were mentioning in your comment I have a feeling you found the right video on what to do. Again if you have any questions there’s live chat on the website. We can exchange phone numbers to if you need to talk on the phone. Thanks all the best, Paul
@ucsolutions Super video thank you, trying to apply it in France! What density (kg / m3) and hardness (kPa) would you recommend for a 30-cm thick foam for couch back cushion? And is it fine to glue together multiple thinner foams if you can't find the thickness you need, eg. glue 3 layers, 10cm thick each, to get a combined thickness of 30 cm? Details: We have an angled couch with an oversized seat (like 90 cm seat depth) and no back cushions (only some pillows) so I'm trying to make some very thick back cushions for it. There would be one cushion of 195cm x 60cm for the long side of the couch and another one of 165cm x 60cm for the shorter side. Both would be 36 cm thick in the end (3 foams of 10cm glued to each others plus dacron wrapping on both sides (2 x 3 cm). The foam types I've found on amazon.fr that provide such large sizes are only 3 types: 18 kg/m3 density with 2.8 kPa hardness, 25 kg / m3 density with 4.4 kPa hardness and 35 kg/m3 density with 4.3 kPa hardness. I find it hard to choose (I'd think 4.3-4.4 kPa is too hard, 2.8 kPa would be better feeling for the back but then 18 kg/m3 sounds like too low density (the 1.8 pounds/ft3 that you recommend in your video would equal with 28 kg/m3). I've never done anything like this but your video got me into the mood. Your feedback would be very much appreciated!
Hi there, thank you for watching the video I can try my best to help you with the situation. 30 cm seems to be near 12 inches. It’s very thick so I would go with a soft compression. Density it’s about quality so back cushions don’t need to be that dense, you could do a 1.8 density and it still last for many many years. Seat cushions take most of the brunt. So high density Is recommended for seat cushions. I think your seat cushion is pretty thick the general rule is the thicker the foam the soft or you can go with. The Dacron just gives a nice feel no support at all it has some other advantages as well that you’ll benefit from. Like not wearing the fabric out or breaking down the foam as fast.Yes you can glue several layers on to make the size thickness you need length or even depth. Following the directions in the video should make the cover fill out nicely meaning 1 inch all the way around. I hope this has helped you with your project and again thank you for watching. Cheers, Paul
Hi Alison, Thanks for commenting! Great question, adding foam inserts in a Knife-Edge back cushion won't ruin it. Though it would be more difficult to do than a boxed cushion. To minimize the boxy effect of the insert on the Knife-Edge cushion cover you should probably trim the edges off the top of the insert and wrap dacron over it. This will smooth out the top and make it rounded. Hopefully, this helps! If you need foam you can get it at ucprivatecourses.com and if you have any questions you can comment here or on the live chat at ucprivatecourses.com. All the Best, Grant
I added poly fill to my sofa after watching your other video, but my cushions turned out round more like bed pillows, maybe I put too much in. I think I would like foam better. My sofa is just under 4 years old now, I don’t feel like I should have to be doing all this already, it’s Bernhardt so I thought I was getting decent quality, the bottom cushions have feathers and they come out through the cover, is that normal for feathers? Never had them in a sofa before.
Hi Elizabeth, Really appreciate you watching our videos! Yes unfortunately it can be really easy to overfill back cushions. Especially since poly fill has no set shape like foam, it will just as quickly fill out as it will push up. If your cushions are boxed though you would be a good candidate for foam inserts. As far as the feathers coming out of your seat cushion, that is common however it is not correct. This is a sign of inferior ticking (or inner cover) that holds the feathers, it’s a problem that many people live with though. It should not get substantially worse than it is already. I hope this helps! If you need any foam or tools check out our store here: ucprivatecourses.com P.S. I haven’t worked with Bernhardt furniture enough to tell you if it is good quality or not. All the best, Grant
Hey there Cooper, No we haven’t done a knife edge back cushion video yet. But you can fill a back cushion with shredded poly foam. Go to UCprivatecourses.com We just started selling it. You can fill a back cushion with shredded foam it’s superior to poly fill check it out. Thanks for watching please share. Cheers, Paul
I have a back cushion that a) has no insert (just clumping polyfi) and no zipper! It's square and has a half T. I removed all of the polysilicon and am washing the cover. I don't sew very well and I don't have a sewing machine. How do I refill this?
Hi The Menendi, Thanks for watching our videos! Great question, you have one of two options. One, is to wrap the existing poly fill in a layer of Dacron and add this back to the cushion cover. The layer of Dacron will help cut the lumpiness of the poly fill. The second option is to replace the poly fill with shredded foam using the same method with the Dacron wrap Here are two videos that show the process I’m talking about a little bit more in depth. I hope this helps! Thanks again for watching our video! Permanently Fix Your Sagging Back Cushions and Get More Support - Here’s How... th-cam.com/video/5037r0_sajQ/w-d-xo.html DIY! How to fix flat back cushions for sofas or chairs SAVE BIG!! th-cam.com/video/8WCuBBBkGzo/w-d-xo.html
@@ucsolutionsgivingmore Thank you so much for responding! That sounds amazing. Much, much simpler than the Styrofoam core. I even repeatedly stepped on them in hopes that I could reshape them. It would have made for a funny video!
Thanks for the detailed instructions! I'm going to give it a try on our 5 cushions that are all V shaped thanks to our pup. Is there a new coupon code by chance??
Hi Jennifer, Thank you so much for checking out our videos! Glad to hear that you’re about to take on this project. You can use the coupon code save10 to save10% off your order
Nice video. Where is your shop located? I'd like to reupholster my sectional that I bought from Bassett, and the foam is compressed after only 3 years :( and we're very careful with our furniture.
We are in Maryland, right outside of Washington DC. Where are you located? Glad you liked the video thanks for watching, please share the videos it helps us when you do. Cheers, Paul
Is there any way to do a foam filler if the cushions are attached to the back of the sofa with a zipper at the bottom? I just purchased a La-Z Boy sofa 6 months ago and the back cushions are already so baggy. So Disappointed and need help!
Hi Ariel, Yes, you would need a scrap piece of fabric to trace the existing cushions. This will be your template to cut the foam (you would cut a 1/2" outside of you template to get the desired fullness). Or you could measure seam to seam following the measuring chart that we have here: ucprivatecourses.com/product/sofa-seat-cushions-foam-inserts/. If you need foam please make sure to order 18 density 20 compression since anything more will be too stiff. I hope this helps! All the Best, Grant
please can you help me ? I am wanting to change my occasional chairs that are fully upholstered and have zig zag springs -into upholstry with a loose cushion to sit on. How do I do the seat? I have previously upholstered them the same as they were when I bought them.
Hello Melene, Please send a photo of the chair to videos@urbancastlesolutions.com. So I can see what you are talking about. It’s not clear to me. Let me know in the comments again when you sent the photo so I look for it, we get a lot of emails. Thanks, Paul
melenè lewis Hey we did look for your email we’re not seeing it all the way back to October 30 we checked the spam as well. Please check to see if you got the email address correct I see when I typed you the email address it had a period after.com if you put the period in it may not of gone through that was a typo on my end, so please let me know. Cheers, Paul
Alternatively, how to measure the couch to make new box edge cushions from scratch to simply replace the knife edge ones that are horrifically not beagle friendly!
Hello Kathryn, thank you for your comment, I apologize for the late response we have been very busy and just now catching up on the comments. YES! We have been planning on it, honestly now its finding the time to do so. I believe it is a much needed video. Sorry I don't one for you now. Again thank you, please share our videos, it helps us when you do. All the best, Paul
@@ucsolutionsgivingmore hey there Will. I just watched some of your stuff and winged it I got poly batting, half inch. And legit made my own back cushion insert (just by using the cushion cover as a guide). I can't sew so stapled it. Saw you do that. Filled it with polly fill. Did it again for the next one. They look brand new. Cheerio!
Hey that’s awesome, millions of people could do the same thing. It would keep us from throwing our furniture out into landfills, so quickly. A large majority complain about the back cushions and not sure how to fix it. That’s perfect thanks for sharing that it really it made my week knowing we had part in your success. Cheers, Paul
Thank you for watching. I have never had a problem with using staples nor one complaint from my clients. If the staple is in bedded correctly then it's not coming out. I hope this helped you. Cheers, Paul
Great video, thank you. I have poly filled back cushions that I am tired of fixing. So I understand it correctly, you used 1.8 (or. 18) density with 20 compression for this particular cushion? Thank you very much from St Pete Florida. Stay safe.
Hi Mary, Thank you so much for watching our videos! And I totally understand, I would be tried of continually adding poly fill to my back cushions as well. Yes, you are correct you would need to use a 18 density 20 compression foam for your back cushions. Or you could use our shredded foam back cushion fill which is the same cost and easier to work with. Here is a video about it: Permanently Fix Your Sagging Back Cushions and Get More Support - Here's How... th-cam.com/video/5037r0_sajQ/w-d-xo.html Hope this help! All the Best, Grant
I discovered your channel recently when I was looking for information about reupholstering couch cushions. While you are both expert upholsterers, what brought me back was the beautiy of your relationship; there is something so special going on between the two of you. Clicking on your link to look at foam pricing, it was expired. I Googled, and my heart broke to learn of your father's passing 💔 Truly. I have been thinking of your family ever since. Grant, I hope the memories of filming these vides with your father bring you peace and joy always.
1. I would like to compliment you both on how polite you are to each other; I am very impressed by that. 2. Thank you for sharing how to replace cushions. My husband and I recently bought foam to replace our seat cushions and basically winged it, but after watching your videos we see that we are not that far off. What we were surprised to learn when we deconstructed the seat cushions (hoping to use them for our back cushions that were filled with polyfill) was that the seat cushions have springs in the center. No wonder they did not hold up!!!! So what we have done is remove one side of the seat cushion, wrapped batting around it and shoved it into the back cushion (we removed the polyfill). If this does not work, we will get the less denser foam that you refer to in this video.
Hi, thank you so much for watching our videos! We really do appreciate your very kind compliments and you reaching out to tell us. We’re very glad to hear that our video is helpful! And I think it’s great that you are reusing what you already have to better your sofa. Please keep us posted on how it goes. And if you need any help please let us know! Thanks again for watching, all the best, Grant
This is so beautiful to watch, the respect of the father to his son and the son's respect towards his father. There is much good to say about the excellent work you do and share but my heart is filled with joy to see your relationship lived out for the world to see. Thank you for that.
I am so glad you added the follow up to the previous back pillow project. I like this one very much.
Thank you so much for watching Jean! Really glad to hear that you like this one!
I love watching these guys, not only is there a lot of love between them but they are very skilled. I pray the father is doing well.
You guys are so cute together & very helpful... I started with the poly fill video which I’ve already done several times, then i found this one - THANK YOU. My Aussie terrier loves to sit/sleep up on the back of my couch, she mashes it down, so I’ve become familiar with re fill but just want to not have to do this every 3 weeks - thank you
Hey there Erin, thank you for watching and leaving a comment. Yes it’s an ongoing problem with pets, and with poly fill back cushions. Note the solid foam in the video would help a lot, but there is an alternative is a double shredded foam easier to work with and faster to get done. But it’s not quite as resilient as a solid piece of foam but it’s the next best thing . Here’s the video title, for some reason it link the video I don’t think. Permanently Fix Your Sagging Back Cushions and Get More Support - Here's How... by the way you look cute too lol. I hope this helps you and again thank you for watching. Cheers, Paul
Found this because I was looking for a guide to make cushions. Subbed because I'm planning to make my own couch start to finish and you guys have a great vibe, good video production and take your time to learn others. Greetings from the Netherlands
The Netherlands wow awesome! Thank you so much for watching your videos! We’re so glad that you like them and find them helpful! It’s great that you’re taking on this project. If you don’t mind please send us a photo of your work at our email address videos@urbancastlesolutions.com. And if you have any questions in regards to your project you can contact us there or via our live chat at our website ucprivatecourses.com All the best, Grant
You are awesome!! I want to make my own couch as well! I’m a tiny woman at 4’ 9” and 100 lbs., but if I had some help, I could do it! I think! Lol!
Please post pics when it’s done or I’ll give you an address to send me a pic!
I’m so excited for you! 💫💕
@@ucsolutionsgivingmore I actually never got a notification of your reply, thank you so much !! Sadly due to the closing of construction stores I haven't been able to build my frame yet. I hope this will change soon and I will definately send you some pictures!
Thank you @@Tinyteacher1111 you most certainly can do it!!
Thank you so much for helping me find foam for my DIY OUTDOOR FURNITURE SUCH A GREAT PRICE
So glad we could help! Thanks for watching
very nice job and it helps us to see the work you guys do and use any staples
Hi. your videos are very informative. Thank you for making this video. Before i saw these videos, I had bought 2.8 density 50 compression foam for my couch seats. That is the perfect firmness for us. We want a somewhat firm back foam cushion too. In this video you mention to not go more than 20 compression for back seating foam. What would you recommend as a back foam for us- i mean what density/compression? The 2 men who use this couch are over 200lbs and over 6ft tall :) I first thought that 2.8 density and 35 compression back cushion might be ok but worried it might be too firm so thinking of the 2.6 density and 27 compression foram? Thoughts? I dont see a reason to buy a 1.8 density foam when similar compressions or firmness is available in the 2.8/
You guys are great!!
Hey April,
Thanks for watching and for your very kind comment!
Paul and Grant
I've wanted to know what makes a quality cushion for a long time. Thank you for sharing your expertise. Do you still plan to show how to replace the knife edge back cushion shown at 3:15? Is it possible to replace or convert a knife edge polyfill back box cushions?
Hello Julia, thank you for your comment. Yes we do have plans to do the knife edge cushion. However we have been so very busy not sure when we can. Yes you can convert a knife edged cushion into a boxed. HOWEVER, not easily the top of the cushion the fabric and the sides is making the bands. PLUS you would need fabric for the bands themselves,you CAN NOT use the existing fabric on the cushion tops and the sides as bands. I don't know if you have extra matching fabric or not for this task. In short you can, but I don't see it to easy or even worth it. I hope this has given you some idea of what's involved and has answered your question. Please share and subscribe. Cheers, Paul
QUESTION: My friend has exact cushions you demonstrated. HOWEVER - back cushions are attached to back of the couch. Along the top back, and inner side - there are (2) cushions. There is a zipper along the bottom. You think I could get foam up in there, being they're attached at those two places? ALSO, depth of each cushion is 6 inches. Height is 21" x Width is 39". I think I could trace a pattern from existing cushion. Cut the foam. Line with Dacron. Sew a slip cover for ease of sliding in. I still might have to wrap in SilkEase and use a vacuum to squish it down enough to slip it into the cover. I like a challenge, but even I'm not sure I'm ready for this one. What do you think? I am a home sewer, but like to help friends and family when I can.
This is a great tutorial. I very much appreciate the detail that you both include here. Given that you recommend a density of 18 and a compression of 20 for backing cushions I was a bit disappointed to see that UCSolutions doesn't carry this in their custom cut section. I'd rather not purchase an entire slab. Any suggestions?
Hello there, thank you for watching the video I’m glad you found it informative. The 1820 foam is only recommended for back cushions, as you stated in your comment. Back cushions can get very complicated that’s why we only sell the slab for individuals to do it themselves. There’s knife edge styles, L styles with curves going over the arm of the furniture, and some curve quite a bit sometimes. We don’t have a diagram that someone could follow and trace or measure the cushions themselves and for us to cut it. So I hope this makes sense I wish I could be more help to you but back cushions or a total different animal. Cheers, Paul
This is fantastic! If a liner exists do you measure from the liner or from the actual cover.
Hello Norma,
Thank you for watching the video, I am so glad you enjoyed it. Yes, measure from the cover or you can trace the cover with scrap fabric you have lying around. Be sure in either case to keep the seams as straight as possible. I hope this helps you, hey if you have another question let us know. Please share the videos we really would appreciate it. Cheers, Paul
Instead of using permanent marker, you can use an erasable fabric marker to trace around the fabric. (Found in fabric stores usually in the sewing notions area.) Those usually can be "washed" out with water and/or fade over time. This way you shouldn't have to worry if you accidentally hit the fabric. Then if you don't feel the line is dark enough to follow when cutting the foam you can just trace over it with the permanent marker.
Hi there Faethunder, I want to thank you very much for watching the video and leaving this comment. That’s an excellent idea I have use those in the past and you’re right a little bit of water makes the mark fade. Again an excellent suggestion and thank you for watching the video. Please share the videos with others, it helps a great deal when you do. Cheers, Paul
I have that other pillow type that I’m trying to fix. Any videos on that?
The thing is the “bad example” cushion is more what i want my current back cushions are made of foam and so uncomfortable i want them to be much less rigid is there a case or solution for that?
I thought you guys were friends! I had no idea you were dad and son! You rock! 💕💫
This is THE best video! I inherited a couch that was squished because the back was filled with poly foam and feathers, and there’s three chambers inside the wrapping that goes inside the upholstery fabric.
Any suggestions as to whether to supplement with poly foam and cover with Dacron, or put a cushion on it? I’d rather do that, but then I have to dump the insides and cut up the chambers (I’m guessing).
Thank you for these videos and the tips! 💕💫
Hey Kathryn,
Thanks so much for watching our videos! We really appreciate your very kind compliments! In your case you have a few options for refreshing the back cushion. You could add more feathers to the channels. Or you could replace the feathers with our shredded back cushion foam. You could also replace the insert and use a solid foam piece if the cover is boxed with a band on top.
I’d be happy to walk you through this project so if you have any other questions please let me know!
All the best,
Grant
@@ucsolutionsgivingmore Thank you so much for your offer to help me! I’m debating different options because I do have a dog who likes to sit on the back of the couch and look out the window, but I also want a new couch!
Maybe if I give you the a description, you could let me know what would be my best option. There are two large cushions that have the extension on the sides that go over the arms. They are 6” thick and the longest part across each one is 42”. I know how to sew, so that may help!
At first I was just going to do the foam cut to size with the Dacron around, but I don’t know if I should save the inside part where the feathers and batting are. I could also cut out the chambers and put the foam inside the inside cover. Or, I think you also offer the foam and cover to put inside the fabric of the couch. Or, as you said, fill it with “stuff” and staple Dacron around to fill it up more.
When I looked online at Joann Fabrics, I saw foam and a silky cover to help it slide inside the cushion. Not sure about that.
I need to do something that’s not too expensive because I’m having financial issues lately due to family and my own health problems.
But, I’m sick of looking at a couch with no back cushions! Lol! It’s so attractive!
Thank you so very much for responding! I never thought you would! I live in Michgan. Is shipping expensive to where I am? 💕💫🙏☀️
You have some great options there! I appreciate you describing your circumstances it does definitely help with making the right decision. The first option of adding additional fill to the current inserts and wrapping them with Dacron will be the least expensive. However, unfortunately, it doesn’t always last very long. Especially if your dog sits on top of the back cushions. The second option of replacing the current insert with a solid foam insert wrapped with dacron which is the best option for longevity however it is the most expensive. And replacing the current fill inside the insert cover with shredded foam is the best middle-ground option it’s less expensive than a solid insert and will hold up better than just adding additional fill. We do ship to Michigan and the flat rate cost for shipping is $30. We’re sorry to hear about the health issues, please contact us on our live chat before you order since we’ll offer you a discount there. Our website is ucprivatecourses.com
@@ucsolutionsgivingmore Thank you so much!
Great job 👍👏❤️ Back saggy cushions are terrible looking. They would drive me insane. You guys are so clever. . I’d like to ask you guys a question about a couch fabric , But not sure if you only deal with the inner stuffing parts only ?? If you know about the different fabrics ? Could you let me know please. I have only one question to ask about my new lounge fabric. . I wish you guys were here in Australia. 😢
Hello Marilyn, thanks so much for watching glad you liked it. Sure what question do you have, I might be able to help you with a fabric question. We do work with Fabrics. Let me know, cheers, Paul
ucsolutions Thanku for replying. I just want to know , Do you think most fabric lounges ( I think mine is a Polyester) It’s tightly woven and charcoal grey colour. I’ve only had it for about roughly 4 or 5 months. I love the style. It’s a two seater. The part where I’ve been sitting mostly has become a bit fluffy. Not complete pilling and mostly on the arm rest. Would you think this is normal from maybe friction from my clothes ? Against the fabric ? I’ve bought a fabric shaver with a protective shield covering the blade. So it says it’s safe and won’t make holes. Bit scared to use it though. Anyway, Do you think the fluffing/ slight pilling ? is a normal occurrence with fabric lounges. Sorry such a long message for one question. 🤪.
The reason I wish you guys were here in Australia is because I can see how passionate you both are in your profession , And I can see you both are perfectionist in what you do. If I need a cushion re stuffed I’d want people like you two to do the job for me. So many people out there that do shoddy work. It’s so rare to see men like you both that are so dedicated to doing things to perfection 👍👏
Hey Marilyn, yes I do know what you’re talking about. I would consider that Pilling. The fabric shaver should not put a hole in the fabric, you should be fine using it. And a big no on that as far as is this normal. 4 to 5 months there’s no way it should be doing that. Sounds like it has a low double rub content or value. Double rubs are a way the fabric manufacturers test the durability of a fabric. I would prefer 13,000 double rubs and higher for any house furniture. So another words 20,000 double rubs would be 40,000 single passes of abrasion on the fabric before it starts doing what you’re talking about or possibly worse. It sounds like a low quality fabric unfortunately. Check the manufacturer and see if there’s a warranty, or perhaps you bought an extended warranty. I hope this helps you. Cheers, Paul
ucsolutions Thankyou so much. I am on a tight budget. The lounge was from a store that sells low price furniture. It was Aus $400. So I guess I got what I paid for. I think I’ll keep it for a while then buy a more expensive one from a different store. You get what you pay for I guess ? Thanks so much for the reply. P .S. I appreciate the information you gave me about the (Double Rubs). It will be on my mind when I go to buy a different more expensive lounge. And if the store can’t tell me about the fabric I’ll know why. This info you gave me should be helpful to a lot of other people reading this. Thanks again.
Love your video, but I have a couple of questions: (1) Why are you adding in the 1/2 inch seam allowance? Is it to make sure the cushion fills out the area, knowing that it will compress when put in the cushion? (2) Qhy so you cover the foam with dacron? I am going to recover and replace the foam for some cushions. Once I got the fabric off, they don't seem to have anything covering them except some plastic that didn't cover the whole foam piece. I can't quite figure out why that was there.
Hi Mary,
Great question! Yes the we added the seam allowance to help fill out the cover, also the Dacron helps in that area as well. The plastic you are referring to might have been used to make the insert go into the cover easier, since bare foam is a terrible pain to get in a cover, since it provides immense friction.
I hope this helps, if it did please share the video with others!
All the Best,
Grant
Excellent information, I am going to recover 6 Kitchen chairs and I need foam for them, what can you suggest and can I purchase from you? I want something that will last and be very comfortable, I almost thought about buying a 4" mattress topper and cut from that. It looks like you have an excellent Father / Son relationship congratulations..
Hi Timothy,
Thanks for watching our videos! Great question, for dining chairs we suggest 2” or max 3” foam depending on the current foam thickness. And a compression of 45 at a density of 26.
Here is a link to our website where you can order that. ucprivatecourses.com/index.php/product/seat-back-cushion-foam-inserts/
Thanks for watching don’t forget to share with anybody who you think this might help!
All the best,
Grant
@@ucsolutionsgivingmore OH OH your website says you do not ship to California is that true? If so can you recommend another supplier?
I want to buy the 6 foam pieces for my chairs from your site ? what can we do? I know I can trust you Gentlemen. God Bless!
Hi guys, I have watched several of your videos. They are very informative. Just bought a new couch and after testing it in the store and making sure it felt comfortable, I sadly discovered at home that it gives me a lower back ache when sitting on it for more than 15 minutes. I checked the foam cushions and they have 2040 stamped on them. Which one is the density number, the 20 or the 40? I am thinking of replacing with a better foam. Our old couch actually had innerspring cushions. The back of the couch is constructed of 4 big throw pillows that are so densely stuffed that they make my shoulder blades hurt.
Hi Angelika,
Thank you so much for checking out our videos! Great question, it’s hard to say if those numbers actually represent the density or the compression. Since each manufacturer chooses to list or not list the compression or density. And if they do list it it’s using their own terminologies. Right now my question would be how do you describe your seat cushions are they too firm or too soft? Knowing this will best help me to direct you to the right compression
@@ucsolutionsgivingmore they do feel firm
I have throw pillows for back cushioning and it is horrible, can I make and use regular back cushions?? guess I would have to get covers for the foam?
Hello Patricia, Yes you can replace them with removable back cushions. But you will need to have new covers made first .If you would be happy with throw pillows if they gave you more support. Then you might want to consider filling them with double shredded foam, gives the support of foam and easy to work with. We do sell it at ucprivatecourses.com I hope this has helped you. Thank you for watching,please share the video it really helps. Cheers, Paul
What do you suggest for back cushions that have channels that are stuffed with polyfill? I’d like to replace with foam to keep them from sagging.
Hey Becky, I just saw this comment. But looks like you’re on the track to getting shredded foam. It’s an excellent choice it’s the combination between with the flexibility of poly fill, but offers the support of a solid piece of foam. You can keep your inserts and fill them with the shredded foam putting it in those channels that you were mentioning in your comment I have a feeling you found the right video on what to do. Again if you have any questions there’s live chat on the website. We can exchange phone numbers to if you need to talk on the phone. Thanks all the best, Paul
@ucsolutions Super video thank you, trying to apply it in France! What density (kg / m3) and hardness (kPa) would you recommend for a 30-cm thick foam for couch back cushion? And is it fine to glue together multiple thinner foams if you can't find the thickness you need, eg. glue 3 layers, 10cm thick each, to get a combined thickness of 30 cm? Details: We have an angled couch with an oversized seat (like 90 cm seat depth) and no back cushions (only some pillows) so I'm trying to make some very thick back cushions for it. There would be one cushion of 195cm x 60cm for the long side of the couch and another one of 165cm x 60cm for the shorter side. Both would be 36 cm thick in the end (3 foams of 10cm glued to each others plus dacron wrapping on both sides (2 x 3 cm). The foam types I've found on amazon.fr that provide such large sizes are only 3 types: 18 kg/m3 density with 2.8 kPa hardness, 25 kg / m3 density with 4.4 kPa hardness and 35 kg/m3 density with 4.3 kPa hardness. I find it hard to choose (I'd think 4.3-4.4 kPa is too hard, 2.8 kPa would be better feeling for the back but then 18 kg/m3 sounds like too low density (the 1.8 pounds/ft3 that you recommend in your video would equal with 28 kg/m3). I've never done anything like this but your video got me into the mood. Your feedback would be very much appreciated!
Hi there, thank you for watching the video I can try my best to help you with the situation. 30 cm seems to be near 12 inches. It’s very thick so I would go with a soft compression. Density it’s about quality so back cushions don’t need to be that dense, you could do a 1.8 density and it still last for many many years. Seat cushions take most of the brunt. So high density Is recommended for seat cushions. I think your seat cushion is pretty thick the general rule is the thicker the foam the soft or you can go with. The Dacron just gives a nice feel no support at all it has some other advantages as well that you’ll benefit from. Like not wearing the fabric out or breaking down the foam as fast.Yes you can glue several layers on to make the size thickness you need length or even depth. Following the directions in the video should make the cover fill out nicely meaning 1 inch all the way around. I hope this has helped you with your project and again thank you for watching. Cheers, Paul
Would using this strategy on a knife-edge cushion completely ruin it? or could you just add more batting to the sides to add some roundness to it?
Hi Alison,
Thanks for commenting! Great question, adding foam inserts in a Knife-Edge back cushion won't ruin it. Though it would be more difficult to do than a boxed cushion. To minimize the boxy effect of the insert on the Knife-Edge cushion cover you should probably trim the edges off the top of the insert and wrap dacron over it. This will smooth out the top and make it rounded. Hopefully, this helps! If you need foam you can get it at ucprivatecourses.com and if you have any questions you can comment here or on the live chat at ucprivatecourses.com.
All the Best,
Grant
I added poly fill to my sofa after watching your other video, but my cushions turned out round more like bed pillows, maybe I put too much in. I think I would like foam better. My sofa is just under 4 years old now, I don’t feel like I should have to be doing all this already, it’s Bernhardt so I thought I was getting decent quality, the bottom cushions have feathers and they come out through the cover, is that normal for feathers? Never had them in a sofa before.
Hi Elizabeth,
Really appreciate you watching our videos! Yes unfortunately it can be really easy to overfill back cushions. Especially since poly fill has no set shape like foam, it will just as quickly fill out as it will push up. If your cushions are boxed though you would be a good candidate for foam inserts. As far as the feathers coming out of your seat cushion, that is common however it is not correct. This is a sign of inferior ticking (or inner cover) that holds the feathers, it’s a problem that many people live with though. It should not get substantially worse than it is already.
I hope this helps!
If you need any foam or tools check out our store here:
ucprivatecourses.com
P.S. I haven’t worked with Bernhardt furniture enough to tell you if it is good quality or not.
All the best,
Grant
Good
Did you ever do a video explaining how to do something similar for a knife's edge cushion. I would prefer to move away from poly fill in my cushion.
Hey there Cooper,
No we haven’t done a knife edge back cushion video yet. But you can fill a back cushion with shredded poly foam. Go to UCprivatecourses.com We just started selling it. You can fill a back cushion with shredded foam it’s superior to poly fill check it out. Thanks for watching please share. Cheers, Paul
I have a back cushion that a) has no insert (just clumping polyfi) and no zipper! It's square and has a half T. I removed all of the polysilicon and am washing the cover. I don't sew very well and I don't have a sewing machine. How do I refill this?
Hi The Menendi,
Thanks for watching our videos! Great question, you have one of two options. One, is to wrap the existing poly fill in a layer of Dacron and add this back to the cushion cover. The layer of Dacron will help cut the lumpiness of the poly fill. The second option is to replace the poly fill with shredded foam using the same method with the Dacron wrap
Here are two videos that show the process I’m talking about a little bit more in depth.
I hope this helps! Thanks again for watching our video!
Permanently Fix Your Sagging Back Cushions and Get More Support - Here’s How...
th-cam.com/video/5037r0_sajQ/w-d-xo.html
DIY! How to fix flat back cushions for sofas or chairs SAVE BIG!!
th-cam.com/video/8WCuBBBkGzo/w-d-xo.html
@@ucsolutionsgivingmore Thank you so much for responding! That sounds amazing. Much, much simpler than the Styrofoam core. I even repeatedly stepped on them in hopes that I could reshape them. It would have made for a funny video!
Thanks for the detailed instructions! I'm going to give it a try on our 5 cushions that are all V shaped thanks to our pup. Is there a new coupon code by chance??
Hi Jennifer,
Thank you so much for checking out our videos! Glad to hear that you’re about to take on this project. You can use the coupon code save10 to save10% off your order
@@ucsolutionsgivingmore Thank you SO MUCH. Ordering now!
Thank you, Jennifer!
Nice video. Where is your shop located? I'd like to reupholster my sectional that I bought from Bassett, and the foam is compressed after only 3 years :( and we're very careful with our furniture.
We are in Maryland, right outside of Washington DC. Where are you located? Glad you liked the video thanks for watching, please share the videos it helps us when you do. Cheers, Paul
Is there any way to do a foam filler if the cushions are attached to the back of the sofa with a zipper at the bottom? I just purchased a La-Z Boy sofa 6 months ago and the back cushions are already so baggy. So Disappointed and need help!
Hi Ariel,
Yes, you would need a scrap piece of fabric to trace the existing cushions. This will be your template to cut the foam (you would cut a 1/2" outside of you template to get the desired fullness). Or you could measure seam to seam following the measuring chart that we have here: ucprivatecourses.com/product/sofa-seat-cushions-foam-inserts/.
If you need foam please make sure to order 18 density 20 compression since anything more will be too stiff.
I hope this helps!
All the Best,
Grant
Where can ifind the sponge for sofa cushions
please can you help me ? I am wanting to change my occasional chairs that are fully upholstered and have zig zag springs -into upholstry with a loose cushion to sit on. How do I do the seat? I have previously upholstered them the same as they were when I bought them.
Hello Melene, Please send a photo of the chair to videos@urbancastlesolutions.com. So I can see what you are talking about. It’s not clear to me. Let me know in the comments again when you sent the photo so I look for it, we get a lot of emails. Thanks, Paul
Hi Paul, I have sent a photo to the email address --Thanks a Lot for you assistance.
Hi Paul - I sent you an email and photo - it would be great if you could advise me please. Thanks a lot.
melenè lewis Hey we did look for your email we’re not seeing it all the way back to October 30 we checked the spam as well. Please check to see if you got the email address correct I see when I typed you the email address it had a period after.com if you put the period in it may not of gone through that was a typo on my end, so please let me know. Cheers, Paul
thanks will try sending it again ----sent again at at 11.02pm South African time on 9Nov 2019 .
Can you post something about how to deal with a knife edge back cushion.
Alternatively, how to measure the couch to make new box edge cushions from scratch to simply replace the knife edge ones that are horrifically not beagle friendly!
Hello Kathryn, thank you for your comment, I apologize for the late response we have been very busy and just now catching up on the comments. YES! We have been planning on it, honestly now its finding the time to do so. I believe it is a much needed video. Sorry I don't one for you now. Again thank you, please share our videos, it helps us when you do. All the best, Paul
@@ucsolutionsgivingmore hey there
Will. I just watched some of your stuff and winged it
I got poly batting, half inch. And legit made my own back cushion insert (just by using the cushion cover as a guide). I can't sew so stapled it. Saw you do that.
Filled it with polly fill.
Did it again for the next one.
They look brand new.
Cheerio!
*well
Hey that’s awesome, millions of people could do the same thing. It would keep us from throwing our furniture out into landfills, so quickly. A large majority complain about the back cushions and not sure how to fix it. That’s perfect thanks for sharing that it really it made my week knowing we had part in your success. Cheers, Paul
Do the staples ever work out ?
Thank you for watching. I have never had a problem with using staples nor one complaint from my clients. If the staple is in bedded correctly then it's not coming out. I hope this helped you. Cheers, Paul
Great video, thank you. I have poly filled back cushions that I am tired of fixing. So I understand it correctly, you used 1.8 (or. 18) density with 20 compression for this particular cushion? Thank you very much from St Pete Florida. Stay safe.
Hi Mary,
Thank you so much for watching our videos! And I totally understand, I would be tried of continually adding poly fill to my back cushions as well. Yes, you are correct you would need to use a 18 density 20 compression foam for your back cushions. Or you could use our shredded foam back cushion fill which is the same cost and easier to work with. Here is a video about it: Permanently Fix Your Sagging Back Cushions and Get More Support - Here's How...
th-cam.com/video/5037r0_sajQ/w-d-xo.html
Hope this help! All the Best, Grant