DIY Radiant Barrier Installation Directly Over Insulation In Cold or Mixed Climates. Easy Install!
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- เผยแพร่เมื่อ 17 พ.ย. 2014
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In this video Ed shows you how to install AtticFoil™ radiant barrier foil over (on top of) your existing insulation to maximize the benefit in the cold months of winter.
For customers who live in COLD CLIMATES and are considering this installation method but have moisture concerns, please check out our SuperPerf™ radiant barrier that was developed to lay on top of attic insulation but is guaranteed not to trap moisture!
SuperPerf™ compared to Original AtticFoil™: • Attic Insulation - Eas...
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Shop for SuperPerf™ Radiant Barrier for Cold Climates here: atticfoil.com/index.php/super...
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WHY you should install radiant barrier AtticFoil™ over your insulation VIDEO here: • Improving R-value with...
I live in the Dallas area. Would it be a wise choice to lay radiant foil on top of the insulation along with mounting it above underneath the roof ? Or this is double work and not effective?
+bigred3282 It really depends. Stapling up WITH ductwork in the attic will have the biggest impact in the Summer. Laying it out over the insulation will have the biggest benefit in the Winter. Usually, here in Texas people go for the big Summer benefit by stapling up. However, we have had many customers do BOTH with spectacular year-round benefit. Once you staple it up, laying it out should be pretty easy if you are looking for a cold weather benefit too.
Thank you!
EXCELLENT video and explanations!!!
Previously I thought that the radiant barrier only worked by installing (stapling) on the underside of the roof. So I avoided a whole section of the roof because I was not able to get into that area to install on the roof/top underside.
Straight forward and to the point ! I don't see that very often...Thanks !!
At 15:30 your drill suggestion answered my question - very clever & simple!
Great video. Thanks for taking the time to make this!
I just installed attic foil in my house and I love it. It took me a couple of weekends to install, so after the first weekend I used a temperature gun to see if there was any difference in temperature. Area which was covered with attic foil was much cooler than the areas that were not covered yet. attic foil also a very strong product it is hard to tare. attic foil is a great investment 👍
How much has it changed your electric bill during the summer hot months. Just a general idea is good
The sunnier/hotter the area the bigger the savings. Also, one story ranch style homes get better results compared to two story "cake" homes since it only reduces heat through the top/roof area. It basically make is like shade or a cloudy day for the roof. Savings are hard to pin down. I'd read some of the 2000 reviews on www.AtticFoil.com Many customers tell about their savings.
Very well done, practical and clear
Nicely done! Thank you!
awesome videos!!! very informative!
Thank you! Excellent video.
execellent video very informative
man this is an excellent video. im going to install myself you answered every question i had.
Thank you!
Awesome information
Good afternoon:
I have seen your products on you tube and have viewed several, I plan on using it in the future. My question today is: Do you carry a product or products that can be used in and on crawl space and basements; if so great! Application to the outside surface would be preferable.
Thanks. Enjoy your day.
Yes, take a look and get some samples of the www.BlueTexInsulation.com products. They are mostly use for metal buildings but we have had several customer install in these type applications. Send us an email with your specific questions/applications.
I can understand fastening barrier to bottom of rafters, giving you have good ridge vents and clear air flow from soffit, however I am concerned about a barrier overtop of attic because of moisture buld up in ceiling insulation
No worries. The SuperPerf www.AtticFoil.com has tiny holes PUNCHED in the foil. It will not trap moisture because of the high permeability. It's specifically made to lay over attic insulation. We have not had a single instance with a moisture issue under the SuperPerf product.
What if you did top and bottom?
Use an extendable painters pole
What if the radiant 48 inch barrier, I put between the rafter "V", overlaps the barrier lying flat on top of the insulation on both sides by 12 inches spanning a 2 foot gapping between rafters forming the "V" where it would take a lot of trimming to get it to lie flat, but where it overlaps it is above the point it overlaps it is above the barrier below by 12 inches. In other words looking from above you can not see exposed insulation, but from the side the 48 inch piece is about 12 inches above the flat lying pieces allowing much air movement between the overlays.
Please send us an email with a drawing. I cannot clearly understand/visualize what you are asking. atticfoil.com/index.php/contact-us/
Can this be used on top of r-19 fiber glass insulastion on the fiber glass side for in joint radiant heating?
Yes it will work. Take a look here for radiant heating info: www.atticfoil.com/index.php/applications/radiant-heat-flooring-over-non-conditioned-spaces/
Hey, I'm just south of Asheville, NC on the boarder with SC. We are considered a Mixed-Humid climate. Is this type of installation still suitable for that?
Definitely! You may also want to consider the SuperPerf AtticFoil too. atticfoil.com/index.php/products/45-wide-perforated-double-sided-radiant-barrier-foil-superperf/
I live in New jersey. Where in the attic will place your attic foil? Under the roofing or just over the attic foam insulation? Thanks for your response.
Take a look here: atticfoil.com/index.php/installation/best-install-method/ Generally, in your area the best overall method is over the insulation. Definitely would use the SuperPerf product. atticfoil.com/index.php/products/45-wide-perforated-double-sided-radiant-barrier-foil-superperf
If my attic has both cold ducts and return duct within it, where should I place the foil sheets for more better results?
It depends. If you are in the South and Summer cooling is your primary expenses, then stapling up is usually best. If you are in a mixed or cold climate area, then laying out will usually provide the best overall results. More info here: atticfoil.com/index.php/installation/best-install-method/
Can I use this foil to wrap my AC unit that is in a garage in Florida. There is a lot of condensation on it because of a hot garage. I was thinking if I wrap that AC unit with you foil, then that AC unit is going to stop heaving condensation on it's outside walls. Please advise. Thank you.
It depends. If you have condensation on the ductwork, it e means warm-moist air is coming in contact with a surface below the dew point. Foil may or may not help. You are probably better off making sure the insulation on the ductwork is complete with no "bald" spots at connections etc. www.AtticFoil.com
I have a low pitch roof....live in the south...prolly a dumb idea but could I lay on top of the insulation on the low side of the strong back and to rafter staple in the higher part....sounds like a easier install to me but also seems not as efficient of keeping it as one or the other.
Yes, one option is to staple www.AtticFoil.com to bottom of rafters where you have room and let the end piece in low pitch area just lay over insulation. Use a PVC pipe or stick to push it back.
I need to install a new roof. Can I put AtticFoil on the roof deck and the put the shingles on top?
NO, You must have an airspace on at least one side of the foil. This video explains it: th-cam.com/video/aU4q6RKaOQQ/w-d-xo.html atticfoil.com/index.php/applications/under-metal-tile-roofs/
I've been doing research but still have a couple questions
When to you cover attic decking over covering insulation
Also what about summer when air conditioned air escapes into attic, and cold air mixes with the hot air at the barrier? Does it condensate
I asked too soon, the end of video answered condensation concerns
Hello, Why is it primarily for cold or mixed climates. I tried this method in Ca. Noticing my house holding I more heat. Should I install on rafters instead? Thanks for your time.
Heat ONLY goes one way. Sometimes it's coming in and sometimes it's leaving. If you live in an area with really warm days and cool nights the foil can/will slow the heat loss at night (keeping it warmer) Here is an article I wrote about this: www.radiantbarrierguru.com/the-spring-fall-effect-can-radiant-barrier-work-against-you/
Can I cover the cellulose insulation to or is that only meant for the fiber glass as presented in the video?
Celulose is Ok.
We only sell through our website: www.AtticFoil.com
I have had radiant barrier that I installed 19 years ago on my attic floor. It works great but I think the insulation under it needed to be added. can I add new insulation on top of the barrier I have now and then put new barrier on top of the new insulation? I don't want to have to remove the old if I not needed
@@glennsmith6380 No, you do not want to put insulation on top of the radiant barrier. This will most likely create a vapor barrier in the wrong place. If you want to add more insulation, you will need to take up the radiant barrier, add insulation then either reuse the radiant barrier or replace it: atticfoil.com/index.php/products/48-wide-double-sided-atticfoil-radiant-barrier-foil-perforated/
I have been telling my son about your attic foil insulation barrier. He lives in Houston, TX. His roof has the foil on the bottom side of the OSB, The attic still seems to be hot and humid (April). Would it benefit the house to staple foil to the trusses? If yes
+Randy Lavine The humidity is more about attic ventilation (Plus he lives in Houston). Will AtticFoil help? Radiant barrier decking (which he has now) reduces overall heat flow by about 30% AtticFoil when applied to the bottom of the rafters will reduce heat flow by 50% alone acorrding to the full scale test done by the Department Of Energy - See testing results here: www.atticfoil.com/index.php/technical-info/dept-of-energy-study-results/ Yes, he can do both. We have had many customers add AtticFoil below their radiant barrier decking resulting in the attic being really close to ambient temperature. It's hard to quantify the energy savings but the attic will definitely be cooler. IF the attic is NOT much cooler (measure the AIR temperature below the AtticFoil), this means that the attic ventilation is really bad. Basically the air is getting "stuck" similar to a clogged drain and can't get out or come in. Take a look at this video for attic ventilation suggestions: th-cam.com/video/NUvgeP7--0Q/w-d-xo.html
? Is this foil heavy enough, so it doesn't move by blowing wind or attic solar fans?.
Should not have an issue. Normally fans or wind will not be strong enough to move foil. Or, you can always staple in a few spots to anchor it.
This might be a dumb question: I have about 4” deep of cellulose insulation. I was wondering if I can put the barrier over the cellulose, and put some batt insulation over sone of the barrier?
No, you do NOT want to "sandwich" the www.AtticFoil.com between your cellulose and the new batts. The correct way would be to add the batts and then put the AtticFoil on TOP of the batts. Foil needs to face an airspace. And you want it to be the first thing the radiant heat from the roofs hits to reflect 97%.
is there any interference with cellphone signal around the house after the barrier is install in the attic?
Maybe, It really depends if your signal is already weak. Here is the page on Radiant Barriers and Cell Phones: www.atticfoil.com/index.php/knowledge-zone/knowledge-zone-learn-about-radiant-barrier/myth-or-truth-cell-phones-and-radiant-barrier/
I surely hope so! That way the kids might just put the phone down! (sigh)
Can I use the staple method and laying foil on insulation. I live in texas
I'm not sure if you are asking if you can do BOTH methods or can staple it down over the insulation. For the Over Insulation method you do NOT want to staple it down. You should have at least several inches of insulation above the wood ceiling joists which would prevent you from stapling down to them. If you are asking if you can do BOTH methods, yes you can do both. The biggest impact in Texas will be the staple up method especially if you have ductwork in the attic. If you add the over-insulation method with the staple up method, then the over-insulation method will primarily help to reduce Winter heat loss. atticfoil.com/index.php/installation/best-install-method/
Attic insulation is not a thing in my area. I've been watching your videos and I've heard that I need the radiant barrier above an insulation. What if I can't get the insulation? Is it ok if I put it right on the floor(which is actually the ceiling for the room below)? provided there will still be a gap between the floor/ceiling and the sheets...
Using www.AtticFoil.com alone is better than nothing at all. Where are you that insulation is not available?
How do you detach the foil from the long pole when positioning it? Shaking it?
A quick pull back and it will come off.
Hale White I found using a 3” roofing nail taped to your stick works best. Also, when you poke the nail through the RB foil, wiggle it around making the hole a bit larger than the size of the nail so it slides easily on or off. Then make sure your hole is several inches away from the front edge to fold back the foil toward you to help prevent the nail from coming out of the hole prematurely. Keep a constant forward motion and slight tension on the foil when pushing back to the edge. Usually the weight of the foil dragging over the insulation is enough to keep the foil on the nail until your ready to release. I’m not a professional, but this worked for me.
I have been installing this in a Florida home. I was wondering if installing the attic foil stapled to the trusses and also on top of the insulation will help to reduce the radiant heat trasfered to the insulation or will just trap heat in a loop there?
For Florida not much additional benefit in the Winter to lay over insulation. If you were more in a "mixed" climate are then yes www.AtticFoil.com for both staple up and over insulation would work better.
@@AtticFoil could you make a video explaining why it won't be too beneficial in Hot climates like Florida? I've seen a lot of videos looking for that explanation but I only see you saying that it's better for mix climates without any demostration or technical information to support it. I would really appreciate it. Thanks
@@fernandogoza7893 First, check out this page: atticfoil.com/index.php/installation/best-install-method/ The big question is if you have ductwork in the attic? If yes, then staple up in hot areas keeps the ductwork in a less hostile environment. If NO ductwork in attic, then yes, you are correct, laying directly over the insulation works great even in hot areas. And, there is a video on the page.
I have foam spray insulation in my attic currently. Would stapling a foil barrier to the top of the attic be any benefit or detriment to the foam effectiveness? The north Texas heat is out pacing the central air with some rooms reaching 80 degrees with the thermostat on 74.
If you have foam on the floor of your attic and it's ventilated, then installing www.AtticFoil.com on the bottom of the roof will work great just like any other attic application. If you have a non-vented / foam closed attic then there would not be much benefit putting it to the "inside" of the foam.
How does this radiant barrier compare with R11 fiberglass insulation in terms of cost and effectiveness?
It's hard to compare. Think of the R-11 as an ice chest. And the www.AtticFoil.com as an umbrella over the ice chest on the sunny beach. The AtticFoil reflects radiant heat and lowers the surface temperature of the ice chest (or attic insulation) making it more effective.
Does laying it across insulation will it not heat the shingles
Short answer is no. Roof temperature info here: atticfoil.com/index.php/knowledge-zone/knowledge-zone-learn-about-radiant-barrier/myth-or-truth-radiant-barrier-damages-roof-shingles/
I'd like to install this on the outside of my attic knee wall for an added barrier for the cold in my bonus room. Could this work for my needs?
Yes, installing www.AtticFoil.com in this way works great for radiant heat. I like to combine 1/2" or 3/4" foam board with the foil. Basically put foam board on the attic side of the wall like sheetrock. This makes a huge difference in walls that have the insulation exposed. Also, check the "chaseway" or space below the second floor to make sure hot/cold attic air is not getting between the upstairs room and ceiling of the first floor. Ed.
@@AtticFoil Thanks!
I installed this product on the attic floor over the cellulose insulation I think 3 years ago. I live in the LA, California metro area and this year has been really hot. It is really difficult to tell if it is working properly. The 1st year I would say that it did work right but still hard to tell. I say that because I have 2 window air conditioners and I only put one in last year but this year I had to put both in. My attic is a little less than 1000 sq. ft. and has 2 gable vent fans.
I am probably going to remove it from the floor and put it on the attic ceiling. OR should I leave it on the floor and add it to the ceiling? And don't say yes so that I buy more of it, I still have half of a roll.
If you do not have any AC ductwork in your attic there should not be a big advantage to stapling it up.
I want to lay this over my insulation in my attic before putting down a 3/4" floor...advice?
+rnelson07 You could do this, but you should install some 1/2" or 3/4" furring strips before putting down the deck. This will create the required airspace between the deck and the foil assuming the insulation is touching the foil on the bottom. You CANNOT "sandwich" the foil between the insulation and the floor.
@@AtticFoil is it better to put a 3/4" floor above the insulation, then put the foil over the flooring?
@@75thshootist If you are trying to reflect heat, then yes putting on top of the 3/4" floor will work great.
I was wondering if I can do both? Radiant barrier on the ceiling and sitting on the insulation?
We have a video on that. Does this help? th-cam.com/video/iGXQOmdKBVI/w-d-xo.htmlfeature=shared
@@AtticFoil thank you so much for your help
Where can I buy Attic foil in Canada?
We can ship to Canada. www.AtticFoil.com or we can ship it to a location like a Walgreens on the US side and you can pick it up to avoid the taxes/duties etc.
Where to buy, what brand please
www.AtticFoil.com SuperPerf for over insulation.
What is the % of heat rejection or any scientific statistics? Based on that Is it really worth it?
The www.AtticFoil.com foil itself reflects 97% of radiant heat. It's tough to exactly quantify this. In hot sunny places it's more effective than cold cloudy areas. Think of the foil as making a "cloudy" day for your roof. Would this help in your area? If so, then it's worth it. Radiant heat is why sometimes we have to run our AC on a 65º SUNNY day but not on an 85º CLOUDY day.
@@AtticFoil Do we need to insulate the attic with blown in insulation? If so, do they reduce the R rating for insulation as they already have radiant panels?
Yes, if you are heating/cooling then you will also need traditional insulation. More info here: atticfoil.com/index.php/how-radiant-barrier-works-in-attics/ Check with your local building office as far as required r-values. I know in some places the addition of www.AtticFoil.com can be used as a "credit" towards r-value.
The only problem I see with this method is that it will make it very difficult to work in the attic. It will be very hard to find a place to step and will most likely pull the foil out of place as the insulation compresses. Also finding the wiring isn't going to be any fun either.
Working in attics is never fun or easy.