Spray Foam Insulation vs. Fiberglass
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- เผยแพร่เมื่อ 22 ม.ค. 2014
- www.drenergysaver.com | 1-866-607-0191
For many decades, the material of choice to insulate homes has been fiberglass. Blown fiberglass is used for the attic whereas fiberglass batts are used for wall cavities, ceilings, and pretty much everything else. Today, it is still a very popular insulation material, and is still used in new construction -- it is inexpensive and most builders and insulation contractors are used to it.
Yet, there are several insulation materials available today that far outperform fiberglass insulation in many levels, and in the #61 episode of On the Job Larry Janesky, owner and founder of Dr. Energy Saver, will show us how spray foam insulation outperforms fiberglass batts when it comes to wall cavity insulation in new construction.
Larry begins by reminding us that modern houses aren't built as rectangles with gabled roofs anymore. Most new homes have architectural features such as cantilevers, multi level areas, enclosures and fixtures that create irregular wall cavities and many challenges in terms of insulation.
The house showcased in this video is one example of this type of modern construction.
Fiberglass has an R-Value of 3 per inch while spray foam has a R- Value of 7 per inch. R-Value is a measure of resistance to heat flow, and a lower R-Value per inch means that you need a thicker layer of fiberglass than you would of spray foam to insulate the same area and achieve the same ideal R-Value.
The problem is that the fiberglass R-Value is rated only when the material is fully fluffed, not when it is compressed and touching all the surfaces in the cavity, without edge gaps. A small 4% edge gap will cause a 30% decrease in the R-Value of fiberglass insulation.
Add to that the fact that fiberglass has no air sealing capabilities, and air flows right through the material and you will begin to understand how it can be easily outperformed by other insulation materials, especially spray foam insulation.
Larry walks us through the many architectural and framing features of the building that would create several opportunities for insulation failure if fiberglass were the chosen material -- and he shows us just how easily closed spray foam can be applied to the exact same problem areas. Spray foam insulation expands and effectively fills even the smallest spaces and gaps, leaving no holes in the insulation blanket and air seals the walls as well!
At Dr. Energy Saver, we are always looking for ways to make homes more comfortable and reduce the cost of homeownership by improving energy performance. If you would like to make your home more comfortable, visit our website to locate a dealer in your area.
Watch our other On the Job Videos for more information on energy saving home improvements and subscribe to our TH-cam Channel to get the latest updates! - แนวปฏิบัติและการใช้ชีวิต
I think combining air sealing with pink batts and cellulose in spots where needed is probably the best while keeping future home improvement projects in mind
In a vaulted ceiling you DO NOT want fiberglass batts touching all four surrounding wood surfaces in most northern climates. You need airflow (1" minimum) above the insulation layer to remove vapor that would otherwise condense and rot wood framing. One problem with spray foam is that it actually makes construction "too tight". Wood framing needs to breathe. Water vapor does pour through construction assemblies (particularly from bathrooms toward a cold exterior) and foam is impermeable - meaning that the wood studs are the route. There are some reported problems with spray foam involving chemical sensitivity / smell for some people.
Open Cell foam is a vapor retarder, not a vapor barrier. The reason foam outperforms fiber is it stops convection around the assemblies. That is GOOD, because outside air coming in brings dirt, vapor, insects, etc.
The ventilation is still necessary. Without the proper airflow underneath the decking, the shingles will cook and deteriorate prematurely. Installing baffles prior to spraying the foam is best in order to allow proper airflow. You're still attaining the same R-value by spraying over the baffle and you're still sealing the conditioned air space from the exterior.
Ken Paulsen that's what Styrofoam baffles are for
What about using spaceloft?
Outdated building practices,...you absolutely do not want the house to breath like that...…..these spray foamed houses have been around long enough now that some are getting remodeled, the spray foamed wood is in perfect shape as is the wall.
2 things cause condensation build up like that...….poor vapor barriers and poor insulation, so the old houses needed to breath, new houses do not. New houses also have proper humidity and ERV ventilation control so those issues no longer exist.
You need a surface and humid air and a temp variance to form condensation, which does not exist when you spray foam the interior roof surface and seal the attic...…...bird block vents allow moist air in and are not used now and when closed cell foam is spray against the underside of the roof there is no moist air to come in contact with the surface. Also most attics are also conditioned just like the house so it does not draw humid house air to it thru BTU transfer as hot goes to cold, both spaces are the same temp.
While a old outdated house might need to breath, it is horrible for efficiency and the last thing you would ever want to build into a new house...….you do not want the house to breath because you lose money in heating and cooling, you want it very resistant to that to lower heating and cooling costs. There is no reason for a properly remodeled old house or new house to breath.,.....it is simply out dated building technics and information.
I am happy with my foam job. Built in 2009. Nice and warm and easy to heat. I put almost all of my plumbing into interior walls except for maybe 15ft of an ABS sewer pipe and a 1" water line, I have no reason to expect I will need to see them again. I have never had anyone smell anything like a chemical smell in my house, I did use a vapor barrier on the inside, call me old fashioned, but that is easy to do on a new build than after the interior finish is done.
Many have commented on the air space in the roof - that is because we are doing an unvented roof here. If we made a vented assembly and used fiberglass batts, the batts are subject to wind-washing and the R value is lowered. As I stated in the video, R values are in a closed cavity. A vented rafter bay is not a closed cavity.
Thanks Larry, makes sense. Would love to see more newer videos from you, you really have a great teaching style
An alternative to spray foam people might want to consider is stone wool insulation like Roxul that is very stiff and holds it's shape better than fiberglass, up to 90 percent recycled wool fiber, also it is less flammable than fiberglass. Rigid foam board is less toxic than spray foam and still is a foam insulation. It can be cut to fit between studs.
Sir, being in the trades myself, I wish you would have included some of the drawbacks of spray foam vs. fiberglass. Just to be fair, could you explain residual off gassing and explain the effects of removing spray foam when installed improperly? Maybe mention what to look for when the insulation job is complete. Thank You.
Foam is made many different ways, none of the current stuff off gasses like you mention,...…...drywall, carpet and many other materials also off gas,.....it was a problem with many materials, but as always off gassing is not a current concern, it is outdated info. Even the flammability concerns have been mitigated now to a reasonable level.
Mix it wrong and these guys have destroyed your home.
Multiple horror stories of spray foam applied incorrectly. The fact that so much of the process relies on the person applying it, is FUCKING scary.
I'll tuck fiber glass or blow cellulose before I have someone spray in this nightmare. It's good to have a house that breathes a bit. Too sealed and your indoor air becomes worse than the outdoor air.
What kind of concept are you promoting?
Is it safe?
lol shows your knowledge on the subject. If mixed wrong it can emit hazardous fumes years after installation. also anyone with high school chemistry will tell you that chemicals react differently in different environments "temp, humidity, ect" sooo instead of being a dumbass read up a bit before you comment
Destroyed your House, health and your family.
Bob A Booey you are 100% correct you will smell a fishy kind of smell than you'll get a head ack and then you can brake out in rashes and have joint pain so just stick with the fiber glass rather be safe and ok heated than warm with poison in the air so stick to the fiber glass
I took a course in alternate energy back in the 70's. One thing I remember that has bothered me to this day is what happens to the R value of foams (installed properly) over the years. In other words, how much do they outgas - and "poof" there goes your R value?
Can you direct me to reliable tests that have been done on the long-term effects of R value for the various types of foams?
can you talk about the risk and the chemical inside spray foam that potentially can get your company in trouble thru law suite if any?
your videos are all great. would you mind if I post one or two on my spray foam websight?
What a great sales pitch . properly installed glass has been around for years with no stink . new Zealand can be cold and batts have been great . What chemicals Are in fish foam
No stink, but it's not effective. Air just leaks in easily and does nothing for hot climates.
It seems most people commenting here have no understanding of insulation or foam insulation for that matter...
If mixed or sprayed wrong especially too thick can cause problems with your health
Why should the insulation touch the roof sheathing? It should have either foam or plastic roof vents up to the vented ridge if it's going to be insulated.
Most of these people being negative about spray foam have never even walked into a construction site- they only went to a TH-cam channel and watched a video on the apparent dangers of spray foam! How embarrassing. It's a rare case that the job is done poorly enough where it has to be ripped out. In that regard, never hire anybody without a good reputation, a contractor license, and insurance. Nuff said
Lawrence, Spray foam doesn't form mold, water creates mold. However, spray foam is a great product to use because it blocks air movement (air leaks). It also does a wonderful job by filling in small cracks and holes to stop those air leaks, and bugs from getting into your house.
isn't there suppose to be an open (1.5") vent space between the insulation and roof deck? So what is the problem? Is there no vent from eaves to ridge?
I was gonna bring up the same thing.
You said your don't fill the cavity with foam, why not? Is more in the cavity more insulation value?Also does your building code not require poly on the warm side of the wall and electrical box boots? This will reduce air movement. Don't forget abut sealing the wall to the floor too.
If the incorrect ratio is mixed during the install, then you the homeowner are at a significant risk. (out-gassing of hazardous organics will mess your health up) Make sure the company has a written policy on removing poorly installed spray foam insulation.
Stone wool insulation is fireproof, cuts with a bread knife and is a handy alternative to either fibreglass or foam
I had my new home spray foamed in 2006 best decision I have made but you want to have plumbing and electrical where you want it electric bill is easy on pocket book also makes home more structured solid went thru A couple hurricanes in Houston area
The spray foam takes roughly 1-3 months before it cures properly. So I wouldn't say minor inconvenience more like a near 3 month inconvenience. But if you are using it in a garage or when building a new home that's months away from finishing I wouldn't see an issue
Not to mention what environmental thermal changes do to it.
I've dug out countless rotten, cracked cavities due to spray foam being installed during season changes.
Before getting spray foam insulation watch spray foam insulation disasters, it is eye opening to the potential hazards, and he even says in this vid that you cannot be home during installation due to toxic chemicals associated with this stuff
Why would you wanna be home when your there doing this haha
Pretty sure thats not the point. The point is that polyurethane gases are so fucking toxic and cause cancer. Idk why you would want all your walls and roof be full of that?
@@eikeksimimea1071 What?! You are only advised to not be home while the foam is curing for the first 24 hours or so. It's like telling a homeowner that they're advised not to be in the house while their concrete floors are curing for a day or two. Not that hard to understand.
If you use spray foam, what about moisture, vapor barrier (on metal or wood material) and or bugs that can still get in??
This video is very informative. You can reduce your home's heating and cooling costs through proper insulation and air sealing techniques. These techniques will also make your home more comfortable.
But what they don't tell you is that spray foam can cause a lot of problems because if you do not do this without the right conditions it can cause a chemical reaction and cause a grocery list of chemicals such as toluene witch can cause blindness and it is also in gas something else they don't tell you is that it is mixed at your home not at the factory but at your house and a lot of people have had a really hard time to live in their homes because of spray foam one case involves a kid who was sleeping at the time and they sprayed it in his bedroom with him in it also it is believed that you can get cancer of all things don't believe me? Well it can release a agent which I forgot the name of can cause cancer also a lot of businesses don't even know how to do the job correctly they usually sparky a whole lot of it at one time but the correct way to do it is that to spray little amounts at a time to make thin layers to build the insulation so don't buy this product unless you want to purposely abandon your home then DONT BUY THIS PRODUCT DONT BELIVE THEIR LIES!!!!!!!
Fiber glass manufacturers offer a wide variety of insulation products, including fiber glass loose-fill that can easily and neatly fill all the voids and gaps featured in this TH-cam video.
Angus Crane and its goin to be a lost cause just like asbestos
k vogt comparing fiber to asbestos -___- Due to the occasional toxic nature of poorly done foam jobs, I'd say you're comparing the wrong two.
Heat recovery venting will allow your home to breathe even in winter as
the incoming cold air is heated, mostly back to house temp by the
outgoing air via a radiator type exchange. Can also be run in the
summer. Can be run on a timer system with a full time override switch
when cooking or some other gnarly vapor is in the air. Those vents come with a filter or you can add one that is better than factory so only dust free air comes into the home. A large HEPA sounds good.
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Also, spray or any other kind of insulation should never be applied directly to roof sheathing as it will trap summer heat causing the shingles to curl. Big boo boo, Larry ! Are you insured against a spray job gone toxic that guarantees full remediation including building parts replacement ? I saw the vid of the Ontario couple living in a motor home for many months while getting their toxic spray job corrected. The same video showed that problem in Florida.
I just read a horror story about a family that had their home spray foamed and then could not live in their home because it was poisonous to them after that. They had to have the roof removed and they had to pay for it themselves.
Spray foam is awesome. I don't know if I would want it combined with wood in Florida, but in Fairbanks, Alaska - Spray Foam!!!!
With proper air sealing and installation, the same results can be found with fiberglass bats and blown cellulose for a much cheaper price, and you can do the work your self. My gas and electric bills are only 90 dollars a month for a 975 square foot ranch with r-13 fiberglass bats in walls and cellulose in the attic and I live in the frigid Midwest.
So I live in Fla. and have an existing slab home. What can I do to save energy dollars.
Will it work for me?
what do you do with the encapsulated wires if you ever needed to do work on those?
If installed correctly fiberglass is very efficient, the problem is you get unskilled installers that don't understand the concept of heat flow. There's a high turnover in the insulation industry. Lets face it there isn't exactly a line of people willing to do this kind of work
You make an excellent point. It is extremely easy to cut corners in fiberglass installs leaving gaps, air pockets, missed corners, crushing it, not properly cutting and or tucking around wires etc, etc, etc. Just like anything else installation is super important to maintaining it's R value
@@theripper121 thanks ripper 👍
I have a basement that’s going to be on an independent HVAC system. Wood floors upstairs. How is foam at reducing the noise from a square dance (kids) being held upstairs?
Came here wondering how 3" of open cell (R-10.5?) would be better than an R-15 fiberglass batt. I think you answered my question. Thank you.
spray foam is great. Dr. Energy saver isn't even that bad of a franchise. I don't understand the complaints of the home being too tight...yea, that's what blower door tests are for and they even make machines that overcome the lack of infiltration and exfiltration... ERV'S and HRV'S. yea, if you do something half assed it will turn out poorly..... but that's true with all things. Spray foam is great stuff.
the new stuff is safe I use it day in day out use to hang glass and the Fome is a lot better expeslly by the ocean or bay
Dupont makes a spray foam insulation FROTH-PAK. You can purchase it at menards for $620.00 it will cover 680 square feet at 1 inch thick. Based of this information. Is it cheaper to higher it done since they purchase in bulk and may be cheaper?
How does one seal the foam to prevent out-gassing of toluene, MEK, and formaldehyde?
what about the wires if ONE goes bad you are forced the remove all the foam arount it then respray it and if you remove the spray instalation it makes a huge mess but with fiberglass you can just pull it out and no mess
Hi Larry.... Larry, if i asked you to spray a solid 6 inches of insulation between my catherdrall roof trusses directly onto the underside of the roof aspenite and also seal the eave openings,,, all airtight........ would that work with you? And is it true that condensation cannot occur when there is no air at all ? Thanks !!
another great video sir
yet I also wonder why you don't respond to your videos!
"It's so much better..." what if the wiring needs maint or you're doing a project and need to run wires, would it be easier to pull fiberglass insulation out or have to drill and dig through spray foam, you can put bad the fiberglass while the spray foam needs to be reapplied, not to mention spray foam is like a game of Russian roulette whether its sprayed right or not.
If they are professional, they would leave space for wiring. Fiberglass is does nothing in terms of insulation when air just leaks from it. Mind as well put nothing LOL
Good debate, questions, and feed back guys and its good to be cautious and expect the best result with the smartest design so after review I suggest the industry use a multi layer approach that will maximize the safety, insulation, thermal, and water barrior application with a well understood and utilized ventilation system and requirements. personal note: I would check into a tyvex wrap method for rafters that are stapled down and then these applications put down. I also agree the fires in homes would cause a toxic release of these chemicals so I would like to see a better product developed in the event of, during, and after fires, if it will remain safe or be extremely toxic. cool that there is a better sealing product though.
I have a 110-year-old house in northern New Jersey. What insulation is best recommended for the rim joists in the basement ?
Spray foam because spray foam is also an air barrier which will prevent inside, warm air from condensing on the rim board behind the insulation. You can also do foam boards and canned spray foam around the edges, but that's very labor intensive.
so what are you suppose to do if you need to do electrical work after putting in the spray foam?
Simple you dig a trench in the foam. Done it many times.
how do you replace the wires after you foam it?
Hopefully they are smart enough and don't spray in places where wires goes into. Do these on certain walls and ceiling only
Every time I do something around the house my wife can smell it, if I used any chemicals like bug spray or wood protection. She would definitely smell this, forever. I would like to use this in the crawl space to seal out the bugs but I have a feeling she would smell it.
John S no smell after about an hour.
Nice video and alot of nice info but with that barn roof if you insulate it with batts and they touch the roof sheathing it will condensate underneath therefore rotting the sheathing. It will always be damp and never dry.
I have repaired damage from this and its a danger to anyone that goes on the roof . Sprayfoam all the way for sure in that location, and it won't let the roof condensate because its like part of the wood. No frost or water droplets will form on the foam.
So are you saying that you do not need an air space next to the roof sheeting if it is sprayed right to the top?
@@SternDrive yes. The sprayfoam eliminates that dampness or frost on the wood.
Where I live its colder wintertime and the attic usually builds frost on the wood if not insulated good. The foam stops it from happening.
Yup, I just found out that my 12 year old roof is fucked from this stuff
Why did they not vent your roof? This install is terrible.
How is this stuff for older mobile homes?
I would like to see how his home is insulat!!!
What if any of those wires need to be replaced?
Does spray foam have to be sealed?
That foam would make that house rock solid during a hurricane by glueing it all together
The spray foam as of eleven years ago is made of environmentaly friendly material. Any fumes are gone within 24 hours. I am not a sales man and could care less what you buy. I do operate a spray foam rig and breath closed cell five days a week. Healthy as a bull.
Just a note:
Everyone, remember this. Insulating a house is really not just a question of R-value. A house is a whole system anything you do as an impact on something else in the system. Therefore, it's better to talk about enhancing the [house] system in an heat transfer problem.
What to have in mind when thinking about upgrading your system?
- Heat transfers in three ways: convection, radiation, conduction. R-value deal with conduction, but are meaningless if air flows freely outside your system. A good system would prevent air from flowing freely outside and inside the walls.. that way convection would be prevented and heat would have no choice to move throught the high R-value materials (be careful about thermal bridges also).
- Air, comfort and health are affected by: humidity and "what's in the air". If you have a perfectly sealed house, your simple respiration is going to consume the oxygen in the air and you'll die. If you want to live healthy inside the system there as to be an air renewal (controled or uncontroled). Opening a window will work, but then why have you prevented to air from moving freely in the first place? There are air-exchanger systems that permits to renew the air while promoting heat exchange between old air and new air. Bad humidity level can cause a variety of problems (bacterias, viruses, respiratory infections, allergies) to the people insible the system as well as the system itself throught condensation. Sometimes, comfort is not acheived even if air temperature inside the system is high, because of thermal bridges (cold feet).
tl:dr : it's complicated
Just remember this when listening to a seller who simplifies too much what he's selling.
*79 dead: The Foam Insulation blaze that ripped through the Grenfell Tower, London, causing multiple deaths (79 confirmed / 120+ estimated) has prompted widespread commentary on the Foam Insulation Industry. A Criminal investigation into the Foam Installation Contractors concerned is now taking place. It appears there will be a criminal prosecutions for corporate manslaughter for those concerned whose acts or unsafe products committed the offence. In the case of the Grenfell Tower fire, the most likely prosecution candidates would be the building’s management company, and the insulation contractors and sub-contractors involved in the property refurbishment in which apparently highly flammable foam materials were fitted as insulation.*
How does this work with a pole barn?
hey larry, , , why don't you mention that by spray foam insulation between the rafters (all 4 sides)as you state , will most certainly Void the warentee on the roofing shingles, there is a reason for soffit vents ! !
Ya, I also have concerns about the lack of venting here. What's up with that?
how a repair man can access any wire, pipe electrical outlet after this foam installation?..how a leak can be detected before is to late?
l like roxul mineral wool. It doesn’t hold water, can be damp sprayed ,batted, or loose filled, and is by far the best fire retardant, is mold resistant, and is a noise dampener. It’s also very safe. It’ the insulation of choice for new Scandinavian home builds and is a lot cheaper. The video mentions nothing about thermal bridging through the studs where much of your heat is lost.
Wow.
1. The vaulted ceiling needs to have foam baffles stapled to the roof with the insulation under it to PREVENT the insulation from filling in completely for airflow- attics need to breath during winter or the roof will have ice damming, that will ruin the roof. The roof is supposed to be the same temperature as the attic everywhere that has the potential for snow.
2. Proper fiberglass insulation installation where wires are in the way- CUT the insulation to where the wire runs, then duct tape the vapor barrier on the insulation over the cut.
3. Proper fiberglass insulation would have no "gaps" like you are referring to in your video.
4. Fiberglass is better because now we are seeing thousands of home owners are having problems with these spray foams because the heat is now creating chemical reactions that are getting people sick.
5. The conditions have to be perfect to apply the foam or it will not cure and #4 happens. You can apply fiberglass anytime without having the risk of chemical reactions or getting sick.
6. All the "crazy cavities", "triangular" cavities, "skinny" cavities, etc you point out............ Is it rocket science to cut a piece of fiberglass insulation in the same shape as the odd cavities you are pointing out? Would it really be IMPOSSIBLE to insulate those odd cavities without this product you are trying to market?
7. @6:01 Yeah, just cut a piece of fiberglass insulation for the roof and a piece for the wall and make cuts for the wires and then duct tape the vapor barriers on the cuts. I know its like rocket science!!!!!!!!!!!!!!
8. @6:42 Please, find a different career! You have no idea what you are talking about. That insulation is supposed to be "faced up" flush with the rafters with a foam baffle stapled to the roof for proper attic airflow. OR, you know what you are doing and are creating future business because you know that will cause the roof to fail. Roofs need airflow so they are the same temperature as the attic/outside otherwise the conditioned air will cause the roof to be warmer and melt the snow causing it to refreeze and dam on the roof, which will leak and rot and eventually completely fail.
9. @7:10 I sure hope that house is in the south where it doesn't snow because if not you are going to cause the person who owns that structure to lose that roof in a few years if that's in a climate that has snow. Even if the attic is going to be conditioned, you still need baffles ran to the soffit all along each rafter to keep the roof the same temperature as the outside. Hope who ever's house that is saved this video for the eventual lawsuit of negligence.
10. @7:25 if fiberglass is installed properly, which you are not showing proper installation in this part of the video, your claims are false.
11. @7:45 bull.
You are correct on many things here...except...you do NOT get ice damming from too much insulation. You get ice damming from a hot attic that causes snow on the roof to melt and run down to the cold eve and freeze. Just thought I'd correct that myth.
Is spray foam toxic? And if so for how long?
I think im in love 😁....
With energy saving 😏
Heat escaping - through : TPP (Tiny Pin Pricks) - *R* bad - *G* generous insulation *IS* - very *G* - for good : don't lose your head *R > G*
i would rather have fiber glass than spray fome because if you watch the video's of the people spraying your house wrong it can affect you big time
If you get someone who knows what they are doing there is no risk.
IF
Assuming the one doing the application stands behind the product AND has enough confidence in the product to be willing to REMOVE ALL OF IT from the building if something was done wrong and the product off-gasses in the future making the home unlivable for the home-owner...
Since you seem to be acting as a spray foam applicator, based on your apparent Spray-Foam Biased comments...If future off-gassing happens making it impossible for home-owner to live in he building AFTER you have applied the Spray Foam to the building, will your company stand behind the application process enough to remove the problem causing spray foam product your company had sprayed into the home, AT NO COST to the customer who by that stage in the game CORRECTLY feels he was SCREWED OVER or even ROBBED by the applicator of the product that is now making the residents sick???
And by then, they are probably already dealing with breathing problems, asthma skin rashes, joint inflammation, and what not! Better not even start, because even if they come and remove all of it for free, your health and your family member's health is already compromised!
Book Worm
Very good point, Im from England and wanting to have a nice cabin built in the US to live in.
I dont know anything about Installation, but I could see the Spray Foams causing loads of problems, and if you did have a load of problems with it, chances are the Company who installed it would give you the Major League Brush Off once they have your money!
Is their Any heath issues associated with Fiberglass Installation??
try getting back at a damaged cable once these guys have sealed the cavities
I was thinking the exact same thing
Typical sales pitch.
Yeah spay foam doesen't breath so it effects you air guality
Fine. Keep using man-made Asbestos, formally known as Glass Fibers in a pile.
scanjett
yea. that's why they make ERV's....
I don't understand your complaint.
@@scanjett Outdated information,,,,,,,houses built today do not breath, which is simplified as air exchanges or in the simplest terms air leaks....not something you want for efficient houses, all modern houses are sealed and use a ERV, which makes the air quality far better than any house no matter how much it leaked air.
I was quoted 1200 for a 12x16 room of 11/2 inch spray foam is that a good price it's a barn type room 11 feet from floor to top 12x16 total floor ..
how much are the electrical cables derated due to contact with that insulation?
Not at all they are covered in insulation...
I can tell by the truck in the background in 2 seconds how this video will end.
Good luck rewiring that home....
You can cut it with a steak knife.
stripymccatpuss is not hard to cut at all.
bet he ment they should have used pipes and pulled the wires inside them. thats the proper way to do wires, pure wires like that is just stupid. and even dumber to sprayfoam it without suggesting to the costumer to fix the cables.
Christopher Haugan fr
Rewire the entire ceiling using electrical pipes before installing spray foam, that alone would be costly. When you see class actions in the courts it tells you to stay away from this product,
Been this airtight craze since the 70's then they figured out you need some ventilation to live.
Open a window from time to time! LOL Really?
If you surround electric cable with foam you have to downrate the cable quite a bit because it is now insulated and a higher risk of overheating. Why are they insulating internal walls?
Acoustics. I lived in a house with zero internal wall insulation and the noise leakage was horrendous. I was able to follow a conversation from an adjacent room with closed (and sealed!) doors. But for acoustics you wouldn't need a foam anyway. Just a fairly thin but dense material is enough. Mass is key in sound insulation.
Bunny, if your wires are getting hot, YOU BUNNY, YES YOU, did something horribly wrong. Wires, when installed correctly, do not even get warm, so...don't comment on something you have no knowledge of, and You have none.
Bunny
First most wires are in the outside walls. They probably aren't insulating the interior walls. Also when I put Spray foam in my house I'll put electric plastic corrugated conduit in the walls. Then put a 5 mil plastic vapor barrier over it using acoustic sealant.
Bunny, Also interior walls are often insulated to have sound and heat control in every room. Like a closet, if you insulate closet walls, you slow down the heating, cooling going into an unlivable space. Or let's say a laundry room which makes a tremendous amount of noise, do you want to hear all that ? It all makes perfect sense.
How would a person find out if there's a Dr Energy near them????
How do you get around the idea that spray foam makes home upgrades near impossible?
Yep, make it good and tight and trap all the moister in the walls. A house does need to breath too.
+Yoanimal Yoho Yep, just like people need to breath...maybe if we just poke a bunch of holes in ourselves we can breath better!!! Oh wait, no we have lungs for that, just like there is a little thing called mechanical ventilation for houses, you know, so you can control the air exchanges, as opposed to letting your conditioned air pass through un-sealed walls.
+Yoanimal Yoho Correct what I see now when using regular insulation you do not use plastic on top of the insulation. It traps moisture causing mold, your house does need to breath !!
Billy Smith moisture gets trapped BETWEEN plastic vapor barriers. there is no "between" with foam so moisture doesn't get trapped.
was there a Canadian 60 minutes special or something gay? everyone has the same, incorrect, objections
There is a between. It's called sheathing. Spray foam underneath and waterproof underlayment on top. Moisture from the sheathing is trapped inside.
Yoanimal Yoho, Damn you're stupid. If you have no idea of building techniques or science, then stop commenting please.
One thing for sure with spray foam is thats if its not mix well will transform your house in a toxic nightmare, the spray foam company will refuse to rebuilt your complete roof saying its only minor and normal that all of your family is getting sick since the spray day ..The only place where spray foam is not as bad its in prefab factory build houses where their is a greater control on the toxic bi-effects of foam , for me using spray foam will be only to a minimum in unreachable nooks and use fiberglass everywhere else, out here in canada we all remember the government subvention for using formaldehyde foam who turn out to give cancer where people lost the entire homme something being said safe today can turn to a disease giving poison tomorrow , better go with something from the proven path ...
1badpete999
Good point!
Does it also work for deadening sound vibrations.?
Rich Link closed cell foam helps, but open cell foam is best for sound dealing. the difference is open cell foam isn't a true air barrier. best for interior walls.
Okay,good to know there is a difference.
Thanks.
isn't spray foam quick to catch on fire and spreads it faster?
Consumers should do their own homework on spray foam insulation, especially the potential health impacts and implications that people don't know about until installation is complete and then your only option is to move, what happens in a fire and how quickly toxic fumes fill the space, that foam does crack and doesn't stay tight. People need to evaluate the whole list of benefits and risks. I did my homework and stopped our condominium association's intention to install it and instead went with blown-in cellulose, and rock wool is another good option too.
I had a terrible experience with blow in insulation. Most companies don't get it right and because you can't see to inspect it is a guessing game and the consumer in most cases regret it. I am in the process of renovating another property and I have learned that you need to actually see where you insulate.
If you have time I would cancel that order.
@@benoitrealestate you are completly incorrect in every part of that statement. Thats like saying because 1 lady cut your hair wrong you should never trust anyone to cut your hair. I have a 12x16 shed I use for a grow op. The condition inside meet VPD graph. Usually 80 degress around 70% humidty. Fiberglass insulation was ok but I could acutally see it become heavy because of the humidity and start to sag. My electric for that building was on avg. around $300 and the month before i had spray foam done it was $322 (may). I ripped out the fiberglass and had guys spray foam. The next months bill was $258 (June so was hotter) and I see zero sag or anything from the new insulation. I am even thinking of having them do my main home but just dont have the funds right now.
@@jamesshanley1558 blow in insulation is different than spray foam.
i do not understand why so many dislike why so many ?
becase he has a good point foam is far better and can fill any space propely
even the tinyest places can be filled with foam so is far more better in my opinia
I agree with the fact its better insulator, but thats about it. You've probably never worked with 2 part closed cell foam but if fucking reeks of chemicals. If the installer doesn't mix it right the chemicals never fully cure and will smell forever. Now you have a house your living in constantly getting high from chemicals. Now for sake of argument we say its installed correctly and there is no off gassing of the foam and you just bought a starter house with foam. If you ever want to remodel the bathrooms, kitchen, and add lighting and outlets ect will be a nightmare and shit ton more work because of the spray foam. Where those cables and pipes are foamed in is going to be a nightmare to access and move or add onto. If your not doing the work yourself, your going to pay a premium because of the additional labor its going to take to run cables , and pipes. For something thats a little better at insulating your home youre really not saving diddly squat on spray foam vs fiberglass, What 10-15 $ dollars a month on heating??
You need to do some more research on spray foam than watching an advertisement
Nobody discusses the side effects of an air-tight living structure. Air must be replaced. Period. You cannot simply keep breathing the same air over and over. With modern houses being so air-tight, you see more and more health problems manifested in different ways. Now whole-house ventilation systems must be used to combat the stale air problem. That means bringing fresh outside air into the house; something the entire spray foam industry says is a bad thing. Their entire ad industry touts the product as being air tight. While they say that that is a good thing, for heat and cost reasons, the fact that whole-house ventilation systems now incorporate heating systems just to warm this incoming air completely negates the industries argument. There went your "cost savings", right out the window (or more accurately, the roof vent). Educate yourself, people.
I want fresh filtered air brought in my home on my terms. Not through uncontrolled air leaks through my building envelope that cost great deal of money long term in increased cooling and heating costs.
"It's short term inconvenience for hundreds of years of comfort and energy savings"
Please, enlighten us to the last 200+ year old home you sprayed. Not only will the housing codes have completely changed in the next two centuries, but this magic foam will probably have decayed to dust behind our sheetrock like all foam does in extreme heat over time.
SilverBird, you have no idea of building science, it's over your head.
I understand your skepticism, SilverBird. But START by ASKING QUESTIONS, NOT by making assumptions.
For example, what is this spray foam made of?
💯 correct! Even wood rots with age, imagine what happens to that cancerous foam, its lifespan is probably 30 years max
@@oreocarlton3343 or probably 5 years or maybe 40 years and how about if people start living till their 100 years old huh huh huh.
@@TrevorEMayo wat
Insulation shouldn't be directly contacting the bottom side of the roof. It will cause the shingles to over heat and fail prematurely. There should be an air gap for ventilation to be drawn in from the soffits.
Wipsplash Nope.
Wipsplash
you couldn't be more incorrect. in fact, it'll make the roof last longer.
Yup. Correct.
Talk about closed cell and picture open cell?
I like the idea of straw bale home R35 value with steel framing and hempcrete exterior. Not perfect for extreme humidity climates, but good for most locations. To bad building codes often don't allow this option.
I would never put foam in my house. I would not suggest to do it. Because if house gets on fire and you live in second floor. From foam insulation is coming black poisonos smoke. And foam burns fast thru wall. There wont be any resistance. You could put tourch to foam and see how it burns but imagen when fire starts tempertures are extremly high. And it wil burn much faster. Fiber glass is good choise but still fire gets thru fiber glass pretty fast. My best choise would be rockwool. If I would fo some garage or barn where i dont live only work. I would use foam. It is faster and price is good. But in house I would suggest you to think about it. But its your choise :) And this is my opinion. But all I told you is true about how fast and dangeros smoke is from foam.
Don't properly placed fire detectors warn you in time? Doesn't make sense to me.
how can i buy.can you give me aney ideya
hahahaha these comments are almost nothing but people talking about something they have no understanding of other then a video they watched on TH-cam. Want real questions answered about Spray Foam? call your local Insulator and get a hands on experience with the stuff.
A great day to game a smart person!!! Finally!! Only took me 10 mins of scrolling lol
I wish the people making and selling it would just plug the hole under their nose with it.
I priced the "spray foam kits" and to me, spending $12,000. to insulate a 30x44 roof is outrageous.
I wouldn't use spry foam we got it and they sprayed right over our cords in the roof and when one shorted out it caught on fire and the fire department had to destroy half the wall from the out side and the inside just to get to the fire if I had installation they said all they would have had to do was ripe it off the wall instead of riping half my fucking wall out from out side and in
You had a fucking moron for an electrician then !
So roof don't need air vent?
what is thinf dor
I say do cellos it's the best and the least flammable and foam insulation is super flammable.
Definitely spray foam hands down.
is this just a spray foam add?
what is this thing for
spray foam if it's done wrong a lot of health problems it's has to be done when the temperature it's right or else the chemicals don't mix and create health problems for u
I have heard that spray foam installation is not a breathable material and easily forms mold.
open cell allows moisture to travel through... Also a properly ventilated HVAC system counteracts this effect on closed cell insulation.