Have you ever seen a scam claim for a product stating a unrealistic R-value? Please comment here!

@jamesclements7837

3 жыл бұрын

Very common in France and UK , I have been fighting this miss information for years this has done a lot of damage to the reflective foil market , when install correctly Radian Reflective transform the thermal performance of the building, Do it correctly ..

@kodyhunter5566

2 жыл бұрын

When I put the radiant foil on my roof floor should I staple it? Or let it sit loose for air to flow???

@AtticFoil

2 жыл бұрын

@@kodyhunter5566 Lay it loose. No need to staple down.

Thanks much...you cleared up a number of issues.

Great video! You just saved me hundreds! I used OSB with the reflective foil backing for my roof sheathing and was considering adding bubble to the underside. The actual R value per $$/sf just isn't worth it.

Thanks for the information. I learned something!

Thanks Ed. Informative video.

This is so helpful! I almost went right out to buy some reflective bubble foil to insulate my garage door, but was seeing widely different R values for the same product, which didn't make sense to me. Thank you for clearing the air on this!

Thanks for this!

is there any benefit in the winter season?

Excellent . . . . Really well and clearly explained . Thank you

Hi.. can you tell me what the name of the material you have rolled up during this video..specifically the role on your right... Im looking for some this for a project for camping...

@AtticFoil

9 жыл бұрын

It's a product called Solarguard. Available from Home Depot Online. It's not very durable. Intended to be installed and left alone - keep this in mind depending on your camping application.

I have a commercial building, Auto Service shop with 30 foot ceiling. we have a radiant barrier but the joist hangers are rusting out. Can the radiant barrier be causing this trapped moisture?

@AtticFoil

10 ай бұрын

Probably not caused by the radiant barrier. My guess is lack of ventilation and condensation issues. Take a look here: bluetexinsulation.com/pages/moisture-in-metal-buildings-causes

Good explanation

I’m thinking about installing your Atticfoil on top my existing insulation. Please tell me which one to buy from your website. Thanks

@AtticFoil

4 жыл бұрын

Buy the normal AtticFoil Radiant Barrier in hot climates: atticfoil.com/index.php/products/48-wide-double-sided-atticfoil-radiant-barrier-foil-perforated/ for cold or mixed climates, I'd go with the SuperPerf Radiant Barrier product: atticfoil.com/index.php/products/45-wide-perforated-double-sided-radiant-barrier-foil-superperf/

I have a bedroom above my garage that has the roof coming at an angle and a knee wall at the edges... should I use foam board and this stuff behind the sheet rock? There is no insulation in the section above the knee wall where the roof deck is essentially directly above the sheet rock and it gets extremely hot in the summer... These channels are connected at both ends to the attic and knee wall space...so i'm trying to find the best way to insulate and prevent the heat from the sun from getting in! Thoughts?

@AtticFoil

5 жыл бұрын

Yes, foam board combined with radiant barrier will make a huge difference with "hot walls". This blog post may help too: www.radiantbarrierguru.com/hot-rooms-in-my-house-how-to-make-them-more-comfortable-part-1/

Can you cut and staple strips of attic foil flat in between the rafters? Or does it have to be stretched across (covering) the rafters?

@Xonikz

4 жыл бұрын

You can do that, but the rafters transfer heat, so it won't be as effective. If you're able to staple into the bays and wrap over the rafters before putting your ceiling on, I would tack a lateral grid of board to the rafters to leave an air gap between the rafter and the sheetrock. It's like the way metal roofs are put on, only upside down.

I saw one advertised with R-7 on amazon, so, I knew something was amiss. Dog leashes I bought for a 90 lb dog from amazon, would not hold a 30 lb dog, an electrical cord bought on amazon melted, etc, etc. amazon has no controls. No check. No Accountability.

I would like to know if the reverse radiant has and effect on the deterioration of the roof shingles?

@pilsley4737

4 жыл бұрын

This is a good question. After installing insulation at the bottom cord of my attic 10 years ago I noticed a rapid deterioration of my shingles. Obviously needed more ventilation. But if a further layer of attic foil were added does that also mean more heat reflected back at the shingles?

@AtticFoil

4 жыл бұрын

@@pilsley4737 No, the roof temperature will only increase 5-10º over a radiant barrier with decent ventilation. This is considered nominal for roofing products since they are designed to handle temps over 200º. More here including thermal image video with/without radiant barrier. atticfoil.com/index.php/knowledge-zone/knowledge-zone-learn-about-radiant-barrier/myth-or-truth-radiant-barrier-damages-roof-shingles/

R value is a thermal time measure. Foil does not have an R value. Its efficiency is by reflection of infra red rays which create heat and by emissivity - its inability to re-radiate the rays. Good quality foil will reflect up to 98% of the rays and emit a maximum of 3%

@QwikKota

4 жыл бұрын

This is a bubble or foam product he is talking about, a sandwiched product. Slight R-value from the foam or air but a waste of money like he is saying.

Can you use the attic foil in the wall as and roof of a metal building, then also add 2” foam insulation? Making an insulation sandwich more/ less.

@AtticFoil

3 жыл бұрын

Probably yes. However, you should call us do discuss the specifics of your application. We need more info. New or existing building, conditioned or non-conditioned, location etc? Call us at www.AtticFoil.com

In the Fresno area, they install radiant barrier over spaced sheathing when removing cedar shakes; this means that half the foil is covered by the skipped or spaced sheathing. Since half the foil is without a air space, wouldn't this reduce the effectiveness of the radiant barrier?

@AtticFoil

10 жыл бұрын

Yes, this is pretty common. This will reduce the overall effectiveness by about the amount of area where there is no air space. One suggestion is to remove every other lath. This will help maintain the integrity of the framing and increase the effectiveness of the radiant barrier.

@daman589986

10 жыл бұрын

the temperature of the composition will increase also.This may reduce the life of the composition.

@AtticFoil

10 жыл бұрын

The actual temperature increase is less than 10 degrees. This is considered nominal. Here is a video on this with thermal imaging. kzread.info/dash/bejne/gXyk29iYm9vTn6w.html

That wood is R1 per inch as well. Excellent path of least resistance in that R value test.

@AtticFoil

2 жыл бұрын

Thermal bypass is a whole other issue.

Do you have a fire test video where you apply a blow torch directly to this foil? Does it have a fire retardant coating on it?

@AtticFoil

9 жыл бұрын

No test video. We do not claim the product to be "Fireproof" The aluminum will resist flames, however if the internal scrim gets hot enough it will eventually liquify and burn. Here is more fire info: www.atticfoil.com/technical-information/fire-testing.html

Shingle temperatures usually only go up less than 10 degrees over a radiant barrier. This is generally considered not to be significant. I have a complete video using thermal imaging which shows part of the roof with and without radiant barrier. It's called "Does Radiant Barrier Damage Shingles?"

death air ? What is this? Thin air layers without or with few air circulation within the layer?

@AtticFoil

10 жыл бұрын

Dead air - not death air. Air space that is sealed without ventilation.

What if your attic has a bunch of blown in cellulose insulation?

@AtticFoil

10 жыл бұрын

Attic insulation is great. I like to think of it as walls of a refrigerator. Radiant barrier is more like shade. You have both types of heat coming in your home. a radiant barrier should be your first line of defense against radiant heat, and regular insulation should be your second line of defense against conductive heat flow.

Yes, radiant barrier helps with heat retention in the winter when the main source of radiant heat is coming from inside the home. It stops convective looping in the insulation and allows the home to keep more heat inside. Go to AtticFoil(dot)com for more info.

Picked up that fiberglass batt without gloves!

@AtticFoil

2 жыл бұрын

I've got thick skin.

Will this keep my house cooler in the summer?

@AtticFoil

6 жыл бұрын

Cooler? Maybe. We have many customers who have AC but the house won't stay cool enough. Putting in a Radiant Barrier usually makes a noticeable difference. If your AC can keep up it may not make it "cooler" but it will cut down on your energy usage.

WRT "Dead Air"...... it has an R value of slightly less than 1 (~0.9) and reaches this maximum at between 5/8" to 3/4" thickness. Any thickness more than this it loses R value due to convection currents within the airspace as a result of the temperature differences between the 2 surfaces. So the R value of a 6" air gap would likely be at best R0.5.

@AtticFoil

3 жыл бұрын

I think your comment totally supports my argument made in the video. Bottom line is that NO product 1/4" has an R-value of 7, 10, 15 etc. These companies have very misleading info when they talk about R-Value. The R-value stated is ALWAYS in some type of "assembly" which is rarely how the product is installed. And, as you point out, the "assembly" R-Value is probably overstated too. Thanks for the comment. Ed. We have several great new products at www.BlueTexInsulation.com that combine Foam/PE Woven Fabric and Pure Aluminum to make an amazing product for metal building applications.

You COULD do this, but WHY?? For a normal attic this would make in harder to install and unless you cover the full rafter, you will get what is called "thermal-bypass" or heat bypassing the foil through the rafters. It's easier and more effective to just staple to the bottom of the rafters. If you are doing a cathedral ceiling, THEN you will need to attach inside the rafters - see Cathedral Ceiling install methods on the website AtticFoilDotCom.

THIS STUFF is for REAL!! 41% savings over last year on my E(xtorsion) bill and had a temperature increase of 5 degrees over last year (average ambient). SO GLAD I did this in my attic. Wish I had done this the last time I added inches to my blown-in insulation. Brought the temperature down 60 degrees in my attic, no BS. Also added 2 solar fans:)

Question: I have a small cottage in Florida with a metal roof. In the summer the AC does it best to keep up but the attic is so hot it seems that the cool air coming out is not as cool as it could be. Will attic foil help reflect the heat so that the cool air flowing in the duct work remains cool?

@AtticFoil

3 жыл бұрын

This is exactly what www.AtticFoil.com is designed for. The heat from the hot roof is radiating across the attic space, heating up the insulation and then entering the home. Your AC simple removes a certain amount of heat. By reflecting a lot of this heat back this means an easier battle for your AC. (less heat getting in). Basically AtticFoil make is like a really cloudy day. I'm sure your AC can keep up on days like this.

does atticfoil help to save energy during winter ?

@AtticFoil

2 жыл бұрын

Yes. The best method to keep heat "in" is to lay the SuperPerf product on top of the existing insulation. It works mostly by making the EXISTING insulation MORE effective. atticfoil.com/index.php/installation/over-the-insulation-install/

can this attic foil put over fiberglass insulation ?

@AtticFoil

3 жыл бұрын

Yes, you can install directly over fiberglass insulation. If your home is older/leaky or you are in a colder area, I'd recommend the SuperPerf Product. Here is info for installing over insulation: atticfoil.com/index.php/installation/over-the-insulation-install/

Everybody keeps talking about homes? What about a semi truck? What be the best way to install something like this? There have beams on the inside behind the panels that are like beams in the house. Get so hot and no semi trucks it's insane. You can walk inside and go to the restroom while your truck is turned off and when you get back it is so hard to cool it off. The AC unit on the semi truck works fine it blows a lot of air. But an APU on what's in my truck doesn't do much you're fighting against everything.

@AtticFoil

Жыл бұрын

We have many people install our metal building products at www.BlueTexInsulation.com inside metal shipping containers, trailers etc. with great results.

Put that Radiant barrier in our Attic years ago. Just laid out on top of the Insulation that was there. Had people laugh that it was only Tin Foil. But used to be 4 degrees or more temps between the floor and ceiling in our house. After installing this now its 1 degree difference only. Wrapped a live bait tank with 2 layers of this stuff. Sitting in 90 to 100 degree temps for almost a month. Bream we had been using for bait (3 small ones) was still alive. Boat was under a roof. But still hot temps. Bait used to only last hours. but after covering it with this stuff. Days and weeks now.

@AtticFoil

6 жыл бұрын

Thanks for the comments! When you take out the radiant heat and just deal with conductive heat then you have seen what a difference it can maike.

@Pete-from-Tn

6 жыл бұрын

AtticFoil Radiant Barrier Foil Insulation Worth the price, if we had to build a new house. It would be wrapped in this stuff.

@AtticFoil

6 жыл бұрын

Absolutely! Using the single sided radiant barrier instead of Tyvek House Wrap is rapidly growing in popularity. atticfoil.com/index.php/applications/house-wrap-behind-brickstone/

is your product available India ?

@AtticFoil

3 жыл бұрын

Sorry, it is not.

@DeepakBhat

3 жыл бұрын

@@AtticFoil okay . im following your channel from last few months thanks for educating us 🙏 great stuff thank you 😌

I wish van conversion folks would watch this, they are all just gluing this stuff directly to their van metals walls. :(

But I want something for underlayment on a sub-floor between floor joist that is exposed to outside cold, not in my atic, So bubble foil will meet that requirement better and will detour rodents.......

@AtticFoil

2 жыл бұрын

Check out our foam/foil products at www.BlueTexInsulation.com 10 times more durable than bubble foil products.

As long as one side of a double-sided foil radiant barrier is open to an air space, the foil with work to block 97% of radiant heat transfer. Let me caution you against putting insulation in your attic rafters - that is completely useless in a non-conditioned, vented attic space. The r-value belongs against the thermal envelope - or the attic floor against the home.

I have a new product that is R 600. You just take 60 rolls of R 10 and sandwich them together add 6 inches of your choice of wall material and add 4 more inches of spray foam. Do you see where I am going with this. It should be illegal to advertise a product that only reaches a given R factor with the help of other materials. Scammers! Thanks for the video and explanation.

Heat always from hot to cold. Assuming the inside of the home is warmer than the outside heat is flowing out of the home regardless if the heat is on or not. Radiant barrier will help reduce some of the heat loss to keep the home warmer. It should never make it colder.