Radiant Barrier In Difficult Or Low Pitch Attics - (It's SUPER Easy With Two People)
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- Опубликовано: 5 сен 2024
- atticfoil.com/...
It IS possible to install AtticFoil quickly and easily in a truss built attic using our 26" wide AtticFoil radiant barrier foil rolls. Watch the video for more tips on this type of installation.
Our 26" Wide Radiant Barrier From www.AtticFoil.com is PERFECT for Truss Built attics. Please comment below on how your installation went. atticfoil.com/index.php/products/26-wide-for-trusses/
What if there is already insulation between the rafters?
@@markschiavone8003 would definitely help. It would work off the emissivity quality of the foil since the airspace would be the attic space below the www.AtticFoil.com
I’m doing it this weekend 👍🏻
Notice any savings
Here are a couple thousand reviews to look at: www.shopperapproved.com/reviews/AtticFoil.com
The Department of Energy says the foil should droop to leave a 10" space between the bottom of the deck and the foil for it to be effective. It looks like you're stapeling it directly to the bottom of the roof deck.
I think you misread the information. It says 1.0 inches not 10 inches: www.energy.gov/energysaver/weatherize/insulation/radiant-barriers The radiant barrier is typically stapled to the bottom of the roof rafters. This is usually between 3.5 and 7.8 inches depending on the rafter size.
If there was a small roof leak, how easy would it be to detect it provided you're not actively searching for a leak? Would this block moisture to the point where you won't know you have a problem until it's a huge problem? Great vid, thanks
Normally any water leak will leave streaking or staining on the foil. If you run the AtticFoil horizontally it will also get to the seam and start to drip and leave the edge discolored. Then, you can follow the stain to the leak.
It seems to me that this is not leaving any air gaps as you suggested in other videos. It looks like he stapling directly beneath rafters.
There is a drop down ceiling. There is an airgap at the bottom. Standard install of www.AtticFoil.com
Can't find a clear answer anywhere. My roof is already OSB with a radiant barrier on the bottom (Solarboard type product). Would adding an additional radiant barrier on the bottom of the rafter like this provide additional benefits or do you get marginal returns on additional layers? I'm in San Antonio in a 1.5 story and all three of my air handlers are in the attics, along with all the HVAC ducts.
Great Question! You may want to read the Dept Of Energy Study here for more info: atticfoil.com/index.php/technical-info/dept-of-energy-study-results/ The answer is yes, it WILL help reduce more heat from entering the home. The first layer will do some (like a filter) but the second layer stapled to the bottom of the rafters will virtually eliminate all radiant heat that gets past the first layer. We have had many home owners and some builders do both with amazing results. You can stand in the attic and not even know if the sun is shining on the roof or not. At this point about the only heat entering the home from the attic is by conduction. That's the difference between the temperature of the ventilated attic and the living space. This heat flow is controlled or by traditional insulation. Does this help? Ed.
How much difference will this really make? We're building a house net year. Will use metal roofing over plywood. Want to do this under my trusses.
If you are doing a metal roof look at www.RoofingFoil.com It's the best possible method. Way better than putting in the attic.
Do you still need to leave a gap at the bottom and top if there are no soffits along the eaves/ overhang.
Yes, you still want air to enter between the foil an the roof deck (it will come from somewhere/inside the attic) and go to the top. If you have holes/ventilation in the attic, hot air will naturally get out and relatively cooler air will come in.
I'm going to be replacing my three tab asphalt shingle roof with new architecture asphalt shingles. Can this product be applied on the deck between my roofing paper and new shingles during the re-roof or does it have to happen in the attic?
Won't help. You MUST have an airspace on one side of the foil for it to work. This video helps explain it: ruclips.net/video/aympJmf4bUU/видео.html
Will attaching to the bottom of the roof deck in a ventilated attic still allow the shingles to stay cool enough in the summer to avoid damage?
Yes, no issue with overheating. Here is the video where it shows the roof over a radiant barrier is less than 10º hotter than the area without the radiant barrier: ruclips.net/video/OHpyv_kxmoI/видео.html And our website with more info: atticfoil.com/index.php/knowledge-zone/knowledge-zone-learn-about-radiant-barrier/myth-or-truth-radiant-barrier-damages-roof-shingles/
what do you do if your entire attic is a "harder to reach area". I've got a 4/12 pitched roof. Is there a rigid foam radiant barrier that i could slide into the area closer to the eaves from the middle of the attic?
Great question! Take a look at the "Hybrid Method" here: atticfoil.com/index.php/installation/hybrid-install/ Or, an easy solution is to do the Over Insulation method with this trick. Precut the pieces so they are the length from the center of the attic to the eaves. Then, roll them up and take them into the attic in a box. Then, use a pole like a 1x2 or a PVC pipe with a nail taped on the end (or both ends). Then stab the AtticFoil with the nail and push out to the eaves. You can use the nail to stab it and move around. It does not have to be perfect. You just want to get a piece of atticfoil.com/index.php/products/26-wide-for-trusses/ between the hot roof and the insulation. Cover as much as you can but don't worry if there are a few missed spots. You will see an immediate and huge difference on a low pitched roof. Ed.
how does this foil covering affect cell phone reception in the house?
Maybe 10 years ago, but not today: atticfoil.com/index.php/knowledge-zone/knowledge-zone-learn-about-radiant-barrier/myth-or-truth-cell-phones-and-radiant-barrier/ Video (From 10 years ago) ruclips.net/video/9NpGExXUkIQ/видео.html
At best , I can only probably do the staple method but not the lay over the insulation installation method because I have a whole house fan in my attic and plan to keep it. Question: will the attic foil stapled reduce the effectiveness of my regular blown in insulation during the winter months because I can’t do both types of installation methods? I live in central California about 50 miles from Sacramento. Thanks
No, in the Winter heat is leaving the home. The www.AtticFoil.com stapled up should not have any effect on the insulation. In fact, the AtticFoil will reduce some radiant heat loss in the Winter even if it's stapled up.
@@AtticFoil thank you for your response.
Would this be a good option for a poorly insulated attic in a zone 5 climate rather than adding cellulose or fiberglass?
For climate zone 5 you definitely need decent attic insulation first. It's just too cold there. It's like wearing a sweatshirt when you need a jacket.
This may have already been asked and I apologize if it has been, but do you recommend solar shield first, then insulation or can insulation go between rafters/attic studs followed by solar shield?
Also, do you recommend adding a solar shield on an exterior wall under the siding if using rain screen?
Normally, you don't install insulation between the rafters in a VENTILATED attic. This is like holding a jacket over your head....Why??? Just staple up. As for the walls? Yes, it works great behind siding. Info here: atticfoil.com/index.php/applications/house-wrap-behind-siding/
@@AtticFoil what if you are finishing an attic?
@@anduong6595 Take a look at how to finish a cathedral ceiling here: atticfoil.com/index.php/applications/cathedral-ceilings-hotmixed-climates/
question..i see in the video the guy stapled the top portion of the rafter on the outside and another stapeling in between of the rafters on the bottom? is there a certain technique like stapeling the whole foil on the outside or does it have to be stapled in between the rafters..or both? i might be over thinking this.....
What you are seeing are two different install methods. Stapled to the bottom of the rafters is the standard attic application. www.atticfoil.com/index.php/installation/staple-up-installation/ And where you see the foil being stapled INSIDE the rafters is for converting an attic into a living space and making a cathedral ceiling. www.atticfoil.com/index.php/applications/cathedral-ceilings-hotmixed-climates/
I have a. 2 story home with a whole house fan installed in the upstairs hallway ceiling. How would I need to install the foil as to allow the required exhaust ventilation for the fan to work?
You are basically "Pushing" air into your attic. You will want to have plenty of "holes" or spaces for the air to be pushed out of the attic. Install the Radiant Barrier Foil in a way that does NOT block these off. You want the air be able to be pushed out of the attic as though the foil is not even there. Gaps at the tops and bottoms and any roof vents, cut holes in the foil below them.
Which is better stapeling the foil to the rafters or laying the foil on top of the insulation at the joists?
It depends. The main thing is if you have ductwork in the attic and keeping your home is your primary concern. Here is our information on which install method is best: www.atticfoil.com/index.php/installation/best-install-method/
What about using r-tech insulation board?
Will it work? Yes, but it's the foil side doing the work. The foam board does NOTHING when air can flow freely around it. Think of a refrigerator door. It's only effective if the door is CLOSED. This is like holding a jacket over your head instead of using an umbrella. Waste of money for no additional benefit.
is this effective even though it is not air sealed?
Yes, we are NOT trying to seal up the attic. It's like SHADE from the heat. The www.AtticFoil.com reflects the radiant heat and you WANT ventilation to help carry the heat between the foil and the roof deck.
@@AtticFoil I guess it is more effective against heat rather than cold? I live in the south and cold isnt really cold, in the summer though, the attic gets terribly hot, that has to effect the efficiency of the AC
Yes, radiant barrier is most effective with high temperatures. We sell a LOT of www.AtticFoil.com in the South. Huge benefit and bang for the buck. And, like you mention when you staple up it puts the AC in a less hostile/hot environment which is more efficient and easier on the equipment.
@@AtticFoil is there any benefit at all if it is only possible to install it in part of the attic? I would imagine no, but maybe...
Great question!!! Yes, www.AtticFoil.com has a cumulative effect. The more coverage the better! It's like a tree over half your home...still helps right?? atticfoil.com/index.php/knowledge-zone/knowledge-zone-faq-videos/faq-videos-does-partial-coverage-work/
WHAT IF THE RAFTERS ARE METAL, HOW DO YOU MAKE IT STICK UP THERE , ESPECIALLY WHEN IT GETS HOT
You have several options. You don't need to attach to every rafter so you could glue/screw etc. some 1" osb or other wood strips to the bottom of the metal rafters. Or, using MAGNETS is the most common method to attach to the rafters. It's kinda like putting a business card on the refrigerator. Check out ebay for cheap bulk magnets.
Check out this system using "pins". You could use the exact same system inside a metal frame attic. ruclips.net/video/UCAx2g4oaTA/видео.html
My 8/year garage attic has Tech shield in the roof. Is it the same as the radiate barrier? I’m going to ac my garage for a workshop and the tech said I needed to add the foil.
Techshield is a product called "Radiant Barrier Decking" it works off the emissivity quality of foil since the attic IS the airspace required. It's not as effective as using a www.AtticFoil.com type product and stapling to the bottom of the rafters. You can use both with amazing results. However, if you are going to AC your garage, you will need to combine AtticFoil with traditional insulation. Call us for more details/help on this. There are a lot of variables and we need more info to give you the best info.
Does it make sense to put glass wool batts between the rafters in the attic and then clip the foil to the bottoms of the rafters?
It does Not make sense to put insulation between the foil and the roof in a ventilated attic. If your attic is ventilated, then you want foil to the outside (stapled to bottom of rafters). This is your first line of defense against radiant heat. Then traditional insulation on the attic floor. This is your second line of defense against conductive heat.
At 3:50 mark, you show how to stuff the foil into hard to-reach places, but this seems to conflict with the 5" - 10" gap from the top plate. Would doing so result in restricted air intake through the soffits?
5" - 10" is more than necessary. Usually I say just a few inches. If the foil is loosely pushed back into these areas and not stapled to the truss, there are going to be gaps and cracks between the pieces or Radiant Barrier for some air to enter the attic below the foil. The air is not under pressure like an air duct, so it does not take much space to work.
AtticFoil Radiant Barrier Foil Insulation
Great to know, thanks. I have a scissor truss above two thirds of my house so I'm in a major pinch even 8' from the top plate. This technique will allow me to at least come close. Thanks!
Can you use radiant barrier WITH a soffit baffle?
Sure, you would still leave a gap at the bottom for air inside the attic to be drawn up between the foil and roof deck or baffle. You want air to flow freely through the attic as though the www.AtticFoil.com is not even there.
Can the Atticfoiil product be purchased any place other they with you? Such as a home center
No, we only sell direct to the customers. It's actually less expensive to pay a little shipping than to pay a distributor to double the cost and add sales tax.
My attic goes so high I can't cover all. Is it better for me to cover insulation in my N. Alabama mixed climate. I definitely need to seal air leaks. Also if I'm covering insulation do I leave gaps.
If you want to staple up look at the "Flat Top" method here: atticfoil.com/index.php/installation/flat-top-install/ If you are doing over the insulation, no need for gaps. Just cover as much as possible.
also do you recommend a product at lowes...called reflectix.
Reflectix makes several products. The one I have seen at Lows is considered a lightweight product that you can tear easy. Here is a video comparing the two. ruclips.net/video/1x-heDn9JQQ/видео.html You can purchase heavyweight AtticFoil Radiant Barrier Here: www.atticfoil.com/index.php/products/48-wide-double-sided-atticfoil-radiant-barrier-foil-perforated/
+AtticFoil Radiant Barrier Foil Insulation i see on your website you offer one with vapor barrier and one without ...which do you recommend for a attic??
For ALL attic applications you would use the perforated products. The solid products are for limited applications where you WANT to stop moisture from passing through. In an attic, you want air and moisture to flow freely through/out of the attic.
Davo Rebo I've used it. it's overpriced for what it does, but used right it works.