Model # 268441

Internet #100322376

Store SKU #163832

Store SO SKU #621947

TUFF-R 1-7/8 in. x 4 ft. x 8 ft. R-12.2 Foam Insulation
0041343001606

TUFF-R

1-7/8 in. x 4 ft. x 8 ft. R-12.2 Foam Insulation

  • Save money by lowering the cost of heating & cooling your home
  • Energy efficient alternative for non-insulating OSB or plywood
  • 1-7/8 in. x 4 ft. x 8 ft. R-12.2 Foam Insulation

Frequently Bought Together

Product Overview

The TUFF-R R-12.2 1-7/8 in. x 4 ft. x 8 ft. Foam Insulation is made with high-performance polyisocyanurate foam core for exceptional, long-term energy efficiency. It is lightweight and installs easily.

  • 4 ft. x 8 ft. coverage area
  • R12.2
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Radiant, barrier-quality aluminum-foil facers on both sides (one side reinforced) for durability and water-vapor resistance
  • High-performance polyisocyanurate foam core for exceptional efficiency
  • Lightweight and easy to install
  • How much do you need? Let our calculator help:
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Customer Questions & Answers

Can this product be used to replace old wet styrene foam board in a hot cover to keep the heat in?

Can this product be used to replace old wet styrene foam board in a hot cover to keep the heat in? I have a hot tub cover that has old wet foam from 20+ years of use, where the steam has ruined the foam. I would like to get some exterior foam to replace the existing inside foam that would keep the heat in the hot hub, since the outside vinyl is still good. We don't have the funds to purchase a new cover for the old hot tub. We just trying to get buy for a few more years. Any thoughts or suggestions
Asked by: Kellysharon
Dear KellySharon: No. Tuff-R is made from polyisocyanurate foam, which absorbs water and moisture - clearly not what you would want for a hot tub cover. Use Foamular XPS foam board which does not absorb water. Home Depot carries Foamular in a range of thicknesses. I hope this is helpful. Mark
Answered by: BvilleBound
Date published: 2016-09-02

Can I use this to wrap a refrigerator that is being used in a garage on 3 sides leaving the front open?

Asked by: Scott
Dear Scott: Foam board is flammable and MUST be covered by an approved thermal barrier in any garage, living space, basement or attic storage area. So if you simply enclose three sides of your refrigerator, this would create a fire safety risk for you and your family, and a building code violation. Second, wrapping the refrigerator with foam board will have minimal effect. The steel case will transmit warmth from the back side under to foam -- basically a large "thermal bridge", like exposed rafters or joists. I hope this is helpful, Mark
Answered by: BvilleBound
Date published: 2016-12-13

Can this board be used as a walkway to access HVAC components in the attic (blown-in insulation i...

Can this board be used as a walkway to access HVAC components in the attic (blown-in insulation is used) if plywood is laid either over or under the insulation board?
Asked by: tom1
Dear Tom: Well, that depends. It would obviously not make sense to install foam board on top of your ceiling joists, only in the areas that will be used for the walkway. You should cover the entire 'floor' of your attic to improve the insulation throughout. Here are a few tips: (1) Step 1: Seal all air leaks into your attic. Before you add any insulation, carefully find and seal all of the air leaks into your attic. Recessed ceiling lights are culprit #1: install Tenmat covers and seal the edges with DAP 230 sealant. See: Tenmat Model # FF130E Hoe Depot Internet # 204286308 Store SKU # 1000012747 and DAP 230, Home Depot Internet #100035980 Store SKU #284425 Great Stuff foam is good to fill larger gaps and holes -- but do not use it near anything that gets hot, e.g. a chimney or exhaust vent. For gaps near a hot exhaust vent, fill the space with Roxul rock wool, then cover it with fire resistant sealant, e.g. 3M Model CP-25WB+, Home Depot Internet #100166701 Store SKU #163096 For the large gap next to a chimney, cover it with aluminum flashing (available at Home Depot) nailed to the joists, and seal the edges with 3M fire resistant sealant. (2) If you have an air conditioning system in your attic and you live in a region with hot summers, you should seriously consider whether you can seal your attic and convert it into "conditioned space". This will significantly reduce temperatures in your attic and house, improve the efficiency of your HVAC system and reduce costs. For example, instead of installing foam board on the 'floor' of the attic, you could insulate the roof deck under the rafters, and seal the soffit and ridge / gable vents. If your house has a relatively simple attic design, this would be a smart move. See Steps 1 to 5, below. Step 1: Foam board: Install sheets of 1 7/8" thick Tuff-R polyiso foam board against your roof deck, between the rafters. This will add R-12.2. See: TUFF-R Model # 268441 Home Depot Internet # 100322376 Store SKU # 163832 Then carefully seal all of the joints and edges to block air leaks. DAP 230 is good for most joints and edges. The 'Windows and Doors' version of Great Stuff foam works well for larger gaps; the cured foam remains flexible to prevent cracks as things expand and contract. See: GREAT STUFF Model # 248312 Home Depot Internet # 100068117 Store SKU # 522661 (Foam board is flammable, however, do not install it next to anything that gets hot, e.g. a chimney or exhaust vent.) Step 2: Fill your rafter bays with batts of Roxul rock wool, which provides R4.2 per inch. Roxul rock wool is also easy to install. See: Model # RXCB301525, Home Depot Internet # 205972559. Use Simpson insulation wires to hold the batts in place. See: SImpson Model # IS16-R100 Internet #100375163 Store SKU #594333. This is the 16" version; a 24" version is also available if your rafters are spaced 24" apart. Depending on the depth of your rafters, this will add ~R-14.7 Step 3: Cover your rafters with sheets of Tuff-R foam board, screwed to the underside of the rafters. This final layer will break all of the "thermal bridges" created by exposed wood, and add R-12.2. Again, seal all of the edges and joints to block air leaks. Step 4: Do the same thing with your gable end walls -- the triangular walls at the ends of your roof Step 5: Foam board is flammable and must be covered with 1/2" drywall if your attic is accessible and used for storage. Simply screw sheets of drywall to your rafters, on top of the foam board. This does not need to look pretty -- just cover the foam board. This is all do-able for the average home owner, without any special tools. The result will be a roof with good R-39.7 insulation, and a tight air seal, year round. Plus your HVAC system will be much more efficient, running in a much cooler attic. However, if this project would be too daunting or costly, seal all of the air leaks into your attic, then cover your sealing joists with 1 7/8" thick Tuff-R and carefully seal all of the edges and joints. Then cover the 'walkway' section with 3/4" plywood -- and cover the rest with drywall, if you attic is used for storage. I hope this is helpful, Mark
Answered by: BvilleBound
Date published: 2016-12-08

Does Tuff R (ISO) contain Formaldhyde?

I think I read somewhere that ISO contains formaldehyde. Does anyone know for sure?
Asked by: Hank
Dear Hank: The MSDS (material safety data sheet) on the DOW website does not mention formaldehyde, which would be required if Tuff-R contained it. So the answer is "no". Two other cautions: (1) Like all foam board products, Tuff-R creates toxic gas when it burns and MUST be covered by an approved thermal barrier in any living space, garage, basement or attic storage area. 1/2" drywall is the standard. (2) Polyiso foam board like Tuff-R will absorb water and should never be installed below grade, e.g. under a concrete slab. Foil facing protects the surface, and we always seal the edges with DAP 230, e.g. when we install Tuff-R on exterior walls. I hope this is helpful, Mark
Answered by: BvilleBound
Date published: 2016-10-24
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Customer Reviews

1-7/8 in. x 4 ft. x 8 ft. R-12.2 Foam Insulation is rated 4.5 out of 5 by 2.
Rated 5 out of 5 by from Great product to help meet energy codes In existing 2 X 4 walls I find this and other foam boards to be perfect in helping to attain the r-values needed to meet today's energy codes. I rip this stuff on my tablesaw to ensure a perfect fit between the studs and it has worked perfectly every time I've used it and gives a nice and clean appearance.
Date published: 2014-03-02
Rated 4 out of 5 by from Good Product but makes a mess Product works as it is suppose to, but other products are easier to work with. Cutting is difficult, especially in the thicker product. I used utility blade and it dulls blade very quickly. You get about one blade per cut then it starts pulling on the foil. For thicker product, you have to cut both sides with utility blade because it doesn't break neatly if you cut just one side and then try to snap it off. And it makes a mess when you cut it too. All these little foam pieces get stuck on your shirt and make a mess out of the work area. It is cheaper than other similar products, so if don't mind the mess and spending money on blades, go with this product. And when it is on the wall it looks pretty cool with the foil facing, like a spaceship, but then you cover it up anyways.
Date published: 2014-10-30
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