Model # 268426

Internet #100322374

Store SKU #804395

Store SO SKU #621947

Super TUFF-R 1 in. x 4 ft. x 8 ft. R-6.5 Insulating Sheathing
0041343001477

Super TUFF-R

1 in. x 4 ft. x 8 ft. R-6.5 Insulating Sheathing

  • Blocks air & moisture, resulting in a comfortable home all year
  • Save money by lowering the cost of heating & cooling your home
  • Energy efficient alternative for non-insulating OSB or plywood

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Product Thickness (in.)
1 in
Product Length (ft.)
8 ft
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Frequently Bought Together

Product Overview

The Super TUFF-R R-6.5 1 in. x 4 ft. x 8 ft. Foam Insulation features radiant barrier-quality aluminum-foil facers on both sides for durability and is ENERGY STAR compliant for savings. It is lightweight and installs easily. On TUFF-R insulation, one facer is a continuous sheet of aluminum foil; the other is a Tri-Plex facer consisting of a three-ply laminate of durable kraft with aluminum foil on both sides.

  • 4 ft. x 8 ft. coverage area
  • R-6.5
  • 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 (1-side reinforced) for durability
  • Moisture-resistant facers
  • High-performance polyisocyanurate foam core for excellent energy efficiency
  • Lightweight design installs easily over OSB or non-insulated sheathing and directly over wood studs
  • How much do you need? Let our calculator help:
    Insulation calculator button

Info & Guides

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Specifications

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Customer Questions & Answers

Are these truly 4' x 8' or slightly smaller as dimension lumber is? Like are these 47.5" x 95.5"...

Are these truly 4' x 8' or slightly smaller as dimension lumber is? Like are these 47.5" x 95.5" or something? Just trying to calculate what I need with the least amount of waste to make some rafter baffles for a cathedral ceiling.
Asked by: sonnaps
This board is manufactured at an intended 4' x 8' size, give or take a small margin of error - typically 1/8 of an inch or less at a 1" thickness.
Answered by: DowGreatStuff
Date published: 2017-07-04

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

Work in Garage for exposed concrete block wall?

I have a basement garage on the 2nd level that has the outside facing wall that's just the exposed concrete block. Would this would to go over concrete blocks? So far I've used waterproof masonry paint and sealed the bottom as it means the concrete slab flooring. My idea is to use rigid foam insulation and the drywall over it if possible. Any insight would be appreciated. Thanks!
Asked by: steve
Dear Stephen: Foam board is the best solution for your garage, with >R5 per inch. A couple of tips: (1) Seal all of the edges and joints to block air leaks. DAP 230 works well for small gaps. Use the 'Windows and Doors' version of Great Stuff for larger gaps. (2) Foam board is very flammable and MUST be covered by 1/2" drywall in any garage, living space, basement, storage area, etc. To boost the total R value, fill your stud bays with Roxul ComfortBatt, which provides R4 per inch. See: Roxul Model # RXCB351525, Home Depot Internet # 202090820 Store SKU # 974419 I hope this is helpful. Mark
Answered by: BvilleBound
Date published: 2016-07-28

Is this product too rigid for shaping to an arched ceiling?

My garage has an arched ceiling with a very gentle pitch. I'm hoping it's possible to make a couple relief cuts on the non-reinforced foil side of this board to make it conform to my ceiling. This is not available at my local store, so I'm unable to look at the product. Any help or info is appreciated. Thanks!
Asked by: insulation
Hello again: I forgot to include the details for 1/4" XPS from Home Depot, which bends easily and would probably be the best option for your curved ceiling. Look for: FOAMULAR 1/4 in. x 4 ft. x 50 ft. R-1 Fanfold Insulation Sheathing Owens Corning Model # 10UM Internet # 100320301 Store SKU # 409692 As noted in the description, this thin insulation comes in a fan-folded stack. A photo is attached. You could simply apply multiple layers to create the thickness and R value you want. XPS has an R value of 5 per inch. I hope this is helpful. Mark
Answered by: BvilleBound
Date published: 2015-09-20
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Customer Reviews

1 in. x 4 ft. x 8 ft. R-6.5 Insulating Sheathing is rated 4.8 out of 5 by 4.
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 5 out of 5 by from Good tuff- product This board is well made. I use it on older homes. High R-value by thickness ratio, 6.5 R for the 1" board. Installs easily and the foil facing adds to its durability if there is any delay between installation and siding of the building.
Date published: 2010-10-22
Rated 5 out of 5 by from This product was easy to cut. Needed a little more than one tube of foam board construction adhe... This product was easy to cut. Needed a little more than one tube of foam board construction adhesive per 4x8 sheet to keep it glued to my basement walls. I found that it was best if I put larger blobs of glue instead of stripes so the board would stick better.
Date published: 2016-11-08
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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