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

Choose Your Options

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

Product Overview

  • 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
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

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

Dimensions

Product Depth (in.)
1
Product Height (in.)
96
Product Length (ft.)
8 ft
Product Thickness (in.)
1 in
Product Width (in.)
48

Details

Faced or Unfaced
Faced
Insulation Application Type
2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation
Insulation R-Value
6.5
Insulation Type
Sheathing
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
6.08lb
Returnable
90-Day
Sheathing Type
ISO
Structural
No

Warranty / Certifications

Warranty Information
15 year limited thermal

Specifications

Dimensions

Product Depth (in.)
1
Product Height (in.)
96
Product Length (ft.)
8 ft
Product Thickness (in.)
1 in
Product Width (in.)
48

Details

Faced or Unfaced
Faced
Insulation Application Type
2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation
Insulation R-Value
6.5
Insulation Type
Sheathing
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
6.08lb
Returnable
90-Day
Sheathing Type
ISO
Structural
No

Warranty / Certifications

Warranty Information
15 year limited thermal

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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

Does this product allow moisture to exit the building shell? Most of the framing lumber used toda...

Does this product allow moisture to exit the building shell? Most of the framing lumber used today is quite green. The moisture has to migrate in one direction or the other (into or out) as the lumber dries.
Asked by: ZZZZZ
Dear ZZZZZ: Foam board is an effective moisture retarder, which increases (obviously) with thickness -- so your wall design should definitely allow moisture to dry to one side. One good alternative is Roxul ComfortBoard sheathing, which could be used to 'wrap' the exterior walls with R-6 per layer. Roxul is much more vapor permeable and provides R-4.2 per inch of thickness, almost as much as foam board. Similarly, if you wrapped the house with foam board, you could fill the stud bays with Roxul ComfortBatt or packed cellulose, to allow the wall to dry to the inside. See: Roxul ComfortBoard Model # RXCB11224, Home Depot Internet #206789748 Store SKU #1001748089 Roxul ComfortBatt Model # RXCB351525, Home Depot Internet #202090820 Store SKU #974419 We prefer the latter approach. This also allows you to create an effective air and water seal on the exterior surface -- which is a good in general. A tip: Carefully seal the foam board joints and edges to block air and water leaks. DAP 230 work well in warmer temperatures, or use DAP 3.0 when it is cold. I hope this is helpful. Mark
Answered by: BvilleBound
Date published: 2017-09-05

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
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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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