Model # 268413

Internet #100322369

Store SKU #296462

Store SO SKU #621947

Super TUFF-R 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
0041343001194

Super TUFF-R

1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation

$11.98 /each

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Product Overview

Make sure your next new construction or residing job not only looks good, but also provides comfort, value and energy efficiency when you include Super TUFF-R polyisocyanurate insulation. These days, all homes need a solid, continuous, water resistant layer of insulation under the exterior finish. If you have insulation only between the studs, the wood framing can represent 25% of the surface area of a home’s walls - and act as a conduit for energy loss. By adding Super TUFF-R insulation to your walls, you can enjoy the value-added benefits of energy savings by using this effective air barrier to cover cracks in old siding and around windows and doors. Adding Super TUFF-R to your home will have a temperature-stabilizing effect in the stud cavity, reducing the potential for moisture accumulating inside walls due to condensation.

  • The Super TUFF-R R-3.3 1/2 in. x 4 ft. x 8 ft. foam insulation is Energy Star compliant and highly durable and moisture resistant; it installs easily over OSB or non-insulated sheathing and directly over wood studs
  • Super TUFF-R Durable Non-Reflective Faced Insulation can reduce water and water vapor intrusion from the outside; it warms the wall cavity, thereby reducing the potential for dew point condensation forming in the walls – a key moisture defense
  • Meet or exceed federal guidelines for energy efficiency for year-round energy and money savings with an R-Value of 3.3
  • Super TUFF-R also acts as a component in a secondary drainage plane, allowing wind-driven rain (which can penetrate vinyl siding) to move quickly down the wall cavity and out the bottom of the wall – another valuable defense against moisture
  • Super TUFF-R also can help protect resided homes against air infiltration through walls, which is a bigger problem than most people realize; on a windy day, air infiltration can cause significant heat loss in a home
  • Lightweight design installs easily over OSB or non-insulated sheathing and directly over wood studs - one facer is blue while the other is radiant barrier-quality reflective foil
  • Using Super TUFF-R in a residing application helps cover cracks in old siding and around windows and doors, covering the whole wall surface, not just the area between the studs, delivering air and water retarding properties for the walls of the home
  • How much do you need? Let our calculator help:
    Insulation calculator button

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Customer Questions & Answers

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Customer Questions & Answers

1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation

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2 answers

Can this foam be carved

This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
Asked by
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September 15, 2016
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Asked by
Boston, MA
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Home Improvement Profile: Professional
September 21, 2016
Answer: 
Dear Alice: Yes. Our son used foam board to create a shell for a paper mache dinosaur head, for example. We glued a number of pieces together to create a thick block, then carved it. A Stanley "Surform" tool is the best option to shape the foam. For example see: Stanley Model 21-295, Home Depot Internet #100155566 Store SKU #185507. Home Depot sells a number of different sizes and shapes; just enter Read More
Dear Alice: Yes. Our son used foam board to create a shell for a paper mache dinosaur head, for example. We glued a number of pieces together to create a thick block, then carved it. A Stanley "Surform" tool is the best option to shape the foam. For example see: Stanley Model 21-295, Home Depot Internet #100155566 Store SKU #185507. Home Depot sells a number of different sizes and shapes; just enter Surform into the search box on the Home Depot website.

One caveat: Foam board is flammable and creates toxic gas when it burns. So if you create a larger object with foam board, it will be a fire hazard if not covered with an approved thermal barrier. This is particularly important in schools, for example.

I hope this is helpful.

Mark
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September 15, 2016
Answer: 
No, this foam can not be carved.
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2 answers

Does this have to be covered by drywall?

This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
Asked by
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August 7, 2015
I've been trying to find rigid foam sheathing that doesn't require drywall to seal my sill joists. I know the Thermax is but I can't find it in stores or a similar product.
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Asked by
Massachusetts
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Home Improvement Profile: DIYer
November 15, 2015
Answer: 
Dear Derek: Foam board is very flammable and must be covered by a "thermal barrier" in occupied space. A "thermal barrier" is equal to 1/2" drywall. Intumescent paint can sometime be used, if approved by the local building inspector. "Occupied space" also includes your garage -- plus attics and crawl / sub floor spaces if they are used for storage. Some inspectors always require a thermal barrier in an Read More
Dear Derek: Foam board is very flammable and must be covered by a "thermal barrier" in occupied space. A "thermal barrier" is equal to 1/2" drywall. Intumescent paint can sometime be used, if approved by the local building inspector. "Occupied space" also includes your garage -- plus attics and crawl / sub floor spaces if they are used for storage. Some inspectors always require a thermal barrier in an attic if there is a door or pull-down stair for easy access.
All of this said, you won't need Thermax. There is an exception in the IRC and IBC for foam spray and board where it is used to insulate the end of joist bays and the sill plate / rim joist. The foam spray / board cannot be thicker than 3" -- and must be at least 2" thick in many parts of the country to avoid condensation. A tip: After you insert a piece of foam against the rim joist, seal all of the edges with the 'Windows and Doors' version of Great Stuff to block air / vapor leaks. It remains flexible as things expand, contract and shift.
Also read up on fire blocking, which many people overlook. This is required at the top of basement walls, along the walls, at the top of stairs, etc. Do a Google search for "How to Firestop Your Basement" from ContractorKurt. Roxul rock wool is a good solution (also available at Home Depot). You can stuff it into the gap at the top of the wall and into the end of floor joist bays, over the foam board. Rock wool is much denser than fiberglass, molds kind of like clay, and stays where you put it. Roxul is also a good solution if you want to boost your insulation and fill the stud bays in your basement.
I hope this is helpful.
Mark Read Less
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Asked by
Catskill Mountains NY
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Home Improvement Profile: DIYer
August 30, 2015
Answer: 
Warning: I am not a pro on this, but I have done some research. To the best of my belief in the USA, the ONLY time you can use foam with a foil face (on the inside) indoors is if you have NO mechanical equipment in your basement/crawlspace. If you have a water heater, furnace, heat pump module, still, whatever, you need to cover with sheet rock. One more time: I'm a DIY'er not an expert so I could be Read More
Warning: I am not a pro on this, but I have done some research. To the best of my belief in the USA, the ONLY time you can use foam with a foil face (on the inside) indoors is if you have NO mechanical equipment in your basement/crawlspace. If you have a water heater, furnace, heat pump module, still, whatever, you need to cover with sheet rock. One more time: I'm a DIY'er not an expert so I could be wrong. I have been wrong, too, but probably before you were born ;-) Read Less
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2 answers

ROOFING

This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
Asked by
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August 5, 2015
CAN THIS BE USED AS A RUBBER ROOFING SUBSTRATE? CAN YOU APPLY BOND. ADHESIVE TO IT?
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Asked by
Massachusetts
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November 15, 2015
Answer: 
Dear TJleo: Yes, with a couple of caveats:
(1) It must be thick enough to stop condensation on the roof board. This will also improve insulation value. In many parts of the country 2" is required, e.g. Owens Corning Foamular, Home Depot Model # 24DD Internet # 100320335 Store SKU # 528022. Be cure to seal all of the edges and joints carefully with a generous layer of DAP 230.
(2) Foam board is Read More
Dear TJleo: Yes, with a couple of caveats:
(1) It must be thick enough to stop condensation on the roof board. This will also improve insulation value. In many parts of the country 2" is required, e.g. Owens Corning Foamular, Home Depot Model # 24DD Internet # 100320335 Store SKU # 528022. Be cure to seal all of the edges and joints carefully with a generous layer of DAP 230.
(2) Foam board is flammable. If you plan to use heated sealant for the seams of your roofing you must be very careful.
(3) You can apply adhesive to it -- that is compatible with XPS / polystyrene. Many adhesives are, but you would need to check.
I hope this is helpful.
Mark Read Less
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August 6, 2015
Answer: 
HI TJLeo,
This product does not meet code for use as a roofing substrate and will not support the load of the roofing.
Mike
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2 answers

Can this reflective service serve as a vapor barrier?

This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
Asked by
Carmel, NY
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August 1, 2015
I am re-insulating my basement ceiling with 9 in. unfaced fiber glass insulation and want to confirm if I install this product between the joists will it serve as an adequate vapor barrier the same as kraft-faced fiber glass insulation?If so, does it matter which side place against the sub-floor above?
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Asked by
Massachusetts
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Home Improvement Profile: DIYer
November 15, 2015
Answer: 
Dear Brandi: Yes, the foil facing on the thicker versions of Tuff-R is an effective vapor barrier, e.g. Home Depot Model # 268441 Internet # 100322376 Store SKU # 163832. The foil facing should face down. Also be sure to carefully seal all of the edges and joints to block air / vapor leaks, e.g. with the 'Windows and Doors' version of Great Stuff foam, which remains flexible as things expand and Read More
Dear Brandi: Yes, the foil facing on the thicker versions of Tuff-R is an effective vapor barrier, e.g. Home Depot Model # 268441 Internet # 100322376 Store SKU # 163832. The foil facing should face down. Also be sure to carefully seal all of the edges and joints to block air / vapor leaks, e.g. with the 'Windows and Doors' version of Great Stuff foam, which remains flexible as things expand and contract.
Foam board is flammable and must be covered by a 'thermal barrier' in occupied space, e.g. a basement. 1/2" dry wall qualifies.
That said, why do you want to insulate your basement ceiling? Is the basement unheated, and you want to insulate the floor above? If the basement is heated, there is no need.
I hope this is helpful.
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August 2, 2015
Answer: 
Yes, this product can act as a vapor barrier.
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Customer Reviews

1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation is rated 5.0 out of 5 by 8.
Rated 5 out of 5 by from This stuff works Used R-15 insulation and this on my 2x4 walls to get a rating of R-18.3.. 2x6 is R-20 so I've almost the same R value using 2x4's to frame house.. Great product!
Date published: 2016-12-27
Rated 5 out of 5 by from Nice and Light In my closet, the back wall of that closet was against my Farmer's porch. The closet was always cold. So I ripped out the drywall to find no insulation at all. In doing it better than code, I first put 2 coats of Kilz, Red Rosin paper, then this foam insulation. It was very easy to cut and install. Lined up great, and provided a very noticeable difference in the temperature of the closet. When you don't have space for regular insulation I would recommend using this.
Date published: 2014-01-08
Rated 5 out of 5 by from Polyisocyanurate not PolyStyrene! Just wanted to mention that this is Polyisocyanurate (Polyiso) not polystyrene (XPS). Polyisocyanurate has the highest R value per inch (3.3) vs. Expanded PolyStyrene (XPS) (2.5). Polyisocyanurate also does not use an ozone depleting blowing agent so it is better for the environment if you're so inclined. This also has an aluminum backer per Dow's site (search for Tuff-R) so it is a moisture barrier as well. Using this in the garage against the part that touches the house as it makes a better air seal than drywall and also is a thermal/moisture break against the drywall/stud interface. I will use Tyvek tape on the seams and caulk the top to provide a good air seal as well. Cheap compared to the thicker stuff although it's main benefit is the air/moisture blocking as opposed to the R value.
Date published: 2014-04-04
Rated 5 out of 5 by from insulation I have a board and batting building so I could not apply insulation to the outside of the building, so I applied it to the inside walls behind my Sheetrock. this is a great product and very economical way to insulate your house. It is also very easy to work with.
Date published: 2010-02-07
Rated 5 out of 5 by from Insulation This product has helped lower my energy bills. It also has helped keep the heat in the upstairs rooms in my old house.
Date published: 2010-11-11
Rated 5 out of 5 by from Easy to install Polystyrene insulation is very easy to work with and install. I installed this in my basement for insulation and vapor barrier with Tyvek tape.
Date published: 2011-11-30
Rated 5 out of 5 by from Easy insulation Used this before and it's an easy way to get decent insulation and sound deadening without the itch of fiberglass. Used the 2" thick version for another project with limited space for insulation but go a higher R value.
Date published: 2015-01-27
Rated 5 out of 5 by from what a women doesn't know Well .me being a divorced woman with a half finished house , I was at a loss as what to do to cover the beams in the walls and ceilings in half my house and then waaalaaa I go to the home depot website and there is my answer. no messing with rolled insulation, that i am allergic too. I hung these on the wall and ceiling, easy as pie to cut to fit. Now I am a proud divorcee that got the job done all by myself and saved tons of dollars. Thank you Home Depot for such an excellant website.
Date published: 2010-08-17
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