0041343001194

Super TUFF-R

Model 268413

Internet #100322369

Store SKU #296462

Store SO SKU #621947

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

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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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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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This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
 
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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
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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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This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
 
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ROOFING

This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
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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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This question is from 1/2 in. x 4 ft. x 8 ft. R-3.3 Foam Insulation
 
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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
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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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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.
Mark Read Less
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August 2, 2015
Answer: 
Yes, this product can act as a vapor barrier.
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Would this .5in be good enough to insulate outer basement walls directly on the concrete or would I need to go thicker? I'm in New Jersey...

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New Jersey
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May 12, 2016
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Asked by
Massachusetts
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May 13, 2016
Answer: 
Dear Chelo: No. New Jersey is located in Climate Zone 4, and the minimum insulation for basement walls according to the International Residential Code is R-10. R-20 will save you money, however. According to a report published by the U.S. Department of Energy, the annual savings with R-20 basement insulation in a 1,500-square-foot home ranged from $280 per year in Washington, DC to $390 per year in Read More
Dear Chelo: No. New Jersey is located in Climate Zone 4, and the minimum insulation for basement walls according to the International Residential Code is R-10. R-20 will save you money, however. According to a report published by the U.S. Department of Energy, the annual savings with R-20 basement insulation in a 1,500-square-foot home ranged from $280 per year in Washington, DC to $390 per year in Buffalo, New York, assuming that natural gas costs $0.72/therm. So it would be smart to install R20 now. Foam board provides ~R5 per inch, so you would need to install a 4" thick layer.
Another key point: Polyisocyanurate foam board like Tuff-R should NOT be installed below grade, because it absorbs water. You should use XPS foam board instead, e.g. Foamular: Owens Corning Model # 24DD, Home Depot Internet # 100320335 Store SKU # 528022 We use XPS for all exterior applications because it does not absorb water.
If you can install insulation INSIDE your basement, here are four tips:
(1) Install 2" outside and 2" inside. The outer layer will block moisture from getting to the exterior side wall. The inner layer will help to block moisture transmitted by the concrete that is drawn up from the foundation. Install a poly vapor barrier first, against the concrete wall, then 2" of foam board, then build your stud wall in front of the foam board. Be sure to carefully seal all of the edges and joints in the foam board, to block air leaks. The 'Windows and Doors' version of Great Stuff foam works well; it remains flexible after it cures, to stop cracks as things expand and contract.
(2) If you have sufficient ceiling height, also install 1" on the floor, to create an insulated "cocoon" linked to the foam on the walls. Be sure to seal all of the joints and edges carefully with a thick coat of DAP 230, to block air and moisture leaks.
(3) If there is any possibility of moisture in the basement, however, start with a layer of Dri-Core panels -- which have a rubber layer and small channels on the bottom that allow moisture to trickle toward a drain. See: DRIcore Model # CDGNUS750024024, Home Depot Internet # 202268752 Store SKU # 361018. DriCore recently saved a wood floor in a home we remodeled along the shore in Massachusetts. Water leaked in around a window during a downpour, ran down the wall - and under the DriCore panels. The wood floor did not need to be replaced.
(4) If you insulate the interior of your basement, be sure to read up on "fire blocking" -- an essential step that many people overlook. You must install fireblocking to fill the gap at the top of the basement wall, and every 10' along the wall. Every penetration in the framing, e.g. for electrical lines or pipes, must also be sealed. Do a search for "How to Firestop Your Basement" by Contractor Kurt -- a great resource. Two tips: (a) Do NOT use any "fire block foam" product to seal gaps and penetrations; it will ignite at just 240 degrees F, before your wood studs! Use fire stop sealant, e.g. 3M Model # CP-25WB+, Home Depot Internet # 100166701 Store SKU # 163096 (b) Roxul rock wool is a great solution to pack and insulate the gap at the top of the wall, and fill the horizontal gap along the wall. It is much denser than fiberglass, molds kind of like clay and stays where you put it. We also stuffed it into the end of floor joist bays to insulate the rim joist. See: Roxul Model # RXCB351525, Home Depot Internet # 202090820 Store SKU # 974419
I hope this is helpful.
Mark Read Less
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Customer Reviews

Rated 5.0 out of 5 by 7 reviewers.
Rated 5.0 out of 5.0 by 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. January 8, 2014
Rated 5.0 out of 5.0 by 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. January 27, 2015
Rated 5.0 out of 5.0 by 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. April 4, 2014
Rated 5.0 out of 5.0 by 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. August 17, 2010
Rated 5.0 out of 5.0 by 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. February 7, 2010
Rated 5.0 out of 5.0 by 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. November 30, 2011
Rated 5.0 out of 5.0 by Insulation This product has helped lower my energy bills. It also has helped keep the heat in the upstairs rooms in my old house. November 11, 2010
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