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2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation

  • Lightweight, easy to use
  • Multiple thicknesses
  • 2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation
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Product Overview

Insulfoam rigid foam is a high-performance built-to-spec sheathing insulation that provides superior R-value and moisture resistance. It is offered in multiple thicknesses and dimensions, in both square-edged and tongue-and-groove joints. It is lightweight and easy to use and provides an optimum balance between performance and cost. Manufactured by one of North America's leading insulation and construction materials companies.
  • Specifically developed for wall sheathing, siding underlayment and basement and foundation insulation
  • 8 ft. L easily cuts to desired size
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Moisture resistant with great insulating properties
  • Poly-facer on both sides for durability and flexibility
  • Note: Product may vary by store



  • Click here to learn more about Eco Options and Energy Efficiency
  • How much do you need? Let our calculator help:
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Info & Guides

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current product
2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation
BrandSTYRO IndustriesSTYRO IndustriesSTYRO IndustriesR-Tech
NameFP Ultra Lite 1 in. x 2 ft. x 4 ft. Stucco Grey Foundation PanelFP Ultra Lite 2 in. x 2 ft. x 4 ft. Natural Tan Foundation PanelFP Ultra Lite 2 in. x 2 ft. x 4 ft. Earth Tone Brown Foundation Panel2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation
Price
Ratings
(36)
(4)
(22)
(161)
Product Thickness (in.)1222 in
Insulation LocationExterior Wall FoundationExterior Wall FoundationExterior Wall Foundation2x4 Wall,2x6 Wall,Attic,Basement,Crawlspace,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-ValueR5R10R10R7.7
Sheathing TypeXPSXPSXPSEPS
Insulation FeaturesMold Resistant,Paintable,Water ResistantMold Resistant,Paintable,Water ResistantMold Resistant,Paintable,Water ResistantStructural
Product Length (ft.)2228 ft
Compatible Install SurfaceCement,Concrete,Existing InsulationCement,Concrete,Existing InsulationCement,Concrete,Existing InsulationCement,Concrete,Existing Drywall,Plywood,Wood
Product Width (in.)48484848 in
Faced or UnfacedFacedFacedFacedFaced
Interior/ExteriorExteriorExteriorExteriorInterior/Exterior
View ProductView ProductView ProductView Product

Specifications

Dimensions

Coverage Area (sq. ft.)
32
Product Length (ft.)
8 ft
Product Thickness (in.)
2 in
Product Width (in.)
48 in

Details

Compatible Install Surface
Cement,Concrete,Existing Drywall,Plywood,Wood
Faced or Unfaced
Faced
Insulation Features
Structural
Insulation Location
2x4 Wall,2x6 Wall,Attic,Basement,Crawlspace,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-Value
R7.7
Insulation Type
Foam Board Insulation
Interior/Exterior
Interior/Exterior
Number of Pieces
1
Product Weight (lb.)
5.4
Sheathing Size
8 ft. x 2 in. x 48 in.
Sheathing Type
EPS

Warranty / Certifications

Warranty Information
n/a

Questions & Answers

216Questions29Answers

Can inuse this to insulate my garage remodel to bedroom?

Asked by dirty April 14, 2021
3
Answers

I bought these to insulate my garage, they work great and easy to cut with a zip knife or a serrated knife, also insulated my hoop house bottom sides. material is easy to work with and helps controlling temperature and sound.

Will this work outside on the exterior concrete foundation?

Asked by Pete February 15, 2021
3
Answers

R-TECH can be used on either side of a concrete wall. Not sure about freezing pipes though. Suggest opening any doors to allow warm air get to pipes to avoid freezing. In short, increasing the R-Value of a wall will help keep cold from transferring through the wall.

Can i glue this to painted metal panel

Asked by ed February 3, 2021
3
Answers

Yes. You have styrofoam on one side and a metallic covering on the other. Choose your adhesive accordingly. Remembering that the metal will expand and contract with the temperature changes.

Can this be used to insulate a metal roof

Asked by Butterfly January 27, 2021
4
Answers

Yes it would work very well.I definitely would use it before anything else.

Can the coating be removed? I am not using it for insulation.

Asked by DIYer January 14, 2021
2
Answers

No.

Can the film be removed? I'm not using for insults.

Asked by DIYer January 14, 2021
4
Answers

Order it as unfaced. Have the Pro Desk call Insulfoam directly if they have any questions

Would this be very functional used on the basement ceiling, between the joists? I am looking at d...

Asked by Matt January 8, 2021
3
Answers

Matt, not sure what you mean by "functional". Is your intent to insulate the room above from a cold basement below? This 2" rigid foam insulation has an R value of 7.7, which is "good". Not as good as 8" of R 30 fiberglass batt insulation, but that is not the way you want to go. The 2 IN. X 4 FT. X 8 FT. R-7.7 RIGID FOAM INSULATION should be easy and quick to install, but you will have to trim it to fit between the floor joists. Not a big deal. And yes, the insulation will be functional. If you are painting it, it does not matter which side faces out.

Can i use it on my boat?

Asked by Meharris November 26, 2020
2
Answers

Depends on how. R-Tech can be used for many DIY projects. Without more details can't really determine if it can be used on a boat. Might look at manufactures website as there are details on R-Techs uses. As well as contact information.

Can I use this insulation for a dog house

Asked by whittier November 13, 2020
3
Answers

Yes, absolutely

1) Does this need to be covered? 2) Shiny side facing in or out? This will be for a detached gara...

Asked by Sharma November 10, 2020
2
Answers

We installed with shiny side facing in to reflect heat inward. Works very well. But the silver side also seemed to block full wifi, so we needed to remove it between two of our rooms.

2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation - page 2

Customer Reviews

  • 4.8
    out of 161 reviews
  • 93% recommend this product
Filter by:
Showing 1-10 of 161 reviews
I made to window valence with it and I was able to cover it with fabric securely.
I made to window valence with it and I was able to cover it with fabric securely.
by DIYLady
Easy to work with and lightweight. Using it in my cargo vehicle I'm building out as an RV. An ele...
Easy to work with and lightweight. Using it in my cargo vehicle I'm building out as an RV. An electric 'hot knife' makes it cut like butter and cuts can be very precise for a tight fit (though it smells like burning plastic when it's being melted by the hot knife).
by SEIBHC
1 person found this helpful
Great for DIY craft projects. I wanted huge 42 inch round and 52 * 32 inch oval foam boards for a...
Great for DIY craft projects. I wanted huge 42 inch round and 52 * 32 inch oval foam boards for a craft project. I found this insulation board in Home Depot store at Monterey hwy SanJose but was not sure how to cut it in the required shapes, also it was not possible to carry the huge foam board in the car if it was not cut into manageable sizes in store. Konstantine, a store associate there, was very kind to help me cut the foam board in perfect oval and round shapes. Many Thanks to him and other store associates who were very helpful.
by Craftsy
5 people found this helpful
It is a little messy to work with, but I felt it was worth it in the long run. I measured and cut...
It is a little messy to work with, but I felt it was worth it in the long run. I measured and cut it with a small porcelain knife. I felt a saw would make a bigger mess, and I was just using it for a SHE SHED, lol. I only needed a broom for clean up, and it seems to be keeping the temp reasonable even though it is winter.
by Bunny
7 people found this helpful
We are Commercial Mechanical Insulators. This product is readily available and meets our specifi...
We are Commercial Mechanical Insulators. This product is readily available and meets our specification requirements and is about 2/3 the cost we would normally pay going through our distributors. All the required product data is available on the Home Depot website for use in our Insulation Submittal Packages.
by Dave
9 people found this helpful
Easy to cut to fit what I needed it to....
Easy to cut to fit what I needed it to.
by Wheeler
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
worked great for what i needed...
worked great for what i needed
by JEREMY
Insulated solar battery box. Easy to work with....
Insulated solar battery box. Easy to work with.
by HomeDepotCustomer
don't know yet, it's part of a floor onstruct which will see a lot of traffic, Won't know for a ...
don't know yet, it's part of a floor onstruct which will see a lot of traffic, Won't know for a year or so
by na
Showing 1-10 of 161 reviews