Model # 310891

Internet #202532856

Store SKU #614653

R-Tech 2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation
0732813100089

R-Tech

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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Frequently Bought Together

Frequently Bought Together

Product Overview

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



  • How much do you need? Let our calculator help:
    Insulation calculator button

Product Overview

  • Lightweight, easy to use
  • Multiple thicknesses
  • 2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation
Model #: 310891
Sku #: 614653
Internet #: 202532856

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



  • How much do you need? Let our calculator help:
    Insulation calculator button

Info & Guides

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Customers Also Compared These

Compare Similar Products
Brand Owens Corning R-Tech R-Tech
Name FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing 1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing
Price
$36.58
$14.86
$12.58
Ratings (186) (84) (113)
Sheathing Type XPS EPS EPS
Insulation Location Exterior Sheathing,Exterior Wall Foundation,Under Slab 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Product Width (in.) 48 in 48 in 48 in
Product Length (ft.) 8 ft 8 ft 8 ft
Faced or Unfaced Unfaced Faced Faced
Product Thickness (in.) 2 in 1.5 in 1 in
View Product View Product View Product

Specifications

Dimensions

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

Details

Faced or Unfaced
Faced
Insulation Features
Structural
Insulation Location
2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-Value
R7.7
Insulation Type
Foam Board Insulation
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
5.4lb
Sheathing Type
EPS

Warranty / Certifications

Warranty Information
n/a

Specifications

Dimensions

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

Details

Faced or Unfaced
Faced
Insulation Features
Structural
Insulation Location
2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab
Insulation R-Value
R7.7
Insulation Type
Foam Board Insulation
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
5.4lb
Sheathing Type
EPS

Warranty / Certifications

Warranty Information
n/a

Questions & Answers

can this be used under a basement slab?

can this be used under a basement slab?
Asked by: crh
I would use it under a basement slab but NOT under any structural loads. So if a column or other load bears upon the slab, no.
Answered by: Bill
Date published: 2018-11-02

I want to use it to insulate a wall on my shed, my question is do I place the foil paper side fac...

I want to use it to insulate a wall on my shed, my question is do I place the foil paper side facing inside or facing Out? What is the correct way to use It? BTW, my wall won't have drywall installed on top of foam board
Asked by: Jaygeo2020
Silver to the inside
Answered by: jayram1408
Date published: 2019-02-10

Can this be used for a bed?

Can this be used for a bed?
Asked by: Rick
Not sure how you would use for a bed - as a foundation? Don't think it would work, would break and be a mess.
Answered by: Chickie
Date published: 2018-04-09

what is the best way to cut into varying widths

what is the best way to cut into varying widths
Asked by: tom
There are undoubtedly alternatives, but I used a cheap utility knife with a snap-off blade like this: https://www.homedepot.com/p/13-Point-Breakaway-Knife-66-0455-HDCU/202247083 It's cheap, and it's possible to extend the blade far enough to cut through the 2" thickness of the insulation. This stuff is messy; be prepared to add cleanup to your project timeline.
Answered by: halfdog
Date published: 2019-01-24
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Customer Reviews

2 in. x 4 ft. x 8 ft. R-7.7 Rigid Foam Insulation is rated 4.7 out of 5 by 93.
Rated 5 out of 5 by from I have begun insulating my basement with a poured foundation. I began with Owens Corning and of c... I have begun insulating my basement with a poured foundation. I began with Owens Corning and of course the cost was going up. It is a large future family room. After reading reviews on R-Tech I purchased around 10 sheets so far. I am completely sold. The R value is almost five points less than Corning but holding my hand on the sheets a while after installed it is warm. I used 2" on the exposed walls and 1 1/2" on undergrade walls. It is working our fine and I am saving $15.00 a sheet at Home Depot. Both sides of the sheet are covered with a plastic sealant one being the silver paper. It is easy to cut but use a long knife to keep it clean. I will be covering this with wool also so the room will be warm in winter and normal in summer. It will dent easy of hit hard but other than that this is the board to go with. Even if I used Corning I would have covered it with wool insulation. But what a barrier. I can get the benefit and save for other supplies.
Date published: 2019-01-11
Rated 5 out of 5 by from We used this as ‘skirting’ for an RV. It... We used this as ‘skirting’ for an RV. It worked great. It stopped all the wind in unexpected 20 degree weather in Arizona and our RV stayed at least 20 degrees warmer!
Date published: 2019-01-08
Rated 5 out of 5 by from Messy but worth it. I need to replace the basement windows, but this was a cheap, effective, and... Messy but worth it. I need to replace the basement windows, but this was a cheap, effective, and very easy solution. There is no give to the foam. I wanted a very snug fit so I wound up shaving a side down, that is what made for a messy job. The temperature difference was immediate. Lightweight but large. They let me cut it down in the store so I could get it in my car. I filled in around the edges with spray foam. Never again. Done with that stuff. A caulk would've been better.
Date published: 2019-03-05
Rated 5 out of 5 by from Needed 2" rigid foam board for my radiant floor heating project at my new home. The rating on th... Needed 2" rigid foam board for my radiant floor heating project at my new home. The rating on this fell in the range recommended by the heating floor company. VERY VERY pleased with it and the price was right!
Date published: 2019-01-22
Rated 5 out of 5 by from Easy to cut and work with, the foil side is... Easy to cut and work with, the foil side is a great radiant barrier and the other side is paintable for an application where panels were exposed
Date published: 2019-02-05
Rated 5 out of 5 by from I was very happy with this product because it was... I was very happy with this product because it was easy to handle and easy to cut and it provided the purpose I was hoping it would.
Date published: 2019-03-19
Rated 5 out of 5 by from This kind of insulation, it’s cheap but works perfectly. I... This kind of insulation, it’s cheap but works perfectly. I like to much.
Date published: 2019-03-12
Rated 5 out of 5 by from Nice and rigid. Easy to cut with a table saw. Nice and rigid. Easy to cut with a table saw.
Date published: 2019-01-29
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