Internet #202532854

Model # 320821

Store SKU #614637

0732813100072

R-Tech

1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing

  • Easy to cut, split and install
  • Energy Star qualified
  • 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing
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Frequently Bought Together

Frequently Bought Together

Product Overview

  • Easy to cut, split and install
  • Energy Star qualified
  • 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing
R-Tech 1 in. x 4 ft. x 8 ft. Insulation Sheathing cuts easily to size. Facilitating its installation as wall sheathing, basement and foundation insulation or siding underlayment. This product meets federal guidelines for energy efficiency.
  • Designed for use as wall sheathing, basement and foundation insulation or siding underlayment
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Cuts easily to size to make installation a snap
  • Poly-facer on both sides for flexibility and durability
  • Moisture-resistant design to help maintain a water-tight seal
  • Note: Product may vary by store



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

Product Overview

  • Easy to cut, split and install
  • Energy Star qualified
  • 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing
Model #: 320821
Sku #: 614637
Internet #: 202532854

R-Tech 1 in. x 4 ft. x 8 ft. Insulation Sheathing cuts easily to size. Facilitating its installation as wall sheathing, basement and foundation insulation or siding underlayment. This product meets federal guidelines for energy efficiency.

  • Designed for use as wall sheathing, basement and foundation insulation or siding underlayment
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Cuts easily to size to make installation a snap
  • Poly-facer on both sides for flexibility and durability
  • Moisture-resistant design to help maintain a water-tight seal
  • Note: Product may vary by store



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

Info & Guides

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Compare Similar

Compare Similar Products
Brand Project Panels R-Tech Thermasheath Owens Corning
Name FOAMULAR 1 in. x 2 ft. x 2 ft. R-5 Small Projects Rigid Pink Foam Board Insulation Sheathing 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing Rmax Thermasheath-3 1 in. x 4 ft. x 8 ft. R-6 Polyisocyanurate Rigid Foam Insulation Board FOAMULAR 150 1 in. x 4 ft. x 8 ft. R-5 Scored Square Edge Rigid Foam Board Insulation Sheathing
Price
$5.98
$12.58
$20.98
$23.00
Ratings (113) (143) (77) (186)
Sheathing Type XPS EPS ISO XPS
Insulation Location Garage 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab 2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Ducts,Exterior Sheathing,Garage,Re-Siding 2x4 Walls,2x6 Walls,Exterior Sheathing
Product Width (in.) 24 in 48 in 48 in 48 in
Product Length (ft.) 2 ft 8 ft 8 ft 8 ft
Faced or Unfaced Unfaced Faced Faced Unfaced
Product Thickness (in.) 1 in 1 in 1 in 1 in
View Product View Product View Product View Product

Specifications

Dimensions

Coverage Area (sq. ft.)
32
Product Length (ft.)
8 ft
Product Thickness (in.)
1 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
R3.85
Insulation Type
Foam Board Insulation
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
2.7lb
Sheathing Type
EPS

Warranty / Certifications

Warranty Information
N/A

Specifications

Dimensions

Coverage Area (sq. ft.)
32
Product Length (ft.)
8 ft
Product Thickness (in.)
1 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
R3.85
Insulation Type
Foam Board Insulation
Interior/Exterior
Interior/Exterior
Product Weight (lb.)
2.7lb
Sheathing Type
EPS

Warranty / Certifications

Warranty Information
N/A

Questions & Answers

Can this product be used on a ceiling in a garage and how is it fastened

Can this product be used on a ceiling in a garage and how is it fastened
Asked by: ozzy
Yes it can. I put it in my shop ceiling but I covered it up with particle board ceiling below it.
Answered by: lvsloan1
Date published: 2019-02-07

can I use this on a garage door panel?

can I use this on a garage door panel?
Asked by: gr
Yes, I have used it on garage doors, I use an sharp knife (drywall type) and an t-square, good luck on your project.
Answered by: nokosi
Date published: 2018-12-04

We need to insulate aluminum utility room walls. Will this product work with adhesive and reall...

We need to insulate aluminum utility room walls. Will this product work with adhesive and really reduce the heat in there?
Asked by: FlaCharlie
To clarify Bill's answer - you would only need to use spray adhesive on a flat surface in a very humid environment, where trapped moisture could promote mold growth when the outside temp is low enough to condense water vapor between the outer shell and insulating foam boards.
Answered by: BadBat
Date published: 2018-09-17

I have a metal ribbed roof that the top panel blew off during the last hurricane. There was styrafoam in between. Will this work to replace it?

Asked by: Tom
Yes it should - any closed-cell foam board should work (closed-cell = no water absorption)
Answered by: IdahoMountains
Date published: 2018-02-27
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Customer Reviews

1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing is rated 4.7 out of 5 by 143.
Rated 5 out of 5 by from I use these sheets as packaging material for when I... I use these sheets as packaging material for when I need to ship artwork. They also come in handy blocking the sun from windows that get too much light during the summer and are easy to work with and priced great for many different applications.
Date published: 2019-03-26
Rated 5 out of 5 by from I used this to insulate the aluminum roof of my... I used this to insulate the aluminum roof of my patio. I live in Florida, and the roof gets extremely hot. This made a wonderful difference. Very pleased.
Date published: 2019-06-04
Rated 5 out of 5 by from I used this product to insulate my garage door, the sun hits the door in the morning it made a bi... I used this product to insulate my garage door, the sun hits the door in the morning it made a big difference now the garage stays cooler.
Date published: 2019-05-30
Rated 5 out of 5 by from As expected true to size, really like register marks on... As expected true to size, really like register marks on back cover as aid to accurate cuts for proper sizes
Date published: 2019-05-07
Rated 5 out of 5 by from Great stuff used it to insulate my cargo trailer, my... Great stuff used it to insulate my cargo trailer, my local store does not cut the pieces down for transport
Date published: 2019-05-15
Rated 5 out of 5 by from R tech sheathing is very easy to cut and does... R tech sheathing is very easy to cut and does it's job great insulation I'm going to buy more.
Date published: 2019-05-01
Rated 4 out of 5 by from It was the perfect backboard for "Bra Pong" and a... It was the perfect backboard for "Bra Pong" and a cheap way to get it done too !!!
Date published: 2019-04-30
Rated 3 out of 5 by from I thought it would cool better then it does.. ... I thought it would cool better then it does.. its better then nothing tho.
Date published: 2019-05-17
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