Model # 320821

Internet #202532854

Store SKU #614637

R-Tech 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing
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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Name 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing 1-1/2 in. x 4 ft. x 8 ft. R-5.78 Rigid Foam Insulation 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
$11.99
$14.15
$17.96
$19.98
Ratings (113) (85) (73) (159)
Sheathing Type EPS EPS ISO XPS
Insulation Location 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 2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Ducts,Exterior Sheathing,Garage,Re-Siding 2x4 Walls,2x6 Walls,Exterior Sheathing
Product Width (in.) 48 in 48 in 48 in 48 in
Product Length (ft.) 8 ft 8 ft 8 ft 8 ft
Faced or Unfaced Faced Faced Faced Unfaced
Product Thickness (in.) 1 in 1.5 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 113.
Rated 4 out of 5 by from Put it on the garage doors .It works great ... Put it on the garage doors .It works great
Date published: 2018-12-28
Rated 4 out of 5 by from I have used this material for home insulation for several... I have used this material for home insulation for several years. It is inexpensive, and effective in many applications. I noted that it is now available in 2 inch thickness also. I will likely use this also.
Date published: 2019-02-07
Rated 5 out of 5 by from I used this to create little enclosures for my outdoor... I used this to create little enclosures for my outdoor barn kitties. I cut it into pieces to fit into plastic totes and the outdoor kitties immediately loved their warm little mini-barns. :)
Date published: 2019-01-01
Rated 5 out of 5 by from Durable sheathing covering foam insulation and easy to cut and... Durable sheathing covering foam insulation and easy to cut and size as the sheets have markings on backside. Price remains a little high for merely foam covered in plastic and thin tin foil.
Date published: 2019-02-05
Rated 4 out of 5 by from I used this to insulate my garage door since it... I used this to insulate my garage door since it faces the hot afternoon sun. I can already feel a difference in the temperature. Excellent value
Date published: 2019-03-05
Rated 5 out of 5 by from Used to insulate the garage door on our pole building/shop.... Used to insulate the garage door on our pole building/shop. Easy to cut to fit and made a noticeable difference in the heating of it.
Date published: 2019-02-07
Rated 5 out of 5 by from It worked for what I needed. Easy to use... It worked for what I needed. Easy to use and cut - used for insulating an outside door.
Date published: 2019-03-12
Rated 5 out of 5 by from It works really well and is easy to handle and... It works really well and is easy to handle and cut. The pricing was quite acceptable too
Date published: 2019-03-05
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