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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Customers Also Compared These

Price
$10.98 /each
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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
Brand R-Tech R-Tech Thermasheath Owens Corning
Ratings (68) (58) (46) (91)
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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 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: 2018-07-31

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

I have a ceiling with unfaced fiberglass insulation. Can I use this product to serve as extra R value and vapor barrier?

Or do I need to add a vapor such as 6 mil poly along with this?
Asked by: Tim
See www.insulfoam.com. At menu select application use, or other use.
Answered by: Linda
Date published: 2018-11-08
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Customer Reviews

1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing is rated 4.6 out of 5 by 68.
Rated 5 out of 5 by from did the job ... did the job
Date published: 2018-11-06
Rated 5 out of 5 by from Easy to install and light weight... Easy to install and light weight
Date published: 2018-10-30
Rated 4 out of 5 by from I noticed an increase in my basement temperature almost instantly... I noticed an increase in my basement temperature almost instantly once the basement was covered, even having a couple walls addd 2-3 degrees. I would say now that they're all up somewhere in the 8-10 range. Do your self a favor and get HVAC tape to seal the edges and connect the pieces together. Liquid nails worked the best for me to put this on a block wall with the killz painted on it.
Date published: 2018-10-30
Rated 5 out of 5 by from This product will insulate attic space, and size of material... This product will insulate attic space, and size of material can provide 4 separate applications.
Date published: 2018-10-23
Rated 5 out of 5 by from Good product for the price Good product for the price
Date published: 2018-10-23
Rated 5 out of 5 by from Exactly what I anticipated- no complaints- delivered promptly... Exactly what I anticipated- no complaints- delivered promptly
Date published: 2018-10-16
Rated 5 out of 5 by from It's what the doc ordered, especially $-wise, circa $12 each. Used these to buffer the pole-barn... It's what the doc ordered, especially $-wise, circa $12 each. Used these to buffer the pole-barn boards and poles ahead of a concrete pour. Although, some might do 2", or even 3" in certain areas, you get what you can pay $$$ for! Straight blades work for fairly clean results, but for a much better finished edge, I occasionally used an Dewalt oscillating tool with a grinder-sharpened "scraper" blade to cut smooth edges like butter, literally.
Date published: 2018-10-16
Rated 5 out of 5 by from Used it to make valances for windows and it was... Used it to make valances for windows and it was excellent! Sturdy, yet easy to cut and pin fabric to.
Date published: 2018-10-16
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