Model # 36L

Internet #100320356

Store SKU #409923

Store SO SKU #192627

Owens Corning FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Square Edge Rigid Foam Board Insulation Sheathing
0748232100036

Owens Corning

FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Square Edge Rigid Foam Board Insulation Sheathing

  • Saves energy and resists moisuture with limited lifetime warranty
  • Blocks mildew, corrosion and rot; easy to cut and install
  • Closed cell XPS foam panel can be layered for more cost savings
$ 14 90
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Frequently Bought Together

Frequently Bought Together

Product Overview

Choosing The Right Insulation

Faced Insulation

Faced

Face insulation uses kraft paper vapor barrier to control moisture transmission between 
walls and floors 

*Check your local building code for requirements
Unfaced Insulation

Unfaced

Unfaced insulation does not have a vapor barrier; used over existing insulation in the attic, or where moisture control is not needed

Rolls Insulation

Rolls

Continuous rolls are easy to transport and can be cut to length; great for large areas

Batts Insulation

Batts

Come in pre-cut lengths for faster installation and each package contains more square feet than rolls; ideal for framed cavities

Blow-In Insulation

Blow-In Insulation

Installed using blowing machines, best for adding additional insulation in attic

Regional R-Values

Regional R-Values Map

The Department of Energy recommends different insulation
levels based on regional climate zones to increase energy efficiency

Map key with insulation type based on region
  • Saves energy and resists moisuture with limited lifetime warranty
  • Blocks mildew, corrosion and rot; easy to cut and install
  • Closed cell XPS foam panel can be layered for more cost savings
FOAMULAR Extruded Polystyrene (XPS) Rigid Foam Insulation offers a comprehensive line of products in a wide choice of sizes, thicknesses and edges with a Lifetime Limited Warranty for the life of the home or building. The products are easy to handle, score, cut and install & no special tools are needed. Products can be used on wood, steel framing or concrete walls. FOAMULAR XPS resists moisture and retains R-value even after exposure to standing water and wet soil. Only XPS foam to be GREENGUARD Gold Certified and the first XPS foam certified by Scientific Certification Systems (SCS) to contain a minimum of 20 percent recycled content.
  • Dimensions: 1/2 in. x 4 ft. x 8 ft.
  • Application: Exterior above grade walls, underneath vinyl siding / claddings
  • Closed cell rigid foam board, designed to resist moisture and helps to block mildew
  • Has a higher R-value than wood fiber, plywood or 1/2 in. gypsum board products



Product Overview

  • Saves energy and resists moisuture with limited lifetime warranty
  • Blocks mildew, corrosion and rot; easy to cut and install
  • Closed cell XPS foam panel can be layered for more cost savings
Model #: 36L
Sku #: 409923
Internet #: 100320356

FOAMULAR Extruded Polystyrene (XPS) Rigid Foam Insulation offers a comprehensive line of products in a wide choice of sizes, thicknesses and edges with a Lifetime Limited Warranty for the life of the home or building. The products are easy to handle, score, cut and install & no special tools are needed. Products can be used on wood, steel framing or concrete walls. FOAMULAR XPS resists moisture and retains R-value even after exposure to standing water and wet soil. Only XPS foam to be GREENGUARD Gold Certified and the first XPS foam certified by Scientific Certification Systems (SCS) to contain a minimum of 20 percent recycled content.

  • Dimensions: 1/2 in. x 4 ft. x 8 ft.
  • Application: Exterior above grade walls, underneath vinyl siding / claddings
  • Closed cell rigid foam board, designed to resist moisture and helps to block mildew
  • Has a higher R-value than wood fiber, plywood or 1/2 in. gypsum board products



Info & Guides

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Brand R-Matte Owens Corning R-Tech Owens Corning
Name Rmax R-Matte Plus-3 1/2 in. x 4 ft. x 8 ft. R-3.2 Polyisocyanurate Rigid Foam Insulation Board FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Square Edge Rigid Foam Board Insulation Sheathing 1 in. x 4 ft. x 8 ft. R-3.85 Insulating Sheathing FOAMULAR 150 1 in. x 4 ft. x 8 ft. R-5 Scored Square Edge Rigid Foam Board Insulation Sheathing
Price
$9.98
$11.98
$16.25
$19.98
Ratings (85) (77) (113) (159)
Sheathing Type ISO XPS EPS XPS
Insulation Location 2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding 2x4 Walls,2x6 Walls,Exterior Sheathing 2x4 Walls,2x6 Walls,Attics,Basements,Crawlspaces,Exterior Sheathing,Exterior Wall Foundation,Garage,Under Slab 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.) .5 in .5 in 1 in 1 in
View Product View Product View Product View Product

Specifications

Dimensions

Coverage Area (sq. ft.)
32 ft²
Product Length (ft.)
8 ft
Product Thickness (in.)
.5 in
Product Width (in.)
48 in

Details

Faced or Unfaced
Faced
Insulation Features
Formaldehyde Free,Vapor Retardant
Insulation Location
2x4 Walls,2x6 Walls,Exterior Sheathing
Insulation R-Value
R3
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Product Weight (lb.)
2.7 lb
Sheathing Type
XPS

Warranty / Certifications

Warranty Information
Lifetime Limited

Specifications

Dimensions

Coverage Area (sq. ft.)
32 ft²
Product Length (ft.)
8 ft
Product Thickness (in.)
.5 in
Product Width (in.)
48 in

Details

Faced or Unfaced
Faced
Insulation Features
Formaldehyde Free,Vapor Retardant
Insulation Location
2x4 Walls,2x6 Walls,Exterior Sheathing
Insulation R-Value
R3
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Product Weight (lb.)
2.7 lb
Sheathing Type
XPS

Warranty / Certifications

Warranty Information
Lifetime Limited

Questions & Answers

Can this insulation be used to insulate a 8x12 storage shed?

Can this insulation be used to insulate a 8x12 storage shed?
Asked by: PlatoonSgt
Yes, you can use this insulation for such a purpose so long as you install it properly.
Answered by: CommunityAnswer
Date published: 2019-01-25

Can it be installed before insulation and drycwall on remidel home.

We are doing a remodel. Can we put this up between studs before we install the insulation and dry wall ?
Asked by: Okie
It is meant to be placed under siding on the outside of the plywood. It is just extra insulation. Not meant for in between studs.
Answered by: Paulette
Date published: 2018-01-06

can it be used under vinyl flooring?

Asked by: paul
I would think not. It is 2" thick and is somewhat compressible but it will permanently deform, not bounce back, so no I would not pout it under a floor that is itself, resilient. Rob
Answered by: Rob
Date published: 2018-09-18

Where can I find this?? I’ve been to 5 different states and have not had luck finding this!!

Asked by: Keri
Setup your location in homedepot.com and or call the store if they have it.
Answered by: Gilbertfg
Date published: 2018-08-16
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Customer Reviews

FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Square Edge Rigid Foam Board Insulation Sheathing is rated 4.7 out of 5 by 77.
Rated 5 out of 5 by from Cut this down and made poster board backers. Then I... Cut this down and made poster board backers. Then I glued the posters to it and used black paint on the edges.Look great.
Date published: 2019-02-06
Rated 5 out of 5 by from Its all I could fit in the space.. Wish I could have used the 2 inch thick wasn't that much more.... Its all I could fit in the space.. Wish I could have used the 2 inch thick wasn't that much more. Kind of like working with drywall in cutting it, easy . scribe, bend then cut the thin plastic.
Date published: 2019-01-23
Rated 4 out of 5 by from Good Stuff! Easy to work with and cut. It has a film over it. You can't see it but be careful cut... Good Stuff! Easy to work with and cut. It has a film over it. You can't see it but be careful cutting because if you don't cut through the film it will peel off.
Date published: 2019-01-02
Rated 5 out of 5 by from Used to insulate cold basement during the winter and after... Used to insulate cold basement during the winter and after insulation and drywall immediately felt the difference in the basement from being cold to warmer.
Date published: 2019-03-19
Rated 5 out of 5 by from I don’t use it as insulation. I line shipping... I don’t use it as insulation. I line shipping boxes with it to increase the cushioning protection of the items I am shipping. It works well.
Date published: 2019-02-06
Rated 5 out of 5 by from Using this as an additional moisture barrier in the basement.... Using this as an additional moisture barrier in the basement. Works great, easy to install.
Date published: 2018-12-26
Rated 5 out of 5 by from Easy to cut and not messy like other foam products.... Easy to cut and not messy like other foam products. Worked great for winterizing!
Date published: 2019-01-01
Rated 5 out of 5 by from Great product. Easy to install. Would definitely recommend this product. Great product. Easy to install. Would definitely recommend this product.
Date published: 2019-02-12
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