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 Squared Edge Insulating Sheathing
0748232100036

Owens Corning

FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing

  • Film faced for damage resistance, easy to handle, cut and install
  • Compressive strength of 15 psi, R-value of 3
  • Lifetime Limited Warranty for the life of the home
$1447 /each

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

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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Specifications

Dimensions

Details

Warranty / Certifications

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Customer Questions & Answers

Does this come in white? Can I paint on it with acrylic paint?

Does this come in white? Can I paint on it with acrylic paint?
Asked by: Mary
Hi Mary! Foamular is only available in pink. If being used for crafts, oil-based and latex paints can be used with Foamular products. If being used in an interior construction application, painting the Foamular is not recommended as it will need to be covered by a 15 minute thermal barrier such as drywall. Thank you for your inquiry!Thank you for your inquiry!
Answered by: OwensCorning
Date published: 2017-05-22

Can Foamar be used to insulate the opening behind the return air grille on our central HVAC unit?

The velocity of the air flowing thru the return air grill is very noisy. Our home was built in the 60s, and return air opening (behind grill) consists of our concrete slab, exposed 2x4s and the cast iron pipe where condensate drains into. We are trying to reduce annoying noise coming thru return air grille.
Asked by: Texasgirl
Hello Texasgirl! Foamular is not designed for this type of application. Thank you for your inquiry!
Answered by: OwensCorning
Date published: 2017-05-22

Can I use fiberglass on top of this and then sheetrock?

Can I use fiberglass on top of this and then sheetrock?
Asked by: Monica
Yes; in fact, this would be a typical installation for a basement wall. I would, however, use more than 1/2" if possible; 2" would be better. It also wouldn't hurt to tape the seams using house wrap tape.
Answered by: JeremyR
Date published: 2017-02-06

Can I stack 10 of these to get R-30 in a 5" space? Or is there a more sensible way to accomplish this?

Asked by: space5
You can do this, although a more sensible way is to stack the 2"- and/or 1"-thick products. Or, depending on the application, closed-cell spray foam may be more cost-effective.
Answered by: JeremyR
Date published: 2016-12-08
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Customer Reviews

FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing is rated 4.6 out of 5 by 8.
Rated 5 out of 5 by from purchased to insulate inside wall used this product to insulate inside walls of remodel room. helped to cool off room and helped make it a little more quiet as well.
Date published: 2013-06-21
Rated 5 out of 5 by from Used for new application Used this to temporarily cover a hole in the ceiling while we wait for spring to do roof repairs. Board very light, easy to screw into studs, completely waterproof. Much easier to use than plywood or drywall and much sturdier than a plastic sheet! Also kept the room warm!
Date published: 2014-03-12
Rated 5 out of 5 by from foam sheeting I love this stuff, it has a great color! I love pink, but seriously, this stuff is as soothing to place against a wall as it is too look at! It seals perfectly, last forever, and is so cleanto work with. We love using this for all our insulating work, and prefer it for the price to the other options. We have a notable difference in the heating and cooling benifits it makes, and our lives are richer because of the clean and effective insulating factor it has.
Date published: 2010-08-23
Rated 4 out of 5 by from Good for art! My school uses them to do the big art fair and they can be used more than one year in a row. Very durable!
Date published: 2016-03-19
Rated 4 out of 5 by from great for a model railroad This insulation is great for a base for a model railroad. Make sure you pull the lamination sheet off first. That comes off easily. It is easy to work with and easy to cut.
Date published: 2011-12-27
Rated 4 out of 5 by from XCELLENT FOAMY RC AIRPLANE STUFF THIS STUFF IS GREAT FOR ANYBODY INTERESTED IN MAKING A FUN RC AIRCRAFT. LET YOUR IMAGINATION GO WILD. CHEAP AND EASY TO FIX.
Date published: 2011-11-25
Rated 5 out of 5 by from can be used in so many ways Cover boards with your choice of damask fabric and hang on wall for a custom art piece. So cool .
Date published: 2013-06-20
Rated 5 out of 5 by from Used for birthday party decorations I bought 3 of these sheets for my sons first birthday party! It was a jungle/safari themed and I sent them out to my friends bf to paint some animals. He did a mural/background typed n I used it as a backdrop for the chocolate fountain table. The other two were giraffes that I put on bushes since the party was on our backyard. This year doing a Mickey Mouse themed n I'm going to buy some of these sheets!!
Date published: 2013-03-19
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