Owens Corning

Model 91BG

Internet #100320357

Store SKU #815407

Store SO SKU #192627

FOAMULAR 250 1 in. x 4 ft. x 8 ft. R-5 Squared Edge Insulation Sheathing

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Product Overview

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 in. x 4 ft. x 8 ft.
  • Application: Exterior Foundation Walls, Underslab, Foundations and Crawlspaces
  • 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
  • Note: Product may vary by store
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

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Customer Questions & Answers

FOAMULAR 250 1 in. x 4 ft. x 8 ft. R-5 Squared Edge Insulation Sheathing
FOAMULAR 250 1 in. x 4 ft. x 8 ft. R-5 Squared Edge Insulation Sheathing

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2 answers

Could I use Owens Corning FOAMULAR on my garage ceiling instead of drywall?

This question is from FOAMULAR 250 1 in. x 4 ft. x 8 ft. R-5 Squared Edge Insulation Sheathing
Asked by
Tucson, AZ
August 30, 2013
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Asked by
Salt Lake City, UT
Read all my Q&A
October 30, 2013
If your garage is attached, you'd need to cover the insulation with a "fire barrier" material such as drywall anyway, as XPS is flammable. In a detached garage, you MIGHT not need the fire barrier, but only your local building inspector can say for sure.
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September 3, 2013
Foamular must always be covered by some type of 15 minute thermal barrier, such as drywall or OSB board. It can not be used in the place of drywall.
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Customer Reviews

Rated 5.0 out of 5 by 1 reviewer.
Rated 5.0 out of 5.0 by GREAT FOR MODEL RAILROAD CONSTRUCTION!!! It may be sold as insulation, but it's the ONLY sheet foam product you want to use for hobby projects! Lightweight and quite strong, it cuts and shapes easily - and without those annoying "sticky balls" that get all over everything when you use "white styrofoam" which is easier to find. This pink foam sheet is the first choice of serious model railroaders and model airplane builders, and even sculptors who do lightweight sculptures! January 7, 2012
  • 2016-08-20 T10:24:12.465-05:00
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