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FOAMULAR 1/4 in. x 4 ft. x 50 ft. R-1 Fanfold Rigid Foam Board Insulation Sheathing

  • Saves energy and resists moisture with limited lifetime warranty
  • Reduce gaps and eliminate drafts with film faced uniform surface
  • Folded hinge at 24" intervals to ease application at job site
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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 and 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% recycled content.
  • Dimensions: 1/4 in. x 4 ft. x 50 ft.
  • Application: backer board for under new or replacement siding
  • Closed cell light weight foam board
  • Thermal performance of R1
  • Click here to shop Loctite foamboard adhesive
  • FOAMULAR 150 and 250 are available in various thicknesses and R-values, the difference is the compressive strength, FOAMULAR 150 has a compressive strength of 15 psi and FOAMULAR 250 is 25 psi
  • FOAMULAR is not rated for STC (sound transmission) and does not have any soundproofing properties. Owens Corning fiberglass batts and rolls are great options for acoustic applications.
  • When using FOAMULAR or any low perm insulation, always verify the moisture vapor flow and dew point characteristics of the wall system, please check your local building codes for vapor retarder/barrier information
  • Being used in an interior construction application, painting the FOAMULAR is not recommended as FOAMULAR cannot be left exposed and will need to be covered by a 15-minute thermal barrier such as drywall
  • If being used for crafts, acrylic or latex based paints can be used with FOAMULAR products
  • If you're looking to insulate your garage door, Owens Corning Garage Door Insulation Kit is an easy, fast and affordable way to keep your garage warm in winter and cool in the summer.
  • If you’re looking to ventilate your attic rafters, Owens Corning Raft-R-Mate is a XPS foam vent designed to assure unrestricted airflow from the soffit to the ridge vent.
  • FOAMULAR is available in two edge configurations:
  • Square edge - designed to fit flush next to adjoining boards
  • Scored Square Edge - comes with 3 factory scores, so that you can take a 4' sheet, break it in two and have two, 2' wide sheets (middle score) or you can break it into three 16" wide pieces by snapping at the left and right score.
  • Click here to shop Loctite foamboard adhesive
  • Click here to learn more about Eco Options and Energy Efficiency

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current product
FOAMULAR 1/4 in. x 4 ft. x 50 ft. R-1 Fanfold Rigid Foam Board Insulation Sheathing
BrandSilveRboardSTYRO IndustriesSilveRboardOwens Corning
Name0.625 in. x 48 in. x 24 in. 72 sq. ft. R-3 Graphite Radiant Barrier Wall Insulation Kit (9-Sheets/Kit)19 in. x 150 ft. Sticky Mesh Heavy Duty1 in. x 2 ft. x 48 in. R5 Radiant Acoustic Insulation Kit - STC 19 (12 sheets) - 96 sq. ft.FOAMULAR 1/4 in. x 4 ft. x 50 ft. R-1 Fanfold Rigid Foam Board Insulation Sheathing
Price
$5983
$8704
$8719
/package
Ratings
(19)
(56)
(257)
(108)
Product Thickness (in.)0.63 in0.08 in1 in0.25 in
Insulation Location2x4 Wall,2x6 Wall,2x8 Wall,Attic,Basement,Ceiling Insulation,Crawlspace,Exterior Sheathing,Garage,Metal Building,Re-SidingBasement,Ceiling Insulation,Exterior Sheathing,Exterior Wall,Exterior Wall Foundation,Interior Ceiling,Interior Wall,Wood Siding2x4 Wall,2x6 Wall,2x8 Wall,Attic,Basement,Ceiling Insulation,Exterior Sheathing,Garage,Interior Wall,Metal Building,Re-SidingRe-Siding
Insulation R-ValueR3.0 R5R1
Insulation FeaturesFormaldehyde Free,Moisture Retardant,Mold Resistant,Soundproofing Insulation,Vapor RetardantMold ResistantFormaldehyde Free,Vapor RetardantFormaldehyde Free
Faced or UnfacedFacedUnfacedFacedUnfaced
Pack Size91121
Sheathing TypeEPSEPSEPSXPS
Product Length (ft.)18 ft150 ft2 ft50 ft
Product Width (in.)48 in19 in48 in48 in
Insulation TypeFoam Board InsulationAccessoryFoam Board InsulationFoam Board Insulation
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Specifications

Dimensions

Cover Area Per Bag (sq. ft.)
200 ft²
Coverage Area (sq. ft.)
200 ft²
Product Length (ft.)
50 ft
Product Thickness (in.)
0.25 in
Product Width (in.)
48 in

Details

Compatible Install Surface
Concrete,Plywood,Wood
Faced or Unfaced
Unfaced
Insulation Features
Formaldehyde Free
Insulation Location
Re-Siding
Insulation R-Value
R1
Insulation Type
Foam Board Insulation
Interior/Exterior
Exterior
Number of Pieces
1
Pack Size
1
Product Weight (lb.)
13.2 lb
Sheathing Size
50 ft. x 0.25 in. x 48 in.
Sheathing Type
XPS

Warranty / Certifications

Warranty Information
Limited Lifetime

Questions & Answers

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Customer Reviews

  • 4.6
    out of 108 reviews
  • 100%recommend this product
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Showing 1-10 of 108 reviews
Easy to Install
This insulation has a uniform consistency and is easy to install. Its compact packaging makes it easy to transport. I used a staple gun and box cutter to install. I would buy again.
by
    • Recommended
    Product has a uniform consistency worked great
    Product has a uniform consistency worked great
    by
    • Verified Purchase
    • Recommended
    1 person found this helpful
    Easy and quick to install.
    Easy and quick to install.
    by
    • Verified Purchase
    • Recommended
    Worked great for my obscure purpose of insulating reptile tanks from the outside. Only complaint...
    Worked great for my obscure purpose of insulating reptile tanks from the outside. Only complaint is I wish it came in 2x4 pieces. Only need 6ea 2x4 sections. I still have 38 feet left LOL.
    by
    • Verified Purchase
    • Recommended
    5 people found this helpful
    by
      by
        Breaks apart a bit too easily... otherwise. Good!...
        Breaks apart a bit too easily... otherwise. Good!
        by
          by
            Anything to help winterizing
            Use on bottom of porch to make more weather proof
            by
            • Verified Purchase
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              Showing 1-10 of 108 reviews