DuPont Styrofoam™

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DuPont™ Styrofoam™ Insulation (formerly known as Blue Board) is a rigid, closed-cell extruded polystyrene foam (XPS) board designed to deliver long-lasting thermal performance and moisture resistance. Trusted since 1941, this nonstructural insulation improves wall system energy efficiency by providing a continuous barrier that can increase effective R-values by up to 20%. Its high compressive strength and low water absorption make it ideal for both interior and exterior applications, helping protect underlying materials from damage.

For a high-performance air and moisture barrier system, pair Styrofoam™ boards with DuPont™ Styrofoam Brand Tape (Formerly known as Weathermate™ Construction Tape) to seal seams and Great Stuff™ Sealants to fill gaps and joints. These accessories work together to minimize air infiltration and maximize energy savings.

When attaching insulation to masonry surfaces, Plasti-Grip® PMF Plastic Masonry Fasteners offer a secure, thermally efficient solution. Available in a range of sizes, they’re easy to install and provide exceptional holding strength in concrete, block, and brick, making them perfect for residential and commercial applications alike.

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  • DuPont™ Styrofoam Brand Tape, 3.75" x 165 Feet
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    DuPont™ Styrofoam Brand Tape, 3.75" x 165 Feet

    Dupont
    $30.79
    Styrofoam Brand Construction Tape from DuPont™ is recommended to seal the joints and seams of WEATHERMATE™ house-wraps and STYROFOAM™ insulated sheathings. In these applications, Styrofoam Brand Construction Tape enhances...
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  • Styrofoam Brand Construction Tape 1 7/8" x 55 yds (165 ft)
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    DuPont™ Styrofoam Brand Tape, 1 7/8" x 165'

    Dupont
    $25.79
    Styrofoam Brand Construction Tape from DuPont™ is recommended to seal the joints and seams of WEATHERMATE™ house-wraps and STYROFOAM™ insulated sheathings. In these applications, Styrofoam Brand Construction Tape enhances...
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  • Several lengths available to accommodate foam thickness Several lengths available to accommodate foam thickness
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    Plasti-Grip PMF (Plastic Masonry Fastener), Choice of Sizes

    Rodenhouse
    $122.79 - $170.79
    Plasti-Grip® PMF (Plastic Masonry Fastener), Choice of Sizes Rodenhouse Plasti-Grip® Plastic Masonry Fasteners attach Dow Thermax, Roxul ComfortBoard, Styrofoam Blue Board, XPS, polyiso, mineral wool and other rigid insulation to concrete...
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    $122.79 - $170.79
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