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Grace Tri-Flex 15 Synthetic Roofing Underlayment 7 mil, 48" x 250' Roll (1,000 Sq. Ft.)

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    Product Description

    Tri-Flex® 15 synthetic underlayment exceeds the requirements of ASTM D226 type I and II and offers the benefits of a synthetic to traditional #15 felt users. Its higher coverage per roll means it goes down quickly. Because it is 10x stronger than #15 felt, costly blow offs are prevented. The product is mechanically fastened and may be used in conjunction with GCP self-adhered underlayments or alone.

    It is totally recyclable, and contains post industrial recycled polymers, so it contributes to sustainabiliy and LEED.

    Tri-Flex® 15 underlayment acts as a secondary watershedding material below mechanically attached roof coverings. The product may be exposed for up to 60 days and may be used with asphalt shingles and most other roof coverings.

    Tri-Flex® 15 underlayment is an engineered woven fabric, coated on both sides with polypropylene. The proprietary resin formula used in the walk and deckside surfaces create a slip resistant surface.

    Tri-Flex® 15 underlayment is available in 10 sq rolls (48 in. wide x 250 long). Thickness - 7 mils

    Product Advantages:

    • Improved Slip Resistant Coating
    • Lighter and covers more area
    • Stronger and more durable
    • Facilitates faster and easier installation
    • Suitable for use under all major roof coverings
    • Custom Logo Printing Available
    • 25 Year Warranty

    Features & Benefits:

    Major benefits of Tri-Flex® 15 underlayment vs #15 felt include:

    • Stronger - Its 10x stronger and prevents blow o s and tears in windy conditions
    • Higher Coverage per Roll - A 10 sq roll is 67% lighter than #15 felt, and covers 2.3 times the area
    • Fewer Laps and Fasteners - 30% more coverage per side lap than felt
    • Sustainable - Tri-Flex® 15 underlayment is 100% recyclable, and contains post industrial recycled materials, and contributes to sustainability and LEED
    • Excellent temporary dry in - May be exposed for up to 60 days
    • Versatile - Suitable for use under asphalt shingles and most other major roof coverings
    • Custom Logo Available - The product can printed with a customer logo. Minimum order amounts apply. Please contact the GCP sales representative for details.
    • Local technical support - Tri-Flex® 15 underlayment is backed by a team of local technical support personnel that help ensure every application goes smoothly.


    General Characteristics

    Performance Properties:
    Color (front/back)
    Weight20 lbs (10 sq roll)
    Tear strengthMD 36 lbs; CD 36 lbsASTM D4533
    Accelerated agingPass (no damage, cracking, chipping)ICC-ES AC48
    Ultraviolet resistancePass (no peeling, chipping, cracking, flaking)ICC-ES AC48
    Water pondingPass (no percolation)ASTM D779
    PliabilityPass (no cracks)ASTM D226
    Water transmissionPassASTM D4869
    Tensile strengthMD 66 lbs; CD 49 lbsASTM D828
    Thickness7 milsASTM D3767
    Product Questions

    Product Questions

    Is Triflex an approved underlayment for under painted steel roof panels?
    is this product fastened with staples as is tar paper and other house wrap products?
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