Westlake Royal MetalSeal HT Underlayment is a polymer modified bituminous sheet material intended for use as underlayment. Underlayment is manufactured as a polyester, non-woven fabric surface coated with a self-adhering modified asphalt. Underlayment rolls have approximate dimensions of 71.3ft x 3ft. Underlayment is self-adhered.</p><p><strong>Ratings</strong></p><p><span style="text-decoration: underline"><strong>ASTM D1970<br></strong></span>Product&nbsp;has met specification requirements of ASTM D1970.</p><p><span style="text-decoration: underline"><strong>ASTM E108 (Fire)<br></strong></span>Product has met Class A requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers of asphalt shingles (ASTM D3462), clay tiles (ASTM C1167), concrete tiles (ASTM C1492), or slate shingles (ASTM C406). Slope is unlimited.</p><p>Product has met Class C requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers of metal shingles or metal panels. Slope is unlimited.</p>" />

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Validated Products
Attributes
  • Listee
    • Westlake Royal Roofing
  • Manufacturer Location
    • Brentwood, NH
  • Category
    • Roofing Material
  • SubCategory
    • Underlayment
  • Certification(s)
    • ASTM D1970
    • ASTM E108 Class A
Documents

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Westlake Royal MetalSeal HT Underlayment is a polymer modified bituminous sheet material intended for m88 casino use as underlayment. Underlayment is manufactured as a polyester, non-woven fabric surface coated with a self-adhering modified asphalt. Underlayment rolls have approximate dimensions of 71.3ft x 3ft. Underlayment is self-adhered.

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ASTM D1970
Product has met specification requirements of ASTM D1970.

ASTM E108 (Fire)
Product has met Class A requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers m88 casino review of asphalt shingles (ASTM D3462), clay tiles (ASTM C1167), concrete tiles (ASTM C1492), or slate shingles (ASTM C406). Slope is unlimited.

Product has met Class C requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers of metal shingles or metal panels. Slope is unlimited.