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G.A.P. WaterGuard™️ Metal and Tile Synthetic Underlayment

Brand: G.A.P. Roofing, Inc

GAP WaterGuard AMT Architectural Metal & Tile Synthetic Roofing Underlayment is a polypropylene, two-side coated woven fabric containing a patented slip resistant surface (U.S. Patent # 7745353) 

Used as a secondary roofing protection, mechanically attached to the roof sheathing under the primary roofing material. 

Its “premium” performance allows for use under all standard types of roofing cladding.

Specifications

Rolls Per Pallet

  • 30

Pallets Per Truck

  • 42

Weight

  • 31 lbs

Size

  • 48” x 250'

Thickness

  • 10 mils

Coverage

  • 1000 SF

Mullen Burst (ASTM D3786)

  • 250 psi (1725 kPa)

Slip Resistance (ASTM 1679)

  • > 1 (Tribometer)

Grab Tensile (ASTM D5034)

  • MD 170 lb (756 N) / CD 130 lb (578 N)

Strip Tensile (ASTM D5035) – N/5cm

  • MD 120 lb (1052 N) / CD 85 lb (745 N)

Tensile Elongation (ASTM D5035)

  • MD 20 % / CD 20 %

Tongue Tear (ASTM D2261)

  • MD 55 lb (244 N) / CD 50 lb (222 N)

Trapezoidal Tear (ASTM 4533)

  • MD 55 lb (244 N) / CD 45 lb (200 N)

Moisture Vapor Transmission (ASTM E96)

  • 0.06 perms (0.41 g/day-m2)

Pliability (ASTM D146)

  • Pass (no cracking)

Water Ponding (CAN/CSA A220.1)

  • Pass (no dripping)

Low Temperature Flexibility (ASTM D1970)

  • Pass (no cracking, 5ᴼ F / -15ᴼ C)

Operating Temperature Rating

  • -40ᴼ F (-40ᴼ C) to 240ᴼ F (115ᴼ C)

Puncture (T 803)

  • 5.5 joules

UV Weathering

  • 12 months (UV Stabilized)

Class A Fire Rating (ASTM E108)

  • Pass

Florida Building Code Approved

  • FL 6902

ICC-ES Acceptance for Roof Underlayment

  • (AC 188) ESR-2185

Hail Resistance Rating (UL 2218)

  • Pass

Impact Resistance (ASTM D1709)

  • Pass

Roofing Underlayments (ASTM D226)

  • Pass

  • All Standard Types of Roofing Cladding.
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