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#30lb astm.d226
$19.66
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$18 roll 200 square feet
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ASTM D4869 refers to a standard specification for asphalt-saturated organic felts used in roofing and waterproofing. The "#30LB" indicates the weight and grade of the felt. Here’s a brief overview:
ASTM D4869 Standard Specification
Purpose: Establishes criteria for asphalt-saturated organic felts used in roofing and waterproofing systems.
Weight Classifications: Different weights indicate varying thicknesses and durability levels.
#30LB: Indicates a 30-pound felt, typically thicker and more durable than lighter felts like #15LB.