ASTM D3909/D3909M-14 PDF Download

The ASTM D3909/D3909M-14 standard specifies the requirements for asphalt roll roofing (glass felt) that is surfaced with mineral granules. This type of roofing is commonly used as a cap sheet in the construction of built-up roofs. The glass felt used in this specification is a thin porous sheet composed mainly of fine glass fibers arranged in a nonwoven pattern. It contains a water-insoluble agent and may be reinforced with glass yarns, which can be randomly or parallel oriented, and may be gathered or twisted, bonded or unbonded.

The standard outlines the physical property requirements that the products must meet, including pliability, mass loss, behavior on heating, moisture resistance, and dimensions such as width, mass, and area. These specifications ensure that the asphalt roll roofing is of a suitable quality and will perform effectively in its intended application. The inclusion of mineral granules on the weather side provides additional protection against the elements, making it an ideal choice for roofing systems.