Roofing ply product

Details Roofing ply product Roofing ply product

1999-10-01

2000-12-12

Weisberger, Richard

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coating or impregnation specified as water repellent

442 65, 427209, 427299, 427305, 427443, 428364, 4282977, D02G 300

Patent

active

061598763

ABSTRACT:
A process for making a roofing ply roll or sheet product which comprises pretreating a fiber glass mat with water to provide greater than 2 and less than 10 wt. % water therein, and impregnating said moisturized mat with molten asphalt, the amount of asphalt retained in said mat being directly related to the amount of water present in the pretreated mat. An ASTM D 2178 Type VI roofing ply sheet comprising a fiber glass mat impregnated with asphalt and having a tensile strength of at least 60 lbf/in CMD and a flexibility of about 0.2 or less in inch/lb stiffness modulus MD.

REFERENCES:
patent: 5494728 (1996-02-01), Vermilion et al.

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