초록 ▼

A roofing membrane material is disclosed. The material is characterized in that it includes a woven or non-woven fibrous mat having an adhesive asphalt coating, such as a two-layer asphaltic coating applied to one surface thereof. The asphaltic coating can be a first relatively non-adhesive asphalti

A roofing membrane material is disclosed. The material is characterized in that it includes a woven or non-woven fibrous mat having an adhesive asphalt coating, such as a two-layer asphaltic coating applied to one surface thereof. The asphaltic coating can be a first relatively non-adhesive asphaltic material that infiltrates a portion of the fibrous mat and a second, relatively adhesive asphaltic material deposited upon an exposed surface of its non-adhesive counterpart.

대표청구항 ▼

[ What is claimed is:] [1.]1. A rooting membrane material which comprises:a) a fibrous mat having an upper surface and a lower surface; andb) an adhesive asphalt coating comprising a double-layer asphaltic coating comprising:i) a relatively non-adhesive asphaltic material layer deposited on the lowe

[ What is claimed is:] [1.]1. A rooting membrane material which comprises:a) a fibrous mat having an upper surface and a lower surface; andb) an adhesive asphalt coating comprising a double-layer asphaltic coating comprising:i) a relatively non-adhesive asphaltic material layer deposited on the lower surface of the fibrous mat in a manner such that it partially infiltrates into but not completely through the fibrous mat, andii) a relatively adhesive asphaltic material layer adhered to an exposed surface of the relatively non-adhesive asphaltic material layer, rein the relatively non-adhesive asphaltic material layer does not extend through the fibrous mat to the upper surface thereof.