Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1986-04-21
1989-06-06
Thibodeau, Paul J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156 71, 428150, 428283, 428291, 4283166, 4283184, 428480, 428489, B32B 310
Patent
active
048370959
ABSTRACT:
The invention comprises a built-up roof material that has a composite membrane that is formed and affixed to the roof substrate in a single step. The membrane comprises a sheet of heat-resistant, non-woven polyester sandwiched between layers of asphalt. The upper asphalt layer is caused to flow through the polyester and meld with the lower layer of asphalt to form a homogeneous membrane. The polyester sheet is layed in strips side-by-side across the asphalt in widths greater than forty inches across, in order to reduce the number of seams and to conform more closely to the contours of the roof substrate.
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Salzman Robert S.
Thibodeau Paul J.
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