Bituminous weathering sheet including continuous glass fibers and method of making same

Claim 1

A WEATHER RESISTANT SHEET UNIT FOR ROOFING, SIDING, SHINGLES AND THE LIKE COMPRISING A WEATHERING GRADE SINGLE ASPHALT MATRIX, A PAIR OF INDIVIDUALLY INTEGRATED GLASS FIBER MATS RELATIVELY THIN COMPARED TO THE THICKNESS OF SAID SHEET, SAID MATS BEING COEXTENSIVE IN DIMENSION WITH SAID SHEET AND BEING PARALLLELLY ORIENTED IN FULLY IMPREGNATED AND ENCLOSED RELATION WITHIN SAID MATRIX MATERIAL BUT IN SPACED RELATION ACROSS THE THICKNESS OF SAID SHEET, EACH SAID MAT COMPRISING RANDOMLY ORIENTED TEXTILE STRANDS OF CONTINUOUS GLASS FIBERS AND RANDOMLY INTERMINGLED DISCONTINUOUS INDIVIDUAL GLASS FIBERS, SAID FIBERS BEING INTERBONDED IN INTEGRATED RELATION IN THEIR RESPECTIVE MATS BY A THERMOSETTING RESINOUS BINDING AGENT, THE TOP-MOST OF SAID MATS BEING DISPOSED IMMEDIATELY ADJACENT THE EXPOSED UPPER SURFACE OF SAID SHEET TO REINFORCE SAID UPPER SURFACE, AND A LAYER OF GRANULES OF MINERAL MATERIAL SET IN THE REINFORCED UPPER SURFACE OF THE ASPHALT OF SAID SHEET.