Johns Manville

Brian Francis Olson

Brian G Shamas

Theodore W Michelsen

Hal Steven Shapiro

Gary Allen Lundholm

Timothy J Olehowski

Byron James Lemonier

Provided is a roofing system comprising a thermoplastic roofing membrane and one or more raised metal profiles attached to the thermoplastic roofing membrane. In an embodiment, provided is a method of improving a roofing system comprising a thermoplastic roofing membrane. The method comprises installing one or more thermoplastic coated raised metal profiles on the roofing system. A side of the one or more thermoplastic coated raised metal profiles comprises a thermoplastic layer. Installing the one or more thermoplastic coated raised metal profiles on the roofing system comprises welding the thermoplastic layer to the thermoplastic roofing membrane. The presently disclosed raised profiles provide not only desirable aesthetics to thermoplastic roofing systems, but can also provide structural benefits to the roofing system.

Thermoplastic roofing system

A method of manufacturing roofing felts, cap sheets, base sheets and similar built-up roofing products from fibrous mats includes: supplying a roofing mat to a manufacturing process; moisturizing the roofing mat by applying steam or a liquid mist to one or both major surfaces of the roofing mat during the manufacturing process to increase the moisture content of the roofing mat and reduce the amount of hot bitumen accepted by the roofing mat during a coating operation; and applying a hot bitumen coating to one or both major surfaces of the roofing mat during the manufacturing process after the moisture content of the roofing mat has been increased by the moisturizing step.

Manufacture of built-up roofing products with moisture conditioned

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Highlands Ranch, CO, United States of America

Brian Francis Olson