Owens Corning Fiberglas Technology, Inc.

Andy Rudy

Thomas Kent Thompson

Jean E Schelhorn

William David Graham

Charles E Gallinat

A method of molding roofing shingles includes the steps of providing a compression mold having two mold bodies, and installing a mold insert in each of the two mold bodies. The surfaces of the inserts are shaped to correspond with the desired shape of a roofing shingle. A multiplicity of roofing shingles are molded using the compression mold. Each molding step includes charging the mold with a moldable material containing resin in an amount within the range of from about 10 to about 40 percent, and filler material in an amount within the range of from about 60 to about 90 percent, wherein the filler material subjects the inserts to wear by abrasion. The inserts in the mold are replaced when they are worn out, but this is done without replacing the mold bodies.

Method of making an insert for use in a mold for molding roof covering products

A fastenable composite roofing shingle is made from a composition comprising an organic, resinous material and an inorganic filler material, the shingle having a structure comprising a top surface forming an upper, headlap portion and a lower, butt portion, with the headlap portion having one or more targets suitable for indicating a desired fastener location to a shingle installer. The targets include a recessed area in the top surface of the shingle to enable a head of a fastener to be sheltered below the top surface. The recessed area has a hollow dimple defining an area of additional indentation, whereby the thickness of the shingle in the recessed area is greater than the thickness of the shingle in the dimple.

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Upper Arlington, OH, United States of America

Andy Rudy