Onduline

Francois Ruffenach

Melih Kamil

Michel Thomas

Martin Foutel

A method of fabricating a roof-covering element out of molded cellulose impregnated with bitumen for roofing. In a first step, an element, preferably of cellulose, is made by hot compression molding in a mold, in a second step, once the element has a dry matter content of at least 60% when extracted from the mold, the element is covered in a pigmented varnish and dried, and in a third step, once the element has a dry matter content of at least 98%, the element is impregnated with hot bitumen. Specific operating conditions are given. The covering elements include in particular a ridge side portion, a ridge cap, a ridge-covering kit, a fillet or curb, and a hip.

Method of making a roof-covering element out of compression molded plant fibers impregnated with bitumen, and roof-covering element, in particular a ridge element, a fillet, a curb, or a hip

A method of producing roofing sealing material and roofing sealing material models includes producing a number of bitumen/polymers mixtures holding the polymers and bitumen identical in all of the mixtures and varying the respective percentages of the polymers from mixture to mixture.

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Rouen, France

Francois Ruffenach