CPC Subgroup
E04D 5/10 by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
Full Title
Roof covering by making use of flexible material, e.g. supplied in roll form (using stiff sheets E04D3/00; gravelling of flat roofs E04D7/00 ; built-up roofs E04D11/02) > by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen