Abstract: There is described a sheathing web consisting essentially of a waterproof-coated spunbonded of filaments of organic fiber-forming material. The sheathing web has on at least one surface a structure in the form of a weave pattern for increasing the slip resistance, this pattern having been embossed into the spunbonded in the course of its production.

Abstract: There is described a support web for roofing membranes which comprises a spunbonded made of polyester filaments. The spunbonded has a basis weight of from 50 to 100 g/m.sup.2 coupled with a filament denier of from 1 to 8 dtex and has been consolidated with a fusible binder. This produces a high tear propagation resistance and nail pullout strength and also good dimensional stability at high temperatures. The spunbonded support web is therefore particularly suitable for bitumenized roofing membranes.

Abstract: A support web is described for roof foundation webs which comprises a spunbonded web of polyester filaments. The spunbonded web has a basis weight of 50 to 100 g/m.sup.2 and a filament denier of 1 to 8 dtex. It has been thermomechanically preconsolidated by means of a smooth calender and end-consolidated by means of a binder. This produces a high tear propagation resistance and nail removal resistance and good dimensional stability at high temperatures. The spunbonded web is therefore particularly suitable for use as a support web for bituminized roof foundation webs.