Underlay, weldable or for mechanical fastening, modified with SBS synthetic rubber, on polyester fabric reinforced and stabilized with glass mesh, not subject to thermal shrinkage during winter and summer, designed for multilayer roofing for any type of roofing under roofing felt modified with SBS synthetic rubber on polyester knitted fabrics reinforced and stabilized with a glass mesh or glass threads, as well as roofing felt on a glass veil, or for heavy waterproofing.

• Max tensile forces along / across 1000 200/700 200
• Medium longitudinally along / across 8 4/8 4