Heavy sheet composed of a polymeric matrix based on flame retardant bitumen with a high additivation of mineral charges and coated one side with aluminum. Fire classification HL3 class R1 according to EN 45545-2 standard.

Chlorinated polyethylene (CM) polymeric heavy layer with a high amount of mineral charges and coated with a polypropylene non woven.

EPDM/EVA rubber polymeric heavy layer with a high amount of mineral charges.