BACACIER® sandwich panels are insulated roofing panels, consisting of a double steel facing with an insulating core. The Bacacier range is composed of three types of sandwich panels: the COVISO with through fastenings. Its polyisocyanurate foam (PIR foam) makes it watertight and contributes to the thermal insulation of the building. COVISO FC, a panel with hidden fixings thanks to its metal joint cover system. COVISO LR, a sandwich panel with a high density rock wool insulation core, is perfectly suited to the new fire regulations.