RENOPAN MEMBRANE-FACED is a renovation panel applied over an existing roof without removing the old covering. Its membrane is laminated onto the steel sheet in the factory; no separate waterproofing membrane is laid on site.
The top facing is galvanised steel sheet laminated with a membrane, with a sheet thickness between 0.30 and 0.50 mm. The membrane is supplied as PVC or TPO. A 100 mm flap is left at one end of the panel; the flap lies over the adjacent panel and the joint is closed by the membrane itself.
The panel is flat and has no ribs. The cover width is 1000 mm and the core thickness is between 40 and 100 mm. The rock wool core is chosen for roofs where the fire regulation requires class A2; the thermal conductivity is 0.045 W/mK and the fire class is A2-s1-d0.
The first question in the application decision is the load-bearing capacity of the existing roof. A rock wool core is heavier than polyurethane, and the additional load on the old roof is calculated accordingly.
