When installing ballasted roofing systems, green roofing systems or casting concrete pads on Sika-Trocal membranes a protection sheet must be installed to protect the membrane. 

Sika-Trocal offer different types of protection sheet, where none of these is suitable any alternative protection sheet must be checked for compatibility with the Sika-Trocal membrane and the layers above it, as must its ability to provide the required level of drainage, where appropriate.

Sika-Trocal Products: