REGUPOL solar standard is a protection layer for flat roof constructions in accordance with DIN 18531 and flat roof guidelines.The product is designed for photovoltaic and solar systems on flat roofs and is manufactured to match the respective mounting system. It consists of PUR-bonded rubber granules with a high recycled content. REGUPOL solar standard is used to protect roof waterproofing membranes against mechanical damage and thermal impact during the installation and operation of photovoltaic systems. The product is pressure-resistant, elastic and resistant to microorganisms, ageing and temperature. It is water-permeable, vapour-permeable, rot-proof and antistatic according to EN 1815.