PAVATEX sarking boards can be exposed to the weather for three months, and are “waterproof” according to the European Standard EN 14964 for sarking boards. ISOROOF sarking boards are simultaneously also insulation boards, and can therefore be included in the calculation of the heat transfer. When used as sarking boards, please observe the country-specific application codes according to the regulations and standards in the technical documentation. ISOROOF sarking board can be used as a vapour permeable, water repellent layer in external walls in timber constructions with clad walls. An additional facade membrane is required for open facade cladding, e.g. PAVATEX FBA.