Is Hebel Panel Waterproof?

Is Hebel Panel Waterproof? The waterproof membrane is UV resistant, rot proof and completely impermeable. Hebel’s recommended finishing systems ensure the system’s long-term durability. Is Hebel porous? Autoclaved Aerated Concrete (AAC) blocks (commonly referred to as ‘Hebel’) are a lightweight and very porous concrete block. Hebel is common as a base for a render finish.