Polyshield HD is a heavy‑duty bitumen damp‑proof membrane laminated to a multi‑layer high‑density polyethylene film, intended for waterproofing and damp‑proof course applications. The membrane has a nominal thickness of 3 mm and a mass of about 3.1‑3.3 kg per square metre, complying with BS 6398 standards. It is formulated to contain less than 50 g/L VOCs, meeting relevant environmental guidelines.
