Air & vapour control layer (AVCL) with variable vapour resistance for roofs, walls and floors. Membrane reacts to humidity within adjacent materials, allowing any moisture within the structure which would otherwise be trapped to dry out.
The membrane behaves like a traditional AVCL during the winter. Its vapour resistance range is very wide, with an Sd value of 0.05 m to more than 30 m. Its semi-transparent composition makes it easy to locate the supporting framework behind.
Roll size: 1.5 x 50 m. Lap: 100 mm.