Active job

Waterproof traffic-able membrane for porch

Hi. This small porch at the front door needs a waterproof membrane that copes with daily foot traffic and needs to be certified to meet code of compliance. The floor material is H3 plywood and sloped to drain towards external stairs. Upstand of 200mm. Floor dimension --- . Coverage area including upstand is 6.25m2. A mid grey colour. See photos.