COMBISEAL HD is a Heavy Duty Gas and VOC-Resistant Waterproof pre-applied membrane, designed for horizontal below slab applications and vertical substrates. When applied to piled wall surfaces a suitable proprietary regulating layer must first be applied (such as spray-applied concrete or structural spray-foam technology).
This Type A membrane, comprises of a high-density polyethylene membrane (HDPE) bonded to a cross laminated non-woven geotextile (black fleece). This fleece ensures a fully bonded connection to the concrete once poured.
COMBISEAL HD is a pre-applied waterproof membrane for basement construction, designed for horizontal application in basement construction, lift pits and other structures which extend below ground.
COMBISEAL HD achieves two Gas Protection Score Points when correctly installed in accordance with table 7 of BS 8485:2015+A1:2019.
