... release paper. This series of membrane is designed for the waterproofing of underground construction such as tunnel, ... dry;no grit,rift and loosing dust. For a large recess,fill it with cement mortar and then ... membrane is paved.(Plastering cement grout in a large area at one time is not recommended, ... period can be shortened drastically. Secondly, the cost for primer is deducted. Above all, the integral ...