FINISHING MOULDING FOR TOP OF MEMBRANE
As we have written here before, the dimpled membrane is a key product in any quality exterior waterproofing system for the basement.
It is mechanically fastened to a poured cement foundation wall at final grade height. The dimples in the membrane create an air gap or drainage space between the wall and the back of the membrane.
That takes all the hydrostatic water pressure off the wall (hydrostatic pressure is what leads to cracks and other erosion in the wall, which leads to water leaks). The design also allows water to flow down to the footing drain, if by chance any water has made it through the membrane.
Plugs are attached so the membrane sits firmly against the foundation walls.
The finishing moulding is a fastening or sealing system for the membrane that is installed after all the plugs are in. They are pieces of plastic each around four feet long and 3.5 inches wide. It fits vertically or horizontally against the edges of the membrane.