Basement Cavity Drained Waterproofing System
This design of waterproofing uses high density polyethylene sheet materials over the walls, floors and arched or sloping ceilings but not flat ceilings because of the risk of water ponding/pooling. Extruded moulded studs on the reverse of the sheet material serve to hold the product away from the substrate allowing an air gap behind the system in which water and water vapour can move unhindered in all directions thus achieving ‘damp pressure equalisation’. Water entering the structure behind the membrane is collected within a drainage conduit at the base of the wall and taken to a sump chamber where a sump pump will dispose of it in a controlled way.
The weakest point of any below ground structure is deemed to be the floor/wall joint (the juncture where the floor abuts the wall) and thus the most susceptible to water ingress. Here-to water pressure is equalised and controlled by the installation of the drainage conduit.
If you are looking to waterproof your basement, get in touch with us today.