One service that might be a good fit for contractors who install foundation walls and basements is waterproofing. There are two basic types of waterproofing materials: sheet membranes and sprays ...

A waterproof membrane is often installed on the outside of the basement wall, and the system also requires putting in a buried sump pump where water will collect and then be pumped to the surface.

Waterproofing is intended to completely prevent soil moisture and flowing water from penetrating the basement walls or floor.