It s also the most expensive often 15 000 to 30 000.
Waterproof basement walls exterior.
Don t use limestone to backfill.
Do not use tar.
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.
The surest way to waterproof your basement walls is a full scale exterior waterproofing solution.
The plastic like material will peel and moisture will make its way in.
Do not use plastic to waterproof your basement walls.
Tar will become very brittle and will crack eventually.
Waterproofing the exterior of your basement will cost between 9 000 to 15 000 for the average home most professionals will tell you that the best way to waterproof your basement is to fully waterproof the exterior but it s also the most expensive option.
The following should be avoided when waterproofing a basement.
Exterior waterproofing involves excavating all around the house to the full depth of the foundation walls then installing a waterproof coating or membrane topped by drainage panels.