Flooding and standing water in your crawlspace
Before concrete can be poured, proper actions must be taken to drain the water. Many crawlspaces without proper drainage will flood or even hold pockets of water after a heavy rain. TO INSTALL the proper drainage, a trench must be dug around the perimeter of the crawlspace and a 4 inch perforated drain tile (with filter sock around the tile) should be installed. In many cases washed river stone is poured around the drain tile. The drain tile system is then diverted to a sump pit basin with a covered lid. A 1/2 horse power sump pump with check valve and 1″ 1/2 PVC discharge pipe will remove any water from under your new concrete floor and discharge it into a low area in your yard. Installing this system before your concrete floor is poured will insure a lower water table and keep the soil under your floor dry. Imagine your home without a damp, musty, smelly, crawlspace, which has been turned into useable space.