Foundation Walls of Crawl Space

Efflorescence and staining are visible on the foundation walls, an indication of water infiltration. Efflorescence forms when outside water seeps through the porous cinderblock walls, pulling the salts and sediments to the surface, leaving behind a white powdery residue as the moisture evaporates. Water puddles forming around the exterior of the foundation walls are often the cause of efflorescence and moisture infiltration in the crawl space.