
Foundation Drainage Tips for Seattle Homeowners
Seattle’s wet climate, glacial till, and clay-heavy soils can put your foundation drainage to the test. Rainwater and groundwater that collects near your home can quickly enter basements and crawl spaces. Without prompt action, this can lead to severe damage, health risks, and discomfort. PureDry Restoration is an IICRC-certified water restoration company serving King, Snohomish, and Pierce counties. Below, we’ll explain how foundation drainage works, common system types, and ways to keep water away from your home. What Is Foundation Drainage — and Why Seattle Homes Need It Foundation drainage actively moves water away from your home’s foundation. A foundation drainage system can include grading, gutters, downspouts, gravel, drainage pipes, and sump systems. Seattle’s saturated soils make drainage especially important. Dense glacial soils can drain slowly, allowing water to remain near foundation walls for longer periods. The water creates hydrostatic pressure, which can cause seepage and cracks, bowing walls, or
















































