Months of saturated soil
Persistent winter rain keeps hydrostatic pressure on walls for weeks.
Interior Drainage SystemsPacific Coast & Northwest · WA
Basement waterproofing in Washington
Western Washington has long, rainy winters and saturated soils for months; eastern Washington is dry with cold winters. Glacial till around Seattle drains poorly, and hillsides concentrate runoff.
Free referral · Washington
One call connects you with an independent contractor that serves your ZIP code.
Call (833) 460-4463By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.
What kinds of foundations do homes in Washington have?
Seattle and Tacoma have many older homes with basements, often on slopes; crawl spaces are common in suburbs.
What basement and foundation problems are most common in Washington?
Which Washington cities have local guides?
Which parts of Washington are covered?
- Seattle
- Spokane
- Tacoma
- Vancouver
- Bellevue
- Kent
- Everett
What do Washington homeowners ask most?
Why does my Seattle basement stay damp all winter?
Soils stay saturated for months, so pressure on walls is steady. A perimeter drain and sump, plus gutters that move water well away, usually help.
How do I check a Washington contractor?
Verify registration, bond and insurance on the L&I website.
Where can I verify this information about Washington?
- 1U.S. Environmental Protection Agency: MoldGuidance on moisture control and keeping indoor humidity low to prevent mold.
- 2U.S. Environmental Protection Agency: RadonWhy basements in Washington should be tested for radon, and how sealed sumps fit with mitigation.
- 3NOAA National Centers for Environmental Information: U.S. Climate NormalsAverage precipitation, snowfall and temperatures for weather stations near Washington.
- 4U.S. Census Bureau: QuickFactsHousing and population facts for Washington, including the age of local housing stock.
- 5Federal Trade Commission: Hiring a ContractorWhat to check before hiring: licensing, insurance, written estimates and payment terms.
Wet basement or cracked foundation in Washington?
By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.