Insulation, Crawl Space & Mold Services in Seattle, WA

Yes. Green Attic serves Seattle from two offices. Our Kent headquarters handles south Seattle neighborhoods including Rainier Beach, Beacon Hill, Georgetown, and West Seattle. Our Mountlake Terrace office serves north Seattle areas including Ballard, Wallingford, Green Lake, Lake City, and Northgate. Our license number is GREENAL785CS.

Seattle has some of the oldest housing stock in the region, and the problems vary by era and neighborhood. Craftsman homes in Ballard, Wallingford, and Columbia City often have uninsulated or minimally insulated walls and attics with original materials from the early 1900s. Mid-century ramblers in Rainier Beach, Lake City, and Beacon Hill typically have compressed fiberglass batts well below current R-49 code. Crawl space moisture is a concern citywide due to Seattle's wet climate, but homes on hillsides face additional drainage challenges while homes in low-lying areas near waterways deal with high water tables.

Seattle homeowners are served by Seattle City Light, which runs its own weatherization programs separate from Puget Sound Energy. Seattle City Light offers rebates for qualifying insulation upgrades and also administers income-based weatherization assistance for eligible households. The programs and rebate amounts change periodically, so we recommend checking current availability during your free estimate. We can help explain what qualifies based on your specific project.

Call us at (800) 931-1938 or submit the estimate request form on our website. We will route your appointment to the office closest to your neighborhood, either Kent for south Seattle or Mountlake Terrace for north Seattle. We can typically schedule an inspection within a few days. We assess your attic, crawl space, or both, document everything with photos, and provide a written estimate on the spot.

It depends on your neighborhood. Our Kent headquarters is approximately 15 to 20 miles from south Seattle neighborhoods like Rainier Beach and West Seattle. Our Mountlake Terrace office is about 10 to 15 miles from north Seattle neighborhoods like Ballard, Wallingford, and Lake City. Either way, we work in Seattle daily and can usually schedule service within a few days.

Many of Seattle's residential neighborhoods are built on slopes, from Queen Anne and Capitol Hill to Beacon Hill and West Seattle. Hillside homes often channel rainwater and groundwater downhill directly toward the foundation. If the original drainage was minimal or has deteriorated over the decades, water enters the crawl space and creates persistent moisture, mold conditions, and wood rot. Proper grading, drainage improvements, heavy-duty vapor barriers, and sometimes sump pump installation are needed to resolve these issues long-term.