Last updated: October 2026

Western Washington's wet winters keep siding damp for months — moss and mildew growth on shaded walls is the signature local issue; the east side runs drier and sunnier. Across the 31 Washington cities we track, an average of 37.1% of homes were built before 1980 (U.S. Census Bureau, ACS 2020–2024) with average annual rainfall of 37.7 in/yr (NOAA 1991–2020 normals).

City-by-city guides

• Siding in Auburn, WA — pop. 85,676
• Siding in Battle Ground, WA — pop. 21,886
• Siding in Bellevue, WA — pop. 151,847
• Siding in Bonney Lake, WA — pop. 22,090
• Siding in Bothell, WA — pop. 49,610
• Siding in Camas, WA — pop. 27,007
• Siding in Edmonds, WA — pop. 42,735
• Siding in Everett, WA — pop. 111,845
• Siding in Federal Way, WA — pop. 99,493
• Siding in Issaquah, WA — pop. 39,591
• Siding in Kenmore, WA — pop. 23,741
• Siding in Kent, WA — pop. 135,603
• Siding in Kirkland, WA — pop. 92,621
• Siding in Lake Stevens, WA — pop. 40,253
• Siding in Lakewood, WA — pop. 62,937
• Siding in Lynnwood, WA — pop. 40,110
• Siding in Maple Valley, WA — pop. 28,287
• Siding in Marysville, WA — pop. 73,002
• Siding in Mercer Island, WA — pop. 25,307
• Siding in Mountlake Terrace, WA — pop. 23,104
• Siding in Mukilteo, WA — pop. 21,323
• Siding in Puyallup, WA — pop. 42,746
• Siding in Redmond, WA — pop. 77,353
• Siding in Renton, WA — pop. 105,317
• Siding in Sammamish, WA — pop. 66,463
• Siding in Seattle, WA — pop. 754,195
• Siding in Tacoma, WA — pop. 222,758
• Siding in University Place, WA — pop. 34,911
• Siding in Vancouver, WA — pop. 195,300
• Siding in Washougal, WA — pop. 17,490
• Siding in Woodinville, WA — pop. 13,438

How to use these guides

Each city page pairs siding how-it-works guidance — warning signs, the inspection process, materials, repair vs. replace — with that city's real housing-age and rainfall data, so you can see which pattern dominates locally. When you talk to contractors, ask how their plan accounts for the local weather, and whether they probed for rot before quoting a scope.