Black mold in Edmonds is handled the same way as any other mold: fix the moisture source, contain the area, clean or remove the growth and dry the structure before repairs. Color isn't a guide to how risky a mold is. Call the number on this page to be connected with a local mold remediation company in Edmonds.
Edmonds conditions that feed dark mold
Edmonds sits on Puget Sound in southwest Snohomish County, about 14 miles from Seattle, with a ferry terminal at the foot of Main Street and a downtown set in the valley locals call the bowl. The waterfront has a seawall and marina, and on December 27, 2022, king tide waves broke over that seawall, about a foot and a half of water covered the marina area, and Dayton Street between SR 104 and Railroad Avenue closed with water one to two feet deep in places. Up the hillsides, the common sources are groundwater seeping into daylight basements, condensation on cold glass, and bathrooms without good exhaust.
Clean it or remove it?
| Situation | Usually cleaned in place | Usually removed and replaced |
|---|---|---|
| Dark spots on tile, glass or sealed window frames | Yes, detergent and water, then dry | Caulk that stays stained |
| Growth on painted drywall, firm and dry behind | Small patches under about 10 sq ft | Larger areas or soft, stained drywall |
| Black staining on wood framing or joists | Sound wood, HEPA vacuumed and scrubbed | Wood that is rotted or crumbling |
| Carpet, pad or insulation with mold | Rarely | Usually, per EPA guidance on porous materials |
| Anything soaked by seawater or floodwater | Hard surfaces after cleaning and drying | Drywall and insulation below the waterline |
Signs to watch for
- Black or dark green speckling in ceiling corners and along window sills.
- A musty smell in a basement, closet or room that's been closed up.
- Paint that bubbles or peels on an exterior wall.
- Stains on the floor or ceiling under a bathroom.
- Warped baseboards in a lower level after heavy rain.
Timing and seasons
Dark mold tends to show up from late fall through early spring, when windows stay shut and nothing dries. That's also when king tides and winter storms hit the waterfront. The Snohomish County Health Department advises drying water-damaged material within 24 to 48 hours, so act early after any leak or high water. If drywall comes out and walls need rebuilding, the Edmonds Building Division reviews plans and issues permits. Edmonds Code Enforcement says it doesn't get involved in tenant-landlord disputes, so renters should start with written notice to the landlord.
Black Mold Removal questions in Edmonds
Will bleach get rid of black mold?
Will homeowners insurance pay for black mold removal?
Could black mold be hiding if all I notice is a musty smell?
Will the county health department look at black mold in my home?
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