Mold in Walls & Drywall in Mukilteo, WA

Signs of mold inside a wall

• An earthy, musty smell strongest near one wall or inside a closet
• Paint that bubbles, cracks or peels without an obvious reason
• A brown or yellow stain below a window or ceiling corner
• Swollen or separating baseboards
• Drywall that feels soft or cool when pressed
• Gray or black spots low on an outside wall behind furniture

Mukilteo conditions

Mukilteo sits on bluffs above Possession Sound, with Port Gardner Bay to the north, and the land is cut by ravines and gulches along several creeks, including Hulk Creek, which drains to the Sound. Homes along the bluff and in neighborhoods such as Old Town and Chennault Beach face storms coming straight off the water, and that sideways rain tests every window flashing and siding joint. Severe erosion has closed Mukilteo Lane, a reminder of how much water moves through these slopes. Houses built into a hillside often have a lower-level wall backed by soil that stays wet all winter, and finished rooms on that level are a common place for hidden wall mold. Inside, bathrooms, kitchens and laundry walls are the usual sources, along with condensation on north-facing walls.

What affects the cost

Angi's Seattle cost guide reports wall mold jobs ranging from about $825 to $16,550, with labor around $75 to $120 an hour. The low end is a single stud bay behind a sink; the high end is a long run of exterior wall with insulation and sheathing replaced. Expect cost to depend on how much drywall is removed, whether sheathing or framing needs repair, containment, and the finish work to return the room to normal. A hillside wall may also need drainage work outside, which is a separate trade and a separate bill.

What happens when you call

You will be connected with an independent mold remediation company that serves Mukilteo. Describe what you see, where it is and any leak history. Most companies will set up a visit to take moisture readings before giving a price. If the wall needs to be opened, ask for a written scope that covers containment, removal, cleaning, drying and rebuild. Building permit applications in Mukilteo go through the city's online permit portal, and anyone doing the work should be registered with Washington L&I as a construction contractor.