Mold remediation in Burien
Mold spots in a closet. A patch on the wall behind a dresser. A stain on the basement ceiling under an upstairs bathroom. Mold is almost always the second problem. The first is water — a leak, a spill that was never fully dried, or damp air with nowhere to go.
Call (206) 813-0805Mold comes back unless the water is fixed
Clean mold off a wall without fixing what made the wall wet, and it grows back. The moisture source comes first: the leak repaired, the wet materials dried or removed, the damp air dealt with.
In Burien, the wet months run from fall through spring. Houses are shut up, heating is on, and moisture from cooking, showers and drying laundry settles on the coldest surfaces — outside walls, closet corners, behind furniture pushed against them. That's the pattern when mold shows up where there's been no leak at all.
When there has been a leak, the mold is usually where the water went and wasn't dried: inside the wall, above the ceiling, under the floor.
How big is it?
under about 10 square feet
The EPA says a moldy area smaller than roughly a 3 ft by 3 ft patch is, in most cases, a job you can handle yourself, following its cleanup guidelines. Fix the moisture first, wear gloves, goggles and an N-95 respirator, and don't dry-brush it.
more than 10 square feet, or a lot of water damage
This is where the EPA points to professional remediation guidelines. Larger areas need containment so spores don't spread through the house as the material comes out.
Whatever the size, get professional help if:
- the mold came from sewage or other contaminated water
- it's in, or may be in, the heating or ventilation system — don't run it
- it's inside walls, above ceilings or under floors, where you can't see how far it goes
- anyone in the house has health concerns — talk to a doctor first
Telling you when you don't need us is part of the answer.
What mold remediation involves
The affected area is sealed off with plastic sheeting, and air is filtered so spores stay inside the work area. Materials that can't be cleaned — usually drywall, insulation and carpet with growth in them — are cut out and bagged. What stays, like framing, is cleaned. Then the area is dried and checked.
The EPA's test for a finished job is simple: the water problem is fixed, no mold is visible, there's no moldy smell, and the people living there can use the space without symptoms coming back. A mold job is done when the moisture is gone, not when the stains are painted over.
Do you need mold testing?
Usually not, if you can already see it. The EPA says that where mold is visible, sampling generally isn't needed; the job is removal and fixing the moisture either way. Testing earns its cost when mold is suspected but hidden — a musty smell with no visible source — or when there's a specific question someone needs answered, like a sale or a dispute with a landlord.
- There's mold on the finished basement ceiling from an upstairs toilet leak. Is it only the ceiling?
- Probably not. If the toilet leaked long enough to grow mold on the ceiling below, the subfloor under the toilet and the insulation between the floors were wet too, and that's where it's likely worse. The leak gets fixed first, then the ceiling is opened far enough to see how far the growth goes.
- It's in a couple of closets and on the walls where we pulled furniture away. There's been no leak. Why?
- That's the usual pattern for condensation. Closets and walls behind furniture get little warm air, so they're the coldest surfaces in the room, and damp indoor air condenses on them. Small patches can be cleaned, but they'll come back unless air moves better there and indoor humidity comes down.
- Someone looked at it, saw some mold, and wasn't very worried. Should we be?
- It depends on size, cause and where it is. A small surface patch from condensation is a cleaning job. Mold that keeps coming back, that followed a leak into a wall or ceiling, or that covers more than about 10 square feet, is a remediation job. If the moisture behind it is still there, it isn't finished.
- Can you tell what's salvageable before anything is thrown out?
- Mostly, yes. Hard surfaces — glass, metal, sealed wood, framing — can usually be cleaned. Porous materials with mold growing in them, like drywall, insulation, carpet and ceiling tiles, usually can't and are replaced. Furniture and belongings are case by case.
Bigger than a patch, or keeps coming back?
Call (206) 813-0805. Answered any hour, across Burien. No obligation.