Structural Drying & Dehumidification
Professional air movers and commercial dehumidifiers, placed for your actual layout and monitored with moisture meters until the framing, subfloor and wall cavities read dry.
Registered Washington general contractor and licensed plumbing contractor, both under UBI 605495157
What is structural drying?
Structural drying removes water from building materials such as framing, subfloor and wall cavities, and is finished when moisture readings on the affected material match readings on dry material of the same type in the same building.
Structural drying is the process of removing water from the building materials themselves — framing, subfloor, sheathing, the inside of a wall cavity — rather than from the surfaces you can see. It matters because a floor can feel completely dry while the plywood under it is still saturated. We place professional air movers to put moving air across wet material and commercial dehumidifiers to pull that moisture out of the air, then take moisture readings on the affected materials until they match dry material elsewhere in the same building.
What is included
- Air movers positioned for your room geometry, not a fixed count per room
- Commercial dehumidifiers sized to the wet volume they have to handle
- Cavity drying behind baseboards and under cabinets where water tracked
- Crawlspace and subfloor drying, including vapour barrier removal where soaked
- Moisture meter and probe readings on wood, drywall and concrete
- A dated moisture log, compared against unaffected material in the same building
Call us if
- Water has already been extracted but you do not know if the structure is dry
- A floor is cupping, a baseboard is swelling, or paint is bubbling after a leak
- You can smell damp in a room that looks fine
- Another contractor pulled their equipment out after a set number of days without taking readings
How we do it
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Map what is actually wet
Moisture meters and probes find the edge of the water. Water travels along framing and under flooring, so the wet area is almost always bigger than the stain.
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Decide what dries and what leaves
Wet fibreglass insulation, soaked carpet pad and swollen particleboard do not recover. Solid framing, plywood and most drywall do, given airflow.
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Open the cavities that need it
Where water got behind a finish, small access points low on the wall or a lifted baseboard let dry air reach the cavity instead of sealing the moisture in. In a pre-1991 building that cutting waits on the asbestos survey.
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Set the equipment for the space
Air movers go where the wet surface is, angled to sweep it. Dehumidifiers are sized to the wet volume. A sealed room dries differently than an open plan.
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Read, log, adjust
Readings get taken on a schedule and the equipment moves when the numbers say a spot has stalled. Drying is managed, not just left running.
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Prove it reached dry
The target is the reading on dry, unaffected material of the same type in the same building. When the wet material matches, the structure is dry and the log shows it.
Things people get wrong about drying
- Opening windows on a wet Western Washington day can add moisture rather than remove it. Dehumidification is a closed-system job.
- Hardwood and engineered floors cup from below. Whether a floor recovers or has to come up is a judgement call made on readings, not on how it looks on day two.
- Heat alone drives moisture into the air and then straight back into cool materials. Air movement plus dehumidification is what actually removes it.
- A crawlspace with a soaked vapour barrier keeps feeding humidity into the house above long after the leak is fixed.
- Equipment is loud and it runs continuously. That is the trade for a structure that dries in days rather than weeks.
- Drying fast and completely is the thing that stops wet material growing mold. We dry to readings — we do not remove, treat or test for mold, and we say so plainly.
What this costs
We do not publish prices, and we are not going to pretend a range would help you. The scope of a water loss depends on how much material got wet, how long it stayed wet, what has to come out and what can be dried in place, none of which anyone can know from a web page. Call and describe what you are seeing and you will get a straight answer about what is involved, with the scope confirmed once someone has actually looked at it.
If you are going through insurance, the useful thing to know is that mitigation and reconstruction are priced and settled separately. How a water damage insurance claim works walks through who pays what, and in what order.
Structural Drying FAQ
How do you know when something is dry?
By comparison. We take a moisture reading on dry, unaffected material of the same type elsewhere in the building, then read the affected material against it. When they match, that material is dry. A surface that feels dry to the hand tells you nothing about the plywood under it.
How many days does the equipment have to stay?
Three to five days of continuous running covers most residential losses, and a deeply saturated subfloor or a large affected area takes longer. The honest answer is that the readings decide it, not the calendar, and we will show you the log rather than ask you to take it on trust.
Why so much equipment?
Air movers and dehumidifiers do two different jobs. Air movers break the layer of still, saturated air sitting against a wet surface so moisture can leave it. Dehumidifiers take that moisture out of the room air so it does not simply land somewhere else. You need both, and the count depends on how much wet material there is.
Can I turn the equipment off at night?
Please do not. Drying stalls the moment the air stops moving, and a stalled day usually costs more than a day of running cost. If the noise is unbearable in a bedroom, tell us and we will look at relocating equipment rather than switching it off.
Does my wood floor have to come out?
Not always. Some cupped floors flatten out as the subfloor dries and can be sanded and refinished; others have delaminated or the subfloor beneath has swollen past recovery. We read it rather than guess, and we will tell you honestly which one you have.
Will drying stop mold from growing?
Getting material dry quickly is what denies mold the wet conditions it needs, and that is the reason drying is urgent rather than optional. To be straight with you: we dry structures and document the readings, and we do not offer mold removal, treatment or testing. If you already have visible growth, you want a dedicated mold contractor and an independent indoor-air-quality consultant.
Dry to the touch is not dry.
WA Mitigation serves King County, Washington. Licensed, bonded and insured under WA UBI #605495157.