Dark spots, a musty smell or a spreading stain?
If you see dark spots on a wall or ceiling, smell something musty in a closet or basement, or find a stain that keeps coming back, you may be dealing with mold. Mold needs moisture to grow, so the first question is where the water came from. The trade term for finding, containing and removing mold is mold remediation.
Mold remediation in Bothell, WA
Mold remediation in Bothell, WA is the process of finding the moisture source, containing the affected area, removing contaminated material and cleaning the space so that it can be tested and rebuilt. This is a planned service rather than an emergency, though active water still needs the 24/7 line first.
Testing and remediation follow the ANSI/IICRC S520 standard for mold remediation, and you can ask any company whether its crews work to it. We do not make health claims about mold or diagnose symptoms. Questions about health belong to your physician.
Fix the water first
The EPA says the key to mold control is moisture control. In the calls we see, mold usually follows a specific leak, such as an upstairs toilet, a sink drain, a roof leak, a condensate line or a window that lets in rain. Removing mold while the leak continues means paying to clean the same wall twice.
The Washington Department of Health says to clean and dry water-damaged carpets, clothing, bedding and upholstered furniture within 24 to 48 hours. If a wet area stayed damp longer than that, the EPA advises assuming that mold may follow.
| Situation | What agencies advise | What we suggest |
|---|---|---|
| A small patch, about 10 square feet or less. | Washington DOH and Public Health Seattle and King County say a small area may be cleaned by the occupant with protective gear. | Fix the leak and dry the area. Call if it returns. |
| More than about 10 square feet. | Both agencies advise professional help. | Call for an assessment. |
| Mold in a hidden place or after sewage. | Washington DOH advises a professional. | Call before opening walls or ceilings. |
| A sale or loan depends on it. | Not addressed by these agencies. | Ask about independent clearance testing, below. |
Mold behind a wall or in a basement?
Call to book an assessment. Scope and price are explained before work starts.
Mold after water damage
Mold after a water loss is the most common reason people call. It shows up in carpet that stayed damp, behind baseboards, under bathroom sinks and in closets against an exterior wall. Public Health Seattle and King County says to dry surfaces quickly and thoroughly after cleaning.
If you are early in a loss, the best step is faster drying rather than mold work. See water mitigation for how structural drying prevents it, and water damage cleanup for removing wet materials.
Mold removal and black mold cleanup
Color does not tell you how dangerous a mold is, and we do not use it that way. Black, green and white growth are all handled by finding the moisture, containing the area with plastic barriers and negative air, removing porous materials such as drywall and carpet, and HEPA cleaning what stays.
Containment matters because scrubbing mold dry sends spores through the house. A crew sets barriers first, removes material second and cleans third. Surfaces that can be cleaned are cleaned, and wet-sensitive materials such as drywall and insulation are replaced.
Mold testing and inspection
Callers often ask whether it is mold at all. A visual inspection with a moisture meter finds the source and the extent. Sampling can confirm what is growing, and independent clearance testing after remediation shows whether the area meets the clearance criteria.
Clearance matters for a home sale or a loan. A buyer's lender may refuse to fund until mold is addressed, so ask for written clearance from an independent tester. We cannot promise that any lender or buyer will accept it.
What Washington requires of mold contractors
The Washington Department of Health says there are no specific certification requirements for performing mold or water damage restoration in Washington State, and it advises hiring a contractor who is licensed, bonded and insured. The state Department of Labor and Industries says all construction contractors must register with L&I.
Ask any contractor for their L&I registration number and check it with the department. The same page says the registration number must appear on advertising, bids and estimates.
What affects the cost of mold remediation
Mold jobs are priced by the area, the materials and the containment needed. These are the main factors.
Affected area
Square footage and the number of rooms set labor and containment.
Materials
Drywall and carpet come out. Framing and concrete are cleaned.
Containment and air control
Barriers and negative air machines add setup and equipment.
Moisture source
A leak that is still active has to be fixed before work starts.
Testing and clearance
Independent clearance testing is separate from removal.
The Washington insurance commissioner says many policies offer limited mold coverage, and only when the mold results from a covered loss. Check your policy.
Where Bothell homes grow mold
Bothell's wet season runs from fall through spring. NOAA's normals for the nearby Seattle-Tacoma station show November, December and January as the wettest months, with July at 0.60 inches. Closets on exterior walls, bathrooms without a working fan, basements and crawl spaces stay damp longest.
Wetlands run throughout the Canyon Park subarea, according to the city's plan for it, and ground near wetlands can keep basements and crawl spaces damp for weeks. Hillside and lakefront homes in Kirkland face a different mix of exposure.
Related water damage services
Mold usually has a water story behind it. If the leak is active, call about emergency water removal. If the structure is wet, water mitigation comes first. Once the mold is gone and the wall is dry, water damage repair rebuilds it.
Common questions about mold remediation
Washington DOH and Public Health Seattle and King County say a small area of about 10 square feet or less may be cleaned by the occupant with protective gear. They advise professional help for larger areas, for mold in hidden places and for mold after sewage.
We do not rank mold by color and we do not make health claims. Any mold in a living space should be dealt with by fixing the moisture and removing it safely. Take health questions to your physician.
Removal cleans what is there. Mold returns when moisture returns, so we cannot promise it will never come back. Fixing the source and keeping humidity down are what prevent regrowth.
Independent clearance testing is done by a third party after remediation, which is why it carries weight with lenders and buyers. Ask us about the process and we will explain what to request.
The Washington Department of Health says there are no specific certification requirements for mold or water damage restoration. Contractors must still register with the Department of Labor and Industries, so ask for the registration number.
Many policies offer limited mold coverage, and only when the mold results from a covered loss, according to the Washington insurance commissioner. Check your policy and ask your insurer.
Mold itself is rarely an emergency, but the water that feeds it can be. The 24/7 line takes calls any hour, and active leaks are handled first through emergency water removal.