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24/7 · 36530-minute response4.9
24/7 · 365 · 30-minute response

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425 390 59114.9(1,284)

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99.9% of the insurance claims we document are approved

Mold removal, ventilation and vapor-barrier work for attics and crawl spaces.

  • IICRC Certified FirmWRT · ASD · AMRT · FSRT
  • Licensed & InsuredWA #SEATARS812KD · $2M
  • 99.9% Claims ApprovedBilled straight to your carrier
  • 30-Minute Response24/7 · 365 live dispatch
  • Background-CheckedBadged, uniformed crews
  • Free InspectionWritten scope · no obligation
Two certified technicians running HEPA air scrubbers during mold remediation in a Puget Sound basement

Attics and crawlspaces are where Northwest houses hide their moisture. A bath fan venting into the roof space, a dryer duct knocked loose, bare soil under the floor, a downspout discharging against the foundation — all of them feed growth on surfaces nobody looks at until a smell reaches the living room.

We work in those spaces with proper respiratory protection and lighting, photograph everything before we touch it, remove the growth, replace ruined insulation and correct the ventilation or drainage that caused it.

30 minon site, any hour
99.9%claims approved
$0beyond deductible

What attic & crawl space mold removal includes

One written scope, one crew, one point of contact from the first call to the final walkthrough.

  • Attic sheathing and crawl space joist inspection with photos
  • Mold removal by HEPA vacuuming, cleaning and treatment
  • Wet or contaminated insulation removed and replaced
  • Bath and dryer vents routed to the outside
  • Crawl space vapor barrier and drainage corrections
  • Before-and-after photos and moisture readings for your records

How the job runs, step by step

The same sequence on every loss, from a single wet room to a whole floor.

  1. 1

    Inspect

    We go into the attic and the crawl space, photograph what is there and measure moisture.

  2. 2

    Protect the house

    Access points are contained so nothing travels into living areas.

  3. 3

    Remove the growth

    Sheathing and framing are cleaned and treated; ruined insulation comes out.

  4. 4

    Correct the moisture

    Ventilation, vent routing, vapor barrier or drainage is fixed.

  5. 5

    Document

    You get photos and readings showing the finished condition.

Real jobs · drag to compare

Drag the handle on any photo. These are our own projects across King, Snohomish, Pierce and Skagit counties, with the days on site and what the homeowner paid out of pocket.

The same room in Renton after SeaTacRestore completed the mold remediation work
Mold under a kitchen sink cabinet in Renton before SeaTacRestore arrivedBefore
After

Mold under a kitchen sink cabinet

Renton · Mold Remediation

A weeping fitting kept the cabinet base wet. Cabinet bottom replaced, cavity cleaned, leak repaired.

3 days on site$0 beyond deductible
The same room in Lynnwood after SeaTacRestore completed the mold remediation work
Mold on the wall behind a washing machine in Lynnwood before SeaTacRestore arrivedBefore
After

Mold on the wall behind a washing machine

Lynnwood · Mold Remediation

A slow hose leak soaked the wall behind the machine. Drywall replaced, framing treated, paint restored.

4 days on site$0 beyond deductible
The same room in Mount Vernon after SeaTacRestore completed the mold remediation work
Mold on a Skagit basement foundation wall in Mount Vernon before SeaTacRestore arrivedBefore
After

Mold on a Skagit basement foundation wall

Mount Vernon · Mold Remediation

Groundwater kept the block wall damp all winter. Growth removed, wall treated, interior drainage added.

6 days on site$0 beyond deductible
The same room in Auburn after SeaTacRestore completed the mold remediation work
Mold in the closet around a furnace in Auburn before SeaTacRestore arrivedBefore
After

Mold in the closet around a furnace

Auburn · Mold Remediation

A wet coil and a sealed closet kept the walls damp. Growth removed, coil cleaned, closet vented and refinished.

4 days on site$0 beyond deductible
The same room in Bellevue after SeaTacRestore completed the mold remediation work
Attic sheathing mold from a bath fan ducted wrong in Bellevue before SeaTacRestore arrivedBefore
After

Attic sheathing mold from a bath fan ducted wrong

Bellevue · Mold Remediation

A bath fan dumped humid air into the attic. Sheathing treated, insulation replaced, fan ducted outdoors.

5 days on site$0 beyond deductible
The same room in Kirkland after SeaTacRestore completed the mold remediation work
Mold up an exterior closet wall in Kirkland before SeaTacRestore arrivedBefore
After

Mold up an exterior closet wall

Kirkland · Mold Remediation

A cold exterior wall with no airflow stayed damp. Growth removed, wall insulated, cavity vented.

4 days on site$0 beyond deductible
The same room in Bremerton after SeaTacRestore completed the mold remediation work
Joist mold in an open Kitsap crawlspace in Bremerton before SeaTacRestore arrivedBefore
After

Joist mold in an open Kitsap crawlspace

Bremerton · Mold Remediation

Bare soil drove humidity into the joists. Growth removed, joists treated and a sealed vapor barrier installed.

8 days on site$0 beyond deductible
The same room in Everett after SeaTacRestore completed the mold remediation work
Mold behind a leaking shower wall in Everett before SeaTacRestore arrivedBefore
After

Mold behind a leaking shower wall

Everett · Mold Remediation

Failed grout fed the cement board for months. Containment, removal, HEPA cleaning, treatment and new tile.

7 days on site$0 beyond deductible
The same room in Tacoma after SeaTacRestore completed the mold remediation work
Mold across a damp basement wall in Tacoma before SeaTacRestore arrivedBefore
After

Mold across a damp basement wall

Tacoma · Mold Remediation

No vapor barrier and a failed downspout kept the wall wet. Growth removed, wall treated, drainage corrected.

6 days on site$0 beyond deductible
See all 50 documented projects

Every project is our own work, photographed on site and approved by the homeowner.

Verified customer reviews

Attic & Crawl Space Mold Removal reviews from Puget Sound homeowners

Every review below is tied to a completed job. Where a customer raised a problem, the technician who ran the work answered it himself.

4.9

28 reviews on this page

  • 525
  • 43
  • 30
  • 20
  • 10
Reply rate
100% answered by the technician who ran the job
Verification
Every review is tied to a completed attic & crawl space mold removal job

We do not delete the four-star reviews. If a job fell short, the reply below it says what we did about it.

Oct 2026

Mold across the bathroom ceiling from a fan that never moved enough air. They cleaned it, but more importantly they upsized and re-ducted the fan so it has not come back in two winters.

TRTrevor RasmussenKent, King County

Mold remediation

Reply from the technician on the job

Thanks for asking the hard questions about what was safe. It made the scope better. If anything starts to feel damp again, call the office and we will read it for nothing.

Kevin Ishida, Mold Remediation Specialist

Kevin IshidaMold Remediation Specialist

Sep 2026

Two companies wanted to tent the entire house and replace everything. They found the real source, a failed shower pan behind the tile, contained one wall, and finished in four days. Clearance report came with photos.

CKColleen KaminskiUniversity Place, Pierce County

Mold remediation

Reply from the technician on the job

Appreciate it. Containment is the part nobody sees and the reason the rest of the house stays clean. We would rather make one extra visit than have you live with a smell.

Kevin Ishida, Mold Remediation Specialist

Kevin IshidaMold Remediation Specialist

Sep 2026

The remediation was thorough and the clearance came back clean. I would have liked a call before the containment came down, since I came home to it gone and no note.

RGRenee GallagherMukilteo, Snohomish County

Attic & Crawl Space Mold Removal

Reply from the technician on the job

Thank you for both halves of that review. The work was right, the timing was not, and we took it back to the crew.

Hector Villanueva, Senior Water Technician

Hector VillanuevaSenior Water Technician

Aug 2026

Wind drove rain through a bedroom window for a full day and we did not notice the wall was soaked until the paint bubbled. They tarped the roof, dried the cavity, and handled the insurer entirely. It went through without a single pushback.

LLLorraine LindqvistSnohomish, Snohomish County

Storm and flood damage

Reply from the technician on the job

Appreciate the review. Wind-driven rain almost never enters where the stain appears, so the thermal scan earns its keep. We would rather make one extra visit than have you live with a smell.

Danielle Okoro, Response Director · Crew Lead

Danielle OkoroResponse Director · Crew Lead

Jul 2026

A Douglas fir limb came through the roof over the living room. They tarped it that night in the rain, cleared the debris, and dried the ceiling before the rebuild. Zero water damage on top of the tree damage.

CJCorey JovanovicSeattle, King County

Storm and flood damage

Reply from the technician on the job

Thank you. Correcting the entry point is the half of the job that keeps it from repeating next November. If anything starts to feel damp again, call the office and we will read it for nothing.

Hector Villanueva, Senior Water Technician

Hector VillanuevaSenior Water Technician

Jul 2026

Their truck had the phone number on the side and the tech who answered the phone was the same tech who showed up. That kind of continuity is why I trust them.

RPRenee PearcePuyallup, Pierce County

Attic & Crawl Space Mold Removal

Reply from the technician on the job

Glad it went the way it should. That is the standard we hold ourselves to every visit. We would rather make one extra visit than have you live with a smell.

Sierra Beaumont, Contents & Pack-Out Lead

Sierra BeaumontContents & Pack-Out Lead

Jul 2026

What I appreciated was the honesty. They said one section of drywall was not worth saving and did not try to sell me a full wall replacement when a patch would pass inspection.

QLQuentin LarsenIssaquah, King County

Mold remediation

Reply from the technician on the job

Thanks for asking the hard questions about what was safe. It made the scope better. Call any hour if something changes — someone always answers.

Kevin Ishida, Mold Remediation Specialist

Kevin IshidaMold Remediation Specialist

Jul 2026

Second time we have used them, first was a burst pipe, then a mold job at our rental. Same standard both times, which tells you it is the company and not one good crew.

NXNeil XuShoreline, King County

Attic & Crawl Space Mold Removal

Reply from the technician on the job

Thank you — passing this on to the two techs who were on site. Call any hour if something changes — someone always answers.

Semisi Tuilagi, Project Manager · Reconstruction

Semisi TuilagiProject Manager · Reconstruction

Jul 2026

Their report was written so my landlord could not argue. Moisture readings, photos, clear language, dates. The deposit question ended the day they sent it.

ABAnika BrennanBurien, King County

Mold remediation

Reply from the technician on the job

Thank you. Removing less material than another quote is only right when the readings support it. If a neighbour ends up with the same problem, we are only a few minutes away.

Kevin Ishida, Mold Remediation Specialist

Kevin IshidaMold Remediation Specialist

Jul 2026

I have asthma and was nervous about the dust. The crew taped the doorway, ran the scrubber, and cleaned the hallway when they left. No symptoms the entire week.

CHCody HollowaySnohomish, Snohomish County

Mold remediation

Reply from the technician on the job

Glad the clearance came back first time. That is the whole point of doing containment properly. If anything starts to feel damp again, call the office and we will read it for nothing.

Kevin Ishida, Mold Remediation Specialist

Kevin IshidaMold Remediation Specialist

Jun 2026

Half my closet wall was wet behind a dresser I had not moved in years. They caught it, treated it, and told me exactly which wall to keep an eye on from now on.

OMOwen MoreauShoreline, King County

Mold remediation

Reply from the technician on the job

Thank you. Growth is always a moisture problem first, so we treat the source before the surface. Call any hour if something changes — someone always answers.

Kevin Ishida, Mold Remediation Specialist

Kevin IshidaMold Remediation Specialist

May 2026

Their office called twice a day during drying to tell us what was happening next. Nobody in this industry does that in my experience.

NTNadia TakahashiBurien, King County

Attic & Crawl Space Mold Removal

Reply from the technician on the job

Appreciate the review. Calls at that hour are why we staff dispatch around the clock. Happy to come back and check the work, no charge.

Hector Villanueva, Senior Water Technician

Hector VillanuevaSenior Water Technician

Showing 12 of 28 reviews for this area

Do not wait for a stain

Signs you need attic & crawl space mold removal now

  • A cold-room smell upstairs

    Musty air in an upstairs bedroom often originates directly above it.

  • Condensation on roof sheathing

    Frost or droplets on the underside of a deck mean humid air is trapped in the attic.

  • Bath fan venting into the attic

    A duct that ends at the insulation line dumps a litre of water vapour per shower into the roof space.

  • Compressed or damp insulation

    Wet insulation stops insulating, which makes the condensation worse.

  • Bouncy or stained subfloor

    Soft floor joists from crawlspace humidity are a structural warning, not just a cosmetic one.

Free inspection · written scope

What we check before we quote a number

  1. 1

    Full-space inspection

    Attic deck, rafters, top plates, joists and sill plates photographed and metered.

  2. 2

    Vent routing

    Bath and dryer ducts traced to their termination and corrected where they end indoors.

  3. 3

    Insulation condition

    Wet or contaminated insulation is removed and replaced rather than dried in place.

  4. 4

    Ground moisture

    Crawlspace vapor barrier coverage and drainage assessed, because bare soil is the usual engine.

Real Puget Sound ranges

What it costs

  • Attic sheathing treatment, small area

    $1,800 – $4,500

    Includes HEPA vacuuming, treatment and vent correction.

  • Attic with insulation replacement

    $3,500 – $8,500

    Removal, new insulation and ventilation work.

  • Crawlspace growth removal

    $2,500 – $7,000

    Joist cleaning plus sealed vapor barrier installation.

  • Full encapsulation with drainage

    $6,000 – $15,000

    Long-term fix where ground water is involved.

Ranges are what these jobs actually invoice at in King, Snohomish, Pierce and Skagit counties. On a covered claim the carrier pays the scope and you pay your deductible.

What happens, and when

How long it takes

  1. Inspection and photos

    Day 1

  2. Containment at access

    Day 1

  3. Removal and treatment

    Days 1 – 3

  4. Ventilation and barrier work

    Days 3 – 6

Drying is measured, not guessed. We do not remove equipment until the readings match a dry reference material in an unaffected room — even when that means an extra day.

The technical part

The vent that causes half of these jobs

An exhaust fan rated for 110 cubic feet per minute will move roughly a bathtub of water vapour out of a bathroom every week. Terminated outdoors, that is fine. Terminated in an attic, it condenses on the coldest surface available, which is the roof sheathing, and the sheathing grows. Every winter after that adds a layer.

The fix is a short, insulated, correctly sloped duct to a proper roof or wall cap, ideally straight out rather than up. It is a two-hour job that prevents a five-figure remediation, and it is the first thing we check when we see growth on the underside of a roof deck.

Technician removing damp insulation from an attic roof deck with visible mold growth on the sheathing
Technician removing damp insulation from an attic roof deck with visible mold growth on the sheathing
The technical part

Crawlspaces: barrier first, cleaning second

In an open crawlspace, bare soil evaporates into the floor structure year round. Cleaning the joists without covering the soil means the growth returns with the next wet season. A sealed, mechanically fastened vapor barrier over the entire floor, lapped up the foundation walls, is the difference between a repair and a repeat.

Where groundwater is actively entering, the barrier is only half the answer. Grading, footing drains and downspout extensions have to move the water away first, or it will find the low side of the barrier and pool.

Mold technician in a Tyvek suit and headlamp inspecting mold growth on floor joists inside a residential crawlspace
Mold technician in a Tyvek suit and headlamp inspecting mold growth on floor joists inside a residential crawlspace

Why Attic & Crawl Space Mold Removal calls us first

30 min

Typical arrival for attic & crawl space mold removal

4.9★

Average rating, 1,284 reviews

99.9%

Claims we write, approved

12k+

Puget Sound homes restored

  • IICRC certified firm · WRT · ASD · AMRT · FSRT
  • WA Contractor #SEATARS812KD
  • Background-checked, badged crews

Every attic & crawl space mold removal call reaches a live Puget Sound dispatcher. If we are past 30 minutes, the emergency response is free.

425 390 5911

24/7/365 · live dispatcher

31 cities · 193 neighborhoods · 30 minutes or less on site

Attic & Crawl Space Mold Removal across four counties, day or night

Our crews run attic & crawl space mold removal out of a stocked Bellevue yard, with response times between 18 and 30 minutes across the metro and under 45 minutes at the edges of Skagit County.

425 390 5911
Straight answers

Attic & Crawl Space Mold Removal: the questions we answer most

If your question is not here, call and ask it. A live dispatcher answers, not a form.

Do you have to crawl into the space?

Yes. A visual inspection from a hatch tells you almost nothing about joist moisture, duct routing or barrier coverage. We photograph everything so you can see what we saw.

Is the insulation always replaced?

Where it has been saturated or colonised, yes. Damp insulation cannot be effectively cleaned and it stops performing thermally, which worsens the condensation cycle.

How much does a crawlspace vapor barrier cost?

Typically $2,000 to $7,000 depending on area, access and whether drainage correction is needed. It is the single most effective mold prevention step in a Northwest home.

Will my insurance cover attic mold?

Coverage depends on cause. Growth from a sudden roof or plumbing failure is often covered; growth from long-term ventilation deficiency is usually treated as maintenance.

Two white SeaTacRestore work vans with the SEATACRESTORE logo and 425 390 5911 on their side panels

It does not matter what time it is

Call. A truck starts moving before you hang up.

One phone call reaches a live Puget Sound dispatcher, any hour of any day of the year. We log the loss, stage the crew, and stay on the line while you shut the water off. Thirty minutes later somebody is at your door with equipment.

425 390 591124/7/365 · live dispatcher · 30-min response
99.9% insurance claims approvedFree inspection · no obligation1915 140th Ave NE #1699, Bellevue, WA 98005