Whatcom County gives you a lot of moisture, and drywall is where it shows up: a roof or plumbing leak that stains and sags a ceiling, paper-faced rock behind a shower that grows mold, a damp basement wall that crumbles at the base. We cut out the water-swollen and moldy board back to dry, sound material, check the framing behind it, and re-hang. The key is what we put back: moisture-resistant board, the green or purple stuff, where humidity is high, and cement board where there's direct water like a tub surround.
We also care about the source. There's no point replacing a stained ceiling if the leak above it is still running, so we'll flag what's feeding the damage and coordinate around the repair. For mold, we cut a wide enough margin to get past the growth, bag the debris, and re-hang clean. The finished wall gets taped, mudded, sanded, and texture-matched like any of our work, so the only sign there was ever a problem is that it stopped happening.
What it actually costs.
Water damage & mold-resistant drywall $500 to $4,500
Extent of damageA small ceiling patch is the low end; a whole wall and ceiling is the high end
Board typeMoisture-resistant and cement board cost more than standard rock
MoldMold means a wider cut-out, careful removal, and bagging the debris
Source repairWe coordinate around fixing the leak so the damage doesn't return
Our four-step process.
Free walkthrough & written quote
We find the wet and moldy board, check what's feeding it, and hand you a line-item quote.
Cut out & inspect
We cut back to dry, sound board and check the framing and insulation behind it.
Re-hang the right board
Moisture-resistant board where humidity is high, cement board where there's direct water.
Finish & texture match
Taped, mudded, sanded, and texture-matched so the repair disappears, then a walkthrough.
Why hire a real drywall crew.
Water-swollen and moldy board cut out back to sound material
Re-hung with moisture-resistant or cement board where water lives
Framing and insulation behind the wall checked before close-up
Mold cut wide, removed carefully, and the debris bagged
Finished and texture-matched so the repair disappears
Frequently asked questions.
How much does water-damaged drywall repair cost in Bellingham?
It runs from about $500 for a small water-stained ceiling patch up to $4,500 for a whole wall and ceiling with moisture-resistant board in 2026. The extent of the damage, whether there's mold, and the board type drive the price. We give you a line-item quote after we see it.
Do you replace moldy drywall?
Yes. We cut out moldy board with a wide enough margin to get past the growth, bag the debris, check the framing behind it, and re-hang with moisture-resistant board. For widespread mold we'll tell you if a remediation specialist should be involved first.
What drywall do you use in bathrooms and basements?
Moisture-resistant board, the green or purple stuff, in damp rooms like bathrooms, laundries, and basements, and cement board where there's direct water such as a tub or shower surround. Standard paper-faced rock grows mold in our climate, so we don't put it where water lives.
Ready for a free water damage drywall quote?
Tell us about your project, we'll reply within 15 minutes during business hours.
Moisture is the story near the water, Silver Beach on Lake Whatcom, the valley flats in Ferndale, lakeside Sudden Valley. Pick your area for local notes: