Leaks between Oahu condo units and failed plumbing leave floors and walls wet. We extract the standing water, set up dehumidifiers and air movers, and take moisture readings every day until the floors and framing test dry.
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Available 24/7 · Oahu and nearby areas
Mold Remediation in Oahu, HI
A leak from the unit above, high humidity, or a sliding door leak can feed mold. Our crew handles mold remediation on Oahu, finds the moisture behind it, and dries the space out. Call any time, day or night.
Call (808) 278-536945minutes
IICRC Certified Firm#70120685
We work with all major insurance carriers
Mold help
Mold in Oahu homes
Oahu has more high-rise living than anywhere else in the state, and condo towers add their own mold risks. Water from a leaking unit above can travel through shared walls and plumbing stacks. The stain on your ceiling may be the first sign of a problem that started a floor or two up.
Many towers rely on window or wall AC units and sliding lanai doors that sweat and leak in the humid air. Moisture collects in tracks, behind drywall, and under flooring.
Manoa and the Windward side get frequent rain. Older walk-ups in Makiki and Kalihi have little airflow, so they stay damp for weeks.
Homeowners, property managers, and business owners call us about mold all year round. We work across Honolulu, East Honolulu, Central Oahu, Leeward Oahu, Windward Oahu, and North Shore.
Call Now (808) 278-5369Mold remediation at a glance
What’s included
Tracing leaks across condo units, containment, removing moldy materials, HEPA cleaning, dehumidifier drying, and repairs coordinated with your building.
Typical timeline
A vanity or closet takes a day or two. Mold spread across several units or rooms can take a week or more.
How cost is set
How many rooms or units are affected, building coordination, what comes out, and shipping for materials.
First visit
Call (808) 278-5369A free inspection and estimate before any work starts.
Found mold?
What to do when you find mold
Finding mold is stressful, but you have time to do this right. Acting in the first day or two keeps it from spreading.
Not sure how big the problem is? Call and talk it through with our crew.
Call (808) 278-5369What to do
Look for the water
Check above and around the mold for a drip, a damp spot, or a stain. Stopping the water stops the mold from growing.
Bring the humidity down
Run the air conditioning or a dehumidifier. The EPA recommends keeping indoor humidity below 60%, ideally between 30% and 50%.
Take photos
Photograph the mold and any water damage before anything is cleaned. Your insurance company may ask for them.
Clean small spots the right way
For a patch under about 10 square feet, the EPA says you can usually clean it yourself with detergent and water. Wear gloves, eye protection, and a mask.
Keep sensitive people away
Anyone with asthma, allergies, or a weak immune system should stay out of the area until the mold is gone.
What not to do
Don’t scrub or sand it dry
Dry mold sends spores into the air and through the house. Keep the surface damp while you clean it, or leave it for a pro.
Don’t bleach it and paint over it
Bleach can whiten the surface, but on drywall and wood it doesn’t reach the mold growing inside. Paint over mold peels, and the mold keeps growing underneath.
Don’t point fans at it
Fans blowing across mold carry the spores into other rooms.
Don’t run the heat or air if the mold is in the ducts
The system will blow spores through the whole house. Leave it off until it’s been checked.
Don’t buy a test kit first
If you can see mold, the EPA says testing usually isn’t needed. Spend the money on finding the leak.
Where mold hides
Where we find mold in Oahu homes
On Oahu, mold usually comes from condo leaks, humid air in closed spaces, or wet valley weather.
Under Raised Floors and Walk-Ups
Older homes and walk-up apartments trap damp air under floors and in closets.
Ceilings Below Other Units
Leaks from the unit above travel through ceilings and walls in condo towers.
Bathrooms and Vanities
Shower and sink leaks in condos spread behind vanities and tile.
AC Units and Lanai Sliders
Window AC units and sliding doors sweat and leak in humid air.
Valley and Windward Rain
Windward and valley homes stay damp through long rainy stretches.
Shared Plumbing Stacks
A leak in a building’s shared pipes can affect several units.
How we remove mold
How we remove mold
On Oahu, mold returns unless the leak or humidity is stopped. We start by tracing the source, which in a condo may be in another unit or a shared pipe.
We contain the area. Plastic barriers and HEPA air scrubbers keep spores from reaching hallways and neighboring units.
We remove and clean. Moldy drywall, vanities, and flooring come out, and framing and concrete are cleaned and treated.
We dry and coordinate repairs. Dehumidifiers run until readings match a dry area. We work with building management on any repairs to shared walls or pipes.
What the signs usually mean
A stain on your ceiling from the unit above
What it usually meansA leak traveling down from another unit
What to doNotify building management and have both units checked.
Mold behind the bathroom vanity
What it usually meansA slow sink or shower leak
What to doFix the leak and have the vanity and wall checked.
Mildew along the lanai slider
What it usually meansWater collecting in the track and under flooring
What to doClean the track and have the floor edge checked.
A musty closet in a Manoa home
What it usually meansDamp valley air with no circulation
What to doRun a dehumidifier and have the walls checked.
Spots around a window AC unit
What it usually meansCondensation leaking into the wall
What to doHave the unit and wall checked.
A stale odor in a Honolulu unit with nothing visible
What it usually meansGrowth inside a shared wall, under vinyl plank, or around the AC sleeve
What to doBook an inspection so we can take moisture readings behind the surfaces.
What can be saved
What can be cleaned and what gets replaced
On Oahu, cleaning versus replacing depends on the material, how long the leak or humidity ran, and whether neighboring units are involved. The inspection confirms each item.
Tile, glass, metal, and concrete
Usually cleanedCondo slabs and hard surfaces clean well.
Wood framing
Usually cleanedWood studs and blocking in older Oahu homes with surface growth can usually be cleaned and treated, after checking for termite damage.
Drywall in condos
Depends on how deep it goesCondo drywall with a few spots may clean. Sections below a leak from the unit upstairs with growth through the paper are cut out.
Bathroom vanities
Depends on how deep it goesA solid wood vanity may clean. Particleboard vanities that swelled from a sink leak are replaced.
Vinyl plank and laminate floors
Depends on how deep it goesPlanks that trapped water underneath are lifted or replaced.
Carpet and rugs
Depends on how deep it goesWall-to-wall carpet in a condo bedroom that grew mold on its backing is replaced; small rugs may clean.
Furniture and clothing
Depends on how deep it goesSolid furniture cleans; fabrics with deep growth may not.
Photos and documents
Depends on how deep it goesPhotos and important papers can sometimes be cleaned and preserved by a document specialist if they’re handled quickly in the humidity.
Insulation
Usually removedInsulation in older homes and around AC sleeves that grew mold is pulled and replaced.
Carpet pad
Usually removedPad with growth is replaced.
Particleboard cabinets
Usually removedParticleboard kitchen and bath cabinets that swelled and grew mold are taken out.
Do You Need a Mold Test?
Often not. When the mold is visible and the leak is known, testing rarely changes the plan. It helps when you smell mold but can’t find it, or when a building, landlord, buyer, or doctor needs documentation.
If testing makes sense, we can explain the options and coordinate an independent tester. In condo disputes over where a leak started, documentation can help.
Stop the water behind the mold
Other restoration services we offer on Oahu
Every job starts with a free inspection and estimate. Here’s how the 24 Hour Flood Pros team helps with each type of damage.
Kitchen fires in condos can send smoke through hallways. Soot is acidic and keeps staining surfaces, so cleanup starts early. We remove soot, treat odor at the source, clean what can be saved, and rebuild what can’t.
More about Fire and Smoke Damage
Kona storms and heavy Windward rain can damage roofs, lanais, and windows. We dry the structure, remove damaged materials, and repair the ceilings and walls inside.
More about Storm Damage
Mold in Waikiki hotels, restaurants, or offices needs fast turnaround. We extract, dry, and clean on a plan built around reopening, and we document each step for your carrier.
More about Commercial Restoration
When you’re ready to rebuild, the same crew puts it back together, from drywall to cabinets to the final coat of paint, so there’s no second contractor to hire.
More about ReconstructionDealing with one of these?
Call (808) 278-5369Call and talk to our crew about what happened. The call is free, and so is the inspection.
Our process
What happens after you call
- 1
You call, we send a crew
Call (808) 278-5369 any time, day or night, including weekends and holidays. Tell us what you’re seeing or smelling, and where. We’ll send a crew right away.
- 2
We inspect and find the source
The 24 Hour Flood Pros team looks for the moisture feeding the mold. We use moisture meters to find water hiding inside walls, under floors, and in the crawlspace. We take photos for your insurance. The inspection is free.
- 3
We close off the area
We seal the work area with plastic and set up HEPA air scrubbers, so spores don’t spread to clean rooms. The heat and air stay off in that area while we work.
- 4
We stop the moisture
We dry out the water and show you what’s causing it. If a plumber, a roofer, or an HVAC tech needs to fix a leak, we tell you before we go further.
- 5
We remove moldy materials
Drywall, insulation, and carpet pad with mold growing in them are cut out, bagged, and carried out. That way we only remove what really needs it.
- 6
We clean and dry what stays
Framing, subfloor, and other solid surfaces are HEPA-vacuumed, cleaned, and treated. Then we dry them until they read close to a dry room elsewhere in the house.
- 7
We make the repairs
When you’re ready, the 24 Hour Flood Pros team fixes the damage. We replace drywall, install cabinets, and finish with fresh paint. Our goal is to make your home look the way it did before.
- 8
Final check with you
Before we take the plastic down, we check the area for any mold or dust left behind. Then we walk through it with you and send the final records to your insurance company to close out the claim.
Stain on the ceiling from the unit above?
Call (808) 278-5369A leak upstairs can feed mold in your ceiling and walls. Notify your building and call us for a free inspection.
Insurance and claims
Mold remediation and your insurance claim
Sometimes. Many homeowners policies cover mold when it comes from a sudden, covered water event, like a burst pipe or a water heater that gives out. Mold from a slow leak or ongoing humidity is often excluded, and some policies cap mold coverage at a set amount.
Your policy decides what’s covered, not us. We work with all major insurance carriers, including State Farm, Allstate, Liberty Mutual, Farmers, American Family, Travelers, and Nationwide, and we keep the paperwork clear enough that your claim doesn’t stall.
Report it soon after you find it. Waiting can make it harder to show the mold came from a sudden event.
If a claim stalls, you can file a complaint with the Hawaii Insurance Division.
What your adjuster will ask for
- When you first noticed the mold or the smell
- What caused the moisture, and when it started
- Photos of the mold and any water damage
- Receipts for any work already done on the leak
What we send them
- Date-stamped photos of each affected area
- Moisture readings showing where the water is
- A line-by-line estimate for removal and rebuild
- One point of contact for your adjuster
Where we work
Areas we serve around Oahu
We serve Honolulu and communities all around Oahu.
Areas
- Honolulu
- East Honolulu
- Central Oahu
- Leeward Oahu
- Windward Oahu
- North Shore
Nearby cities
- Kapolei
- Pearl City
- Aiea
- Waipahu
- Mililani
- Ewa Beach
- Kaneohe
- Kailua
- Hawaii Kai
- Wahiawa
- Haleiwa
- Waianae
Don't see your area listed? Call us and we'll tell you right away.
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Common questions
Oahu mold remediation FAQs
How fast can 24 Hour Flood Pros get to me?
A crew can be there within 45 minutes. We work 24/7, including nights, weekends, and holidays, so you can call the moment you find mold or a leak.
Is black mold dangerous?
Any mold growing indoors should be removed, whatever its color. The CDC’s advice is that you don’t need to know the type of mold to deal with it. Mold can trigger allergies and asthma, so people with breathing problems or weak immune systems should stay away from it.
Can I clean mold myself?
For a small area, yes. The EPA says a patch under about 10 square feet, roughly 3 feet by 3 feet, can usually be cleaned with detergent and water while you wear gloves, eye protection, and a mask. Call a professional for anything larger, mold in the heating and air system, mold after sewage or flood water, or mold that keeps coming back.
Do I need a mold test before remediation?
Usually not if you can see the mold. Testing is most useful when you smell mold but can’t find it, or to confirm the cleanup worked.
Will the mold come back after remediation?
Not if the moisture is fixed. Mold comes back when the leak, the drainage problem, or the humidity is still there. That’s why every job starts with finding the source, and why we dry everything before the walls are closed.
Do I need to leave my home during mold remediation?
Usually not. We seal off the work area and filter the air, so most people stay home. For large jobs, or if someone in the house has breathing problems, we’ll tell you in advance if staying somewhere else makes sense.
How much does mold remediation cost on Oahu?
It depends on how big the area is, what has to be removed, how hard it is to reach, and what it takes to stop the moisture. A bathroom wall costs far less than a whole crawlspace or attic. The inspection and estimate are free, so you know the cost before any work starts.
How long does mold remediation take?
A small area can take a few days. Crawlspaces, attics, and rooms that need rebuilding take longer. Your estimate includes a schedule.
Does Hawaii require a license for mold remediation?
Hawaii doesn’t issue a specific state license for mold remediation, so it’s worth checking a company’s training and certifications before you hire it. 24 Hour Flood Pros is an IICRC Certified Firm, #70120685.
Available 24/7
Get a free inspection
Day or night, weekend or holiday, call (808) 278-5369. A crew can be there within 45 minutes to start your free inspection.
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