Prep first
Before you start
- Fix the water source first, since wet areas dried within 24 to 48 hours usually won't grow mold.
- Brush loose mold off outdoors if you can, so spores don't scatter through the house.
- Stop and get help if the mold covers more than about 10 square feet, or came from sewage or contaminated water.
Mold on wood furniture or floors grows wherever moisture sits, so the cleaning only holds once the damp is dealt with too. On wood, the growth can also leave a mark that's partly damage to the fiber, so a faint shadow may stay even after the mold is gone. Fresh growth sitting on top is the easier case, while mold that has worked under a finish is slower to clear.
If you're trying to remove mold from wood furniture, test a hidden spot first and watch how the finish reacts. Black mold on wood can sit under a finish, so a wipe that looks clean may not reach it. Save a mold and mildew remover for stubborn spots once a simple wipe has failed.
Before you start
What wood furniture can take
Use with care5
- Water
- Chlorine bleach
- Oxygen bleach
- Solvents (alcohol, spot removers)
- Scrubbing and abrasives
Avoid2
- Soaking
- Heat, once the stain is out
7 items
What you'll need
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- Rubber glovesKeeps the cleaner and spores off your skin. (opens Amazon)
- Goggles without ventsKeeps spores out of your eyes. (opens Amazon)
- N-95 respiratorSo you don't breathe in spores. (opens Amazon)
- Washing soda or trisodium phosphateThe cleaning agent in the solution. (opens Amazon)
- Clean waterMixes the solution and rinses the wood.
- Soft-bristled brushScrubs the mold without the harshness of a stiff brush. (opens Amazon)
- Clean clothsFor keeping the wood barely damp and drying it.
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6 steps
Step by step
Step 1 of 6
Gear up before you start
Put on gloves, goggles without vents, and an N-95 respirator before you touch anything. Mold spores are what you're protecting against, so don't skip the gear even for a small spot.
Step 2 of 6
Mix the washing soda solution
Dissolve 8-10 tablespoons of washing soda or trisodium phosphate in 1 gallon of water. Stir until the powder is fully dissolved before you dip a brush in.
Tip. Use one powder or the other, not both.
Step 3 of 6
Scrub the mold with a brush
Dip a soft-bristled brush in the solution and scrub the whole mildewed area thoroughly, working in small sections. Give each section the full scrub before you move on to the next one.
Tip. Wring the brush out often so the wood stays barely damp.
Step 4 of 6
Rinse and dry the wood
Rinse well with clear water, wiping with a clean cloth so no solution is left sitting on the surface. Then let the wood dry thoroughly before you judge the result.
Step 5 of 6
Strip finish where mold is trapped
If mold has grown under the paint or varnish, remove all the paint or varnish from the stained areas. Leave the finish alone everywhere else, so the work stays limited to the stain.
Step 6 of 6
Let the wood dry fully
Leave the wood to dry completely, then look for any mold that comes back. If it returns, moisture is still reaching the wood, so fix that source before you clean again.
If you'd rather buy than mix
Best products for mold on wood furniture
Pick a product labeled for wood and your finish, and follow its directions exactly. The washing soda or trisodium phosphate solution in the steps needs no special product.
Amazon Basics Microfiber Cleaning Cloths
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on wood furniture, and its directions fit the steps above.
Finished the steps? How does it look?
Nice work. Let it dry completely and check it again in good light. Here is what done looks like:
How to tell it's really gone →A faint mark usually needs one more round, not a stronger product.
See what to do for what you're seeing →Heavy buildup usually takes more than one round.
Heavy or long-standing buildup →When to call a professional →How to tell it's working
Fuzzy growth should be gone once the wood is fully dry, and the cloth you wipe with should come up clean. A faint shadow that stays after drying usually means the fiber itself was marked, so the old and dried stain approach applies to that part.
What changes for yours
Adjust for your wood furniture
Wood furniture
Furniture usually has a finish on top, so check what's there before you wet anything. Don't use a wood cabinet cleaner on waxed, oiled, shellacked or unfinished wood.
Work the solution on the mold spot only, not the whole piece, and keep the wood barely damp. Drawers, legs and the underside of tabletops are easy to miss, so check those spots too.
Mildew on wood
Mildew is handled with the same steps as mold, since it's the same kind of fungal growth on the same kind of surface. Because mildew weakens fibers, work gently and avoid heavy pressure on the wood.
If the spot still looks lighter or darker than the wood around it after drying, the color may be damage left behind rather than live growth. Give it a second light pass with the solution, then rinse and dry it again.
Wood floors
On floors, keep the cloth barely damp and cover only the spot. Hardwood should never be wet-mopped, and steam mops damage the finish and the wood over long periods.
Don't use ammonia or household dust treatments on wood floors. If the spot keeps coming back, have a certified wood flooring professional look at it, since cleaning alone won't fix mold under the finish.
Cutting boards, plywood, and other wood items
The cleaning here doesn't cover boards used for food, so if you can't be sure a cleaner is safe for food contact, replace the board instead. Porous items may have to be thrown away, and that includes plywood.
If mold has gone between the layers of plywood or the wood feels soft, scrubbing won't reach the damage, so replacing the piece is the safer choice.
Wood with a musty smell
A musty smell usually means mold is still in the wood, so the cleaning steps come first. Don't try to cover the smell with fragrance, and don't use a household dust treatment on wood floors.
Once the wood has dried completely, check whether the smell is gone. If it stays, the mold may still be under the finish, so look at stripping the finish where mold got under it.
Painted, stained, or finished wood
Paint, varnish and stain can hide mold growing underneath, so check the finish before you clean. If mold has grown under the paint or varnish, remove the finish from the stained areas first.
Never put a wax finish on top of a surface finish, so keep those separate when you refinish. Once the finish is stripped and the wood is dry, the surface is ready for refinishing.
Heavy or long-standing buildup
Old mold that has been in the wood for a long time may not lift with the first pass. Give the spot a second scrub with the same solution before you try anything stronger.
If the mark is still visible once the wood is completely dry, oxalic acid can help with what remains. Mix 3 tablespoons into 1 pint of water and apply it only to the stained spot.
Wear rubber gloves, since oxalic acid must not touch your skin, and keep flammable solutions away from any open flame. Rinse the surface thoroughly with clear water and dry it completely before you refinish it. Some mold leaves a mark that can't be fully removed, so be realistic about what cleaning can do.
Vinegar, baking soda, peroxide and more
Do home remedies work on mold on wood furniture?
Home remedies come up often when people search for mold on wood, but most of them don't fit this surface. Stick with a soft brush and a washing soda or trisodium phosphate solution, and keep the wood barely damp.
Helps1Skip4Avoid1
What makes it worse
Mistakes to avoid
Don't rely on bleach for cleaning
Chlorine bleach is not recommended as a routine practice for mold. The washing soda or trisodium phosphate solution does the cleaning here, so there's no need to reach for bleach.
Don't paint or caulk over mold
Paint over mold is likely to peel, so clean the spot and let it dry first. Only add a new finish once the wood is dry and the mold is gone.
Don't brush dry mold indoors
Knocking loose growth off with a brush sends spores into the air you breathe, so do that part outdoors if you can. Wear gloves, goggles without vents and an N-95 respirator for the whole job.
Don't leave the wood damp for days
Wood that dries within 24 to 48 hours usually won't grow mold again, but anything still wet past that gives it the moisture it needs. Track down the leak or condensation first, then dry the piece completely before it goes back into use.
Don't reach for ammonia on wood floors
Ammonia and household dust treatments aren't meant for wood floors, and ammonia gives off toxic fumes if it meets chlorine bleach. Stick to the washing soda or trisodium phosphate mix and rinse with clear water.
Troubleshooting
If the stain is still there
Pick what you're seeing:
Dark spots remain under the varnish
Mold has grown beneath the finish. Strip the finish from those areas, then scrub the bare wood with the washing soda solution.
The wood looks blotchy after drying
Residue may remain from the cleaning solution. Wipe again with a cloth dampened in clear water and dry immediately.
A gray shadow stays after the mold is gone
That may be staining or cosmetic damage, which cannot always be reversed. The oxalic acid treatment for set-in stains is the next step before refinishing.
When to call a professional
Call a professional if the mold covers more than about 10 square feet or came from sewage or contaminated water, since that's beyond a simple clean. In a home built before 1978, disturbing more than 6 square feet needs lead-safe certification, so tell the contractor where the mold is and roughly how large the area looks.
Questions
Can I remove mold from wood without bleach?
Yes. The washing soda or trisodium phosphate solution does the cleaning, and chlorine bleach isn't needed. Keep the wood barely damp while you scrub, rinse with clear water, then let it dry completely.
What's the difference between mold and a stain on wood?
Mold is living growth, so it usually comes off with the cleaning steps once the wood is dry. A plain water mark won't lift with cleaning, so if the mark stays after the steps and full drying, it's more likely a stain than mold.
Is black mold on wood handled differently?
There's no separate method for black mold here, so use the same steps. Dry the area completely afterward, and if the spot comes back, moisture is still getting in.
What about white or green mold on wood?
Green or white growth on wood is still mold, so the same cleaning steps apply. If it's on paint or varnish and has grown underneath, strip the finish from the stained areas before you refinish.
Can a dark mold mark on wood be lightened?
Only as a repair for a stubborn dark mark, never as routine cleaning. Lightly sponge chlorine bleach around the spot, wait 5 to 10 minutes, wipe it dry, then treat the mark itself and repeat as needed. Keep the room open while you work so the fumes can clear.
Does the finish type change how I clean mold off wood?
Yes. Waxed, oiled, shellacked and bare wood each react differently, so identify the finish before anything wet touches it. Dab a bit of mineral spirits onto a white cloth and try it somewhere out of sight, since yellow or brown color coming off the cloth points to wax.
Can a white ring that shows up after mold cleaning be fixed?
Often, but it's a finish problem rather than a mold problem. A white ring means moisture or wear has reached the top coat, and older rings usually mean the finish is wearing out. Refinishing that patch works better than scrubbing harder, which only cuts further into the finish.
Mold on other materials
Other stains on wood furniture
Start from the bigger picture
How we know this
Every method, amount and warning here comes from university extension services, industry bodies and product makers. We read them, check every step for unsafe combinations and changed amounts, and write it up so you can follow it.