What is the best mold remover for subfloor?

Author: Danial Homenick  |  Last update: Thursday, January 22, 2026

Treat exposed molded subflooring with a mixture of 1 cup of borax and 1 gallon of water or an EPA-registered mold removal product. Spray the solution on the moldy subfloor. You can also soak affected subflooring with a brush broom. Wait 10 minutes, scrub the area, and repeat the process two more times.

How do you kill mold in subflooring?

Borax is highly recommended as a mold remediation product. To get rid of mold using borax, you'll need to mix it with one gallon of hot water. Then, apply the solution to the area affected by mold beneath the flooring. Next, scrub the area with a brush until the mold cannot be seen anymore.

What is the best floor cleaner to kill mold?

Clorox Tilex Mold and Mildew Remover

You've got to love a cleaning product that does much of the work for you, which is exactly what Clorox Tilex does. The product promises to clean 99.9% of mold and mildew without having to scrub.

What kills black mold on plywood?

Treat exposed molded subflooring with a mixture of 1 cup of borax and 1 gallon of water or an EPA-registered mold removal product. Spray the solution on the moldy plywood. You can also soak affected subflooring with a brush broom. Wait 10 minutes, scrub the area, and repeat the process two more times.

Should moldy subfloor be replaced?

Subfloor absolutely needs to come up and be replaced. Should also inspect floor joists, studs, and base plate for rot/mold and replace as needed.

Black Mold - How To Kill Toxic Mold In Under 5 Mins!

How much does it cost to replace mold on subfloor?

Subfloor Cost per Square Foot

Subfloor replacement typically costs about $3 to $10 per square foot. This range can vary based on labor costs, which will add $25 to $30 per hour, and the type of subflooring you choose.

How to remove moisture from a subfloor?

The first way that you can fix a subfloor moisture problem is by removing the finished floor and exposing the subfloor. Make sure that an HVAC system is installed or use a dehumidifier, and then, let the subfloor dry until the moisture levels have gone down.

What is the best spray for black mold on wood?

CLR Mold & Mildew Stain Remover

If you've been on the lookout for a stain remover that is non-corrosive and non-abrasive, CLR's bleach-free spray is your best bet.

How do you permanently remove mold from wood?

Vinegar is a natural mold killer that is safe for most surfaces, including unfinished wood. Apply the Solution: Dip a soft-bristled brush into the vinegar solution and gently scrub the moldy areas of the wood. For stubborn mold spots, you may need to reapply the solution and scrub multiple times.

Are black spots on plywood mold?

Generally, molds produce spores that are clearly visible as black, white, green, orange, or purple spots on the wood. There are even some molds that are not visible to the naked eye. Mold spores can easily spread to other damp surfaces, including other wood products.

What kills 100% of mold?

Hydrogen peroxide, commonly used to disinfect wounds, is active against a wide variety of micro-organisms including mold. It acts by releasing oxygen at a rapid rate, which kills mold by oxidizing the surface and breaking down proteins and DNA.

What are signs of mold sickness?

Although symptoms can vary, the most common symptoms seen in people exposed to mold indoors include:
  • Nasal and sinus congestion.
  • Eye irritation, such as itchy, red, watery eyes.
  • Wheezing and difficulty breathing.
  • Cough.
  • Throat irritation.
  • Skin irritation, such as a rash.
  • Headache.

What is the strongest mold killer?

Best Products for Mold & Mildew Remediation
  • Vital Oxide Gallon Disinfectant Cleaner and Disinfectant Fogger Sprayer Combo. ...
  • Victory Electrostatic sprayer. ...
  • Victory Electrostatic Sprayer Backpack. ...
  • Vital Oxide Disinfectant - 5 gal pail. ...
  • JETULTRA BACKPACK SPRAYER. ...
  • AEROCLAVE DECONTAMINATION SYSTEM. ...
  • JETULTRA HANDHELD SPRAYER.

How to clean a plywood subfloor?

Periodically, give your plywood floors a thorough cleaning to remove dirt buildup and restore their shine. Start by sweeping or vacuuming to remove loose debris. Then, mop the floors using a damp microfiber mop or cloth, drying thoroughly afterward to prevent water damage.

What does mold on subflooring look like?

Subfloor mold can appear as dark spots or patches beneath flooring materials like carpets, vinyl, or laminate. It often grows on plywood or OSB substrates, common since the 1950s. The presence of subfloor mold can be hinted at by a musty odor.

Does kilz kill mold?

“Does Kilz kill mold?” Despite the brand name “Kilz,” which sounds like it would kill mold, Kilz does not kill mold but does proactively prevent it once it is applied over a mold-free surface. This makes it a good choice for damp areas.

How to remove mold from a subfloor?

Treat exposed molded subflooring with a mixture of 1 cup of borax and 1 gallon of water or an EPA-registered mold removal product. Spray the solution on the moldy subfloor. You can also soak affected subflooring with a brush broom. Wait 10 minutes, scrub the area, and repeat the process two more times.

How do professionals remove mold?

Quality mold remediation professionals may use brushes or sponges and specialized cleaning solutions to remove mold colonies alongside vacuums to extract spores. It is necessary to ensure that every part of a structure is free of mold before restoration starts.

Can I leave vinegar on mold overnight?

Yes, you can leave vinegar on mould overnight, though this isn't necessary as it usually takes effect after an hour. However, you can't use any type of vinegar, for mould removal you must use distilled white vinegar.

What is the best mold killer for plywood?

On almost all wood surfaces, distilled white vinegar is a very efficient method to kill mold effectively. It will go through the wood and kill the fungus at its source. Painted or stained wood can be cleaned with a cleaning solution of warm water and dishwashing detergent or laundry detergent.

Does homeowners insurance cover mold?

Homeowners insurance doesn't usually cover mold damage or removal unless it's the result of a covered peril. If the mold in your residence was caused by something sudden or accidental, such as a bursting pipe or some other covered incident on your policy, you may be protected.

What is the best mould killer for wood?

A solution of white vinegar and water sprayed directly on the affected area can be effective in killing up to 82% of mould species. However, vinegar may not be effective for all types of mould or on all surfaces, so it's often best to do a patch test first.

What pulls moisture out of wood floors?

Use a dehumidifier placed at the highest setting possible to dry the floors. Place it in the center of the room and leave it on for at least 24 hours. Next, place fans around the room so the entire surface receives the blowing air. Place the fans at the highest settings possible.

Does moldy subfloor need to be replaced?

The moldy subfloor must also be removed and replaced. Particular care must be taken when cutting into moldy wood because the process sends mold spores flying into the air. Moldy wood removed from the subfloor should be enclosed in double plastic bags before it is carried through the house.

How to draw moisture out of a subfloor?

Can give some pointers.
  1. Rent the large commercial dehumidifier from Home Depot or Lowe's. ...
  2. Remove baseboards.
  3. Buy 2-3 large carpet fans and place in affected area. ...
  4. Spray any mold cleaner.
  5. Let all this run for 7 days and check daily, the moisture should go down and if it doesn't you may need to shift some of the fans.

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