Best Mold Killer For Wood - Home Tour Series (2023)

As a homeowner, seeing mold on your wooden furniture or decking can be the equivalent of a death sentence. Well, maybe not quite a death sentence, but it’s enough to make any homeowner shudder. Mold might be easy to remove with bleach, but killing mold is a different story.

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Not only can mold look and smell disgusting, but untreated exposure to some molds can be detrimental to health problems. Inhaling mold spores can lead to allergic reactions, and in the worst cases, even asthma attacks.

It is imperative for the health of your household (and for the appearance of it) that you kill mold properly to prevent any potential regrowth. That’s where mold killers come in!

We have found the best mold killers for wood that are designed to treat, kill, and prevent mold regrowth from porous wood surfaces such as decking, garden furniture, and sliding.

We have also compiled a useful buyer’s guide that provides tips on how to identify types of mold, how to kill mold on wood, and how to avoid mold altogether.

Best Mold Killer For Wood Buying Guide

Types of Mold

There are 3 main types of mold that are identified by their color - green, black, and white.

Green mold is a build-up of fungal bacteria that is usually found on out-of-date food products. This type of mold is most commonly found indoors and is a sign of old bacteria.

White mold is similar to green mold in that it is mostly found indoors. This mold type is commonly found on plants caused by root rot and porous walls such as drywall. White mold is often mistaken for mildew as it occurs when the area has been exposed to wetness or humidity.

Black mold is one of the most sinister types of mold. Exposure to this type of mold can lead to health problems such as asthma because of the environments in which this mold grows.

Damp and musty environments are the cause of this mold, so ventilation is essential. Black mold spreads very quickly and should be removed as fast as possible.

Why Bleach Isn’t Enough To Kill Mold

Bleach is great for removing some light mold stains on certain surfaces. However, bleach can often do more harm than good.

Bleach is an abrasive substance that can damage the surface of which you are scrubbing. Drywall, for example, shouldn’t be scrubbed with bleach if there is mold because the bleach will lighten the area of the surface.

Bleach is often only recommended for light mold stains and applied with a mixture of water by a pump spray. The solution should then stay in the wall without scrubbing for several minutes before wiping it away. If the mold doesn’t move, then bleach isn’t enough.

However, bleach is not suitable for porous surfaces such as wood. Whilst it might be fine for sinks or bathtubs, mold spreads deep into porous surfaces that bleach cannot touch. It might clear some mold stains from the surface, but it won’t do anything to kill the mold from the source.

Bleach is also said to increase the risk of health problems. When exposed to large amounts of bleach, this can affect the lungs, eyes, mouth, and skin. It can cause chest pains, vomiting, breathing problems, and can trigger asthma attacks.

How To Kill Mold

  1. Make sure to keep the room well-ventilated if indoors. Angle a fan so the fumes can blow towards the window.
  2. Wear protective gear including gloves, goggles, and masks. Also, wear clothing that you won’t mind will get dirty or potentially stained. Your clothes should cover all of your skin.
  3. Read the instructions of your mold killer product carefully. This will warn you about potential damage to surfaces and how to use the product.
  4. Follow the instructions, making sure to mix the solution with water if necessary. Most mold killers require a pump spray, sprayer, or garden hose.
  5. Some mold killers won’t require this, but you may need to scrub away tough stains. Leave the solution on the surface for 10 minutes before scrubbing if the stain doesn’t go away.
  6. Some products are mold killers, some are mold stain removers, and some are a mixture of both. Make sure you know this beforehand.

How To Prevent Mold

Here are our top tips to avoid mold in your home:

  • Keep your rooms well-ventilated if there is a chance of humidity. This means keeping the windows open when you shower or have a bath, when you’re cooking, and when your washing is hanging up to dry inside. Ventilation fans are useful for this, too.
  • Invest in a dehumidifier or air conditioner if you live in a humid climate. The humidity level should be kept below 50%.
  • Don’t use carpets in wet areas like kitchens or bathrooms. The water will evaporate and have to go somewhere - which is usually on to the walls - and will turn into mold over time.
  • Also, avoid carpets in basements. Area rugs are much easier for providing similar warmth as a carpet but can be cleaned and washed easily if they get wet.
  • Make sure to dry wet rugs and bath mats.
  • Don’t leave damp clothes in the washing machine for too long as this is an ideal environment for mold to grow.
  • Open the windows and doors when the dryer is on. If possible, hang your wet clothes outside.

Safety / Eco-Friendliness

As always when dealing with chemical products, you need to wear the right clothing and protective gear. This includes protective eyewear, masks, gloves, long-sleeved shirts, and long-sleeved pants. This is to protect your skin from harm if you come into contact with the product.

Also, you need to prepare the area. Outdoors areas won’t generally need preparation (because what better ventilation than the great outdoors). Indoor areas will need open windows and a fan to push the fumes outside. In serious cases of black mold, you should duct tape doors to prevent contamination.

Whilst not all chemical products are eco-friendly, people who are conscious of not affecting the environment should look for mold killers and stain removers with biodegradable formulas.

Best Mold Killer For Wood - FAQ's

What can I spray on wood to kill mold?

Mold killer is the best option for killing mold on wood surfaces. These surfaces include decking, sliding, fences, gates, and garden furniture.

Mold killer and stain removers are designed specifically for porous surfaces as they can seep through the surface to the root of the mold.

Depending on the product, you should use a pump spray, electric sprayer, or a regular garden hose to target the mold-ridden wood surface.

Does vinegar kill mold on wood?

For indoor surfaces with small mold-affected areas, vinegar is a useful home remedy for killing mold. Vinegar can be sprayed onto a wooden surface and left for an hour.

Then, wipe away the vinegar with a damp cloth to see the results. If the mold is still there, you can try again. If the mold refuses to budge, you will need something more powerful.

However, vinegar won’t be suitable for some porous outdoor wooden surfaces such as decking, which will need something more chemical.

Vinegar is also most effective for removing mold stains or killing mold from non-porous surfaces such as bathtubs or toilet seats. Also, vinegar won’t be suitable for killing mold on soft surfaces such as rugs or clothing.

What does black mold look like on wood?

Each patch of black mold will look different on wooden surfaces. Generally speaking, black mold usually appears gray or green on wood.

At the beginning of the spread, the mold will have white areas which indicate the contamination and spread of the spores. The longer the mold is left untreated, the darker it will become, giving it the characteristic “black” color.

Is black mold on wood dangerous?

Black mold isn’t toxic, but it can be the cause of some health problems. People with breathing problems such as allergies or asthma should avoid exposure to black mold as the spores will trigger bad breathing.

The more exposure one has to black mold, the more dangerous it becomes. However, black mold isn’t the most dangerous mold, and can generally be treated with the appropriate chemicals such as mold killer designed specifically for porous surfaces like wood.

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