How To Get Rid Of Black Mold On Wood Deck

Black Mold on Decks

Is black mold growing on your wood deck? Are you frustrated by how ugly it is making your once wonderful deck? There are some simple steps you can take to get rid of that annoying mold and keep it from coming back. Wouldn’t it be nice if there was a way to make unhealthy black mold from ever coming back – for good?
Well, let’s explore how we can effectively remove your existing mold and prevent future growth. But first, we think it’s important to understand why  mold is forming in the first place. (Give a man a fish and he’ll eat for the day, teach him how to fish and he’ll eat a lifetime)
Knowing the root causes and solutions will help you come up with ways to stop or limit its appearance in the future. The first thing to know is that mold thrives in damp, dark environments where organic material is present; decks made out of wood provide both the right environment and food source for the spores to grow. When your deck’s wooden surface absorbs moisture – such as during rainstorms or when left unprotected over time – it becomes vulnerable to mildew formation. In this article, we’ll look at different methods of removing your existing mildew and preventing further outbreaks on wood decks – so let’s dive in.

Identifying Black Mold

First, It’s important to know what you’re dealing with before attempting any cleanup or removal. Black mold is often found on outdoor wood decks, where moisture and humidity are common. The first step in getting rid of black mold on your deck is to properly identify it. You can look for telltale signs like discoloration along the surface of the wood, as well as an unpleasant odor that may accompany it (please review the photos below). Now, if you think you have identified black mold, it’s time to get ready. Do not attempt to touch or disturb the area until you have implemented the safety precautions listed below.

Safety Measures

The first thing to know, if you don’t proceed carefully, the black mold/spores, when disturbed, have the ability to travel throughout your yard or even onto/into your house. So let’s get you ready:
You will need:
  • Gloves
  • mask/ideally an air purifier for proper filtration
  • goggles
  • boots
  • something protective for your clothing, like a throwaway rain poncho you can pick up at the Dollar Store
Dispose of any materials that were used in the process responsibly instead of simply throwing them out with regular trash.
Avoid inhaling airborne spores by using an air purifier during and after the cleanup process. Taking these precautions will keep you safe from potential harm caused by black mold on your wood deck. Additionally, it also reduces the risk of health complications coming from exposure to toxins released by the mold itself. Caution and taking your time is always the best way to go.

1. Home Purifier

MSA3 Air Purifier for Home
MSA3 Air Purifier for Home

MSA3 Air Purifier for Home

  • Cleans rooms up to 840 ft² in as little as an hour or 500 ft² in just 36 minutes.
  • Use in any room or enclosed spaces – living rooms, kitchens, bedrooms
  • 3-stage filtration design: Pre-Filter – Captures Hair, Pet Dander and Fiber; H13 TRUE HEPA Filter – Captures Smoke, Allergens, Dust, Pollen; Activated Carbon Filter – Quickly captures and neutralizes Bad Smells, Pet Odor 
  • Filters out 99.97% of particles as small as 0.3 microns and air pollution PM 2.5 (particulate matter). 
  • 100% Ozone Free Air Cleaner. Certified to ETL, FCC, CE, RoHS.
  • 90-Days Return & 2-Year 100% Customer Satisfaction Service! 

Cleaning The Surface

Use your garden hose or pressure washer to wash down the deck. Don’t get too close to the pressure washer stream, or it could damage the wood. Wash away any loose dirt and debris that may be causing moisture build-up where mold grows.

1. Sun Joe SPX3000 Pressure Washer

Sun Joe SPX3000 2030 Max PSI
Sun Joe SPX3000 2030 Max PSI

Pressure Washer By Sun Joe 

  • 14.5-Amp/1800-watt motor generates up to 2030 PSI 
  • Use on homes, buildings, RV’s, cars, trucks, boats, decks, driveways, and patios 
  •  Automatically shuts off when trigger is not engaged 
Once you’ve completed this step, grab some bleach and detergent solution to scrub away the remaining mold.
  • Mix one part oxygen bleach with two parts water in a bucket, then
  • Add a few squirts of dish soap to make it more effective against stubborn stains

With a stiff bristle brush, start at one end of your deck and work your way across until all surfaces have been cleaned thoroughly. Aim for hard strokes when tackling particularly tough spots. When you’re finished, rinse off all your cleaning products with clean cold water – leaving no residue behind!

After drying completely, take steps towards preventing future outbreaks by regularly maintaining your deck and keeping its surroundings dry. That way, you’ll never again have to worry about pesky black mold returning.

Stubborn Stains

The first step for getting rid of those stubborn stains on your wood deck is to determine if you have a sealed or unsealed wood that will let you determine what the right cleaning products you need to get rid of those pesky black mold stains.
Start by scrubbing away any loose dirt and grime using a stiff brush before applying the appropriate cleaner according to manufacturer instructions. This should loosen up the particles enough for them to easily come off during rinsing. If there are still some stubborn spots remaining after rinsing, try treating them again with an extra dose of cleaner and then let soak for several minutes before trying another round of brushing and rinsing.
With a little bit of elbow grease, those tough black mold stains should be removed from your wood deck in no time. Now that you’ve gotten rid of the ugly visual blemishes caused by black mold on your outdoor wood deck, it’s time to move on to killing the source: The mold and mildew itself.

Killing The Black Mold And Mildew

When you first notice black mold on your wood deck, it’s time to take action. Killing the unwelcome growth is essential to ensure that the outdoor area remains safe and usable.
  1. To begin this process, start by gathering supplies like a stiff brush with hard bristles, protective gloves, goggles, an air mask, and cleaning detergent or bleach.
  2. Once you have all of these items in hand, mix either a solution of 1 cup of bleach per gallon of water or one-quarter cup of laundry detergent for every gallon of warm water in a bucket.
  3. Dip the brush into the solution before scrubbing away at the affected areas until all mildew has been removed from the deck boards.

Be sure to wear your safety equipment throughout this process as mold spores can be inhaled if left unchecked. After thoroughly brushing off any loose particles, spray down the entire deck with plain water and let dry completely before storing any remaining cleaner away from pets and children. This will help ensure that any lingering bacteria are eliminated while preventing future outbreaks of black mold on your wood deck.

Cleaning Black Mold Using Vinegar or Chlorine Bleach

You can disinfect your deck with vinegar or bleach, but while both are effective, there are differences between them.
Vinegar is all-natural and eco-friendly, and you don’t have to worry about fumes or spills. On the other hand, chlorine bleach has strong antibacterial properties and powerful fumes and is best used outdoors. Calyptus 45% Pure Super Concentrated Vinegar

45 Percent Vinegar

45 Percent Vinegar for Getting Rid of Black Mold.
45 percent vinegar

Belle Chemical 45% Pure Vinegar – Concentrated Industrial Grade (1-Gallon)

  • 9X stronger than vinegar – dilute or use full strength
  • Makes 9 gallons
  • not for human consumption.
The process for using either one is fairly simple. First, you’ll need to make sure your wood deck is dry before applying any type of cleaner or sanitizer. If it’s wet, wait until it dries out before proceeding.
Once the area is dry, mix together equal parts vinegar and water (or use straight, undiluted vinegar if you prefer). Use a scrub brush or mop soaked in this solution to vigorously clean the affected area. This will help loosen up dirt and debris as well as kill off any active spores present in the area. For stronger disinfection power, add half a cup of chlorine bleach per gallon of water when cleaning the surface with a sponge or cloth.
However, please keep in mind that chlorine bleach should only be used outside since its fumes can quickly become overpowering indoors. Both solutions work best when applied directly onto surfaces with a damp rag or mop rather than spraying from a bottle so that you have more control over how much gets into crevices and corners.
When finished, rinse thoroughly with clean water before allowing everything to air dry completely overnight. With these tips in mind, you’re now ready to move on to applying a fungicide that can help prevent further outbreaks of black mold on your wood deck!

Applying Fungicide

The sun sets in the sky, casting a golden light over the wood deck as if it was drenched with honey. The outdoor area is no longer tranquil, however — an unsightly black mold has taken hold on its surface and must be removed immediately.
To do this efficiently, applying a fungicide to the affected areas of the wood deck is essential. Firstly, choose a fungicide that will eliminate the mold from the wood safely. Look for products specifically designed for use on exterior surfaces such as decks. Be sure to follow any safety instructions listed on the label before proceeding.

Fungicide Stain Remover

RMR-86 Pro Instant Stain Remover for Getting Rid of Black Mold.
RMR-86 Pro Instant Stain Remover

RMR-86 Pro Instant Stain Remover

  • removes stubborn stains in just seconds
  • Created for professional use 
  • Ready to use
  • for use on attics, crawlspaces, wood, concrete floors, brick walls, plywood, drywall, and decks 
Once you have chosen your product, begin by sweeping or vacuuming away any loose debris or dirt from where you plan to apply it. Next, put on protective gear like gloves and glasses before mixing up your fungicide according to package directions. Carefully apply it directly onto the affected spots of your wood deck using either a spray bottle or brush applicator until completely saturated. Finally, allow adequate time for the fungicide to take effect; make sure not to disturb it while drying out so that it can work effectively against those pesky patches of black mold! Sanitizing the area with hydrogen peroxide follows the fungicide – but more on that later…

Sanitizing The Area With Hydrogen Peroxide

Now that you’ve applied a fungicide to get rid of the black mold on your wood deck, it’s time to sanitize the area with hydrogen peroxide. This outdoor solution is easy and convenient to use and can help kill any remaining bacteria or spores in the affected area.
To start, combine one part hydrogen peroxide with three parts water in a spray bottle. Shake well before each use and then generously mist onto the infected area of your deck. Allow this mixture to sit for 10-15 minutes while scrubbing away at the stubborn spots with a brush or cloth.
Afterward, rinse off thoroughly with clean water to remove all traces of chemical residue from the surface of your deck. By taking these additional steps to sanitize your wood deck, you are bettering its chances of being free from future mold growth and restoring it back to its original condition.

Preventing Future Black Mold Growth

Like a serpent that creeps silently upon its prey, black mold on wood decks can be difficult to spot until it’s too late. To remove the existing mold and prevent future growth, it is important to understand how outdoor wood surfaces are affected by moisture. By taking steps such as cleaning regularly, choosing water-resistant woods, and sealing with oil-based stains, you will protect your deck from further mold infestation.
To start, clean any visible mold off of the surface with a solution containing 1 cup bleach mixed in 1 gallon of warm water. Allow this mixture to sit for 10 minutes before scrubbing it away. Once all traces of mold have been eliminated, rinse the area thoroughly with fresh water. This step should be repeated every few weeks during periods when there is an increased risk of humidity or rain.
Woods that are naturally resistant to rot and decay – like cedar and redwood – make excellent choices for outdoor structures because they are less likely to absorb large amounts of moisture which can foster fungal growth.
Applying an oil-based stain or sealer will help lock out additional moisture while providing UV protection against fading caused by sunlight exposure over time. By following these simple steps, you can keep your deck looking beautiful season after season without fear of unwelcome guests like black mold returning to ruin your enjoyment.
Ready now for the next step: sealing the deck with oil-based stain so that it stands strong against whatever mother nature throws at it!

Sealing The Deck With Oil-Based Stain

Sealing a wood deck is the best way to protect it from black mold. An outdoor oil-based stain will provide long-lasting protection and keep your deck looking great for years.

Oil-Based Sealer

Seal-Once Nano+Poly Penetrating Wood Sealer
Seal-Once Nano+Poly Penetrating Wood Sealer

NANO + Poly Wood Sealer

  • Water-based polyurethane wood finish 
  • Wood Sealant
  • protects against water damage
  1. Make sure that you have all the necessary supplies on hand, such as a sealant, brush, roller or sprayer, and gloves.
  2. Remove any furniture and other items that may be in the way of the deck staining process.
  3. Use a garden hose or pressure washer to clean the surface of your deck to remove dirt and debris.
  4. Dry completely
  5. Apply a coat of sealant with either a brush, roller or sprayer depending on preference.
  6. Allow this first layer to fully cure before applying another coat if needed.
  7. Rinse off brushes and rollers after use to prevent them from getting clogged up with residue.

To ensure your deck remains free of black mold for years to come, regular maintenance should include resealing every few years when needed. This can help maintain its beauty while also protecting it from harsh weather conditions. Taking these steps will help keep your wooden deck in perfect condition so you can enjoy spending more time outdoors! With proper sealing complete, an inspection for damaged boards should be done next to determine what needs replacing or repair work completed.

Replacing Boards Damaged By Black Mold

Black mold on a wood deck is like an infection that slowly spreads, deteriorating the outdoor area and making it unusable. Replacing damaged boards due to black mold can be daunting for homeowners, but taking care of this problem early will save them from having to completely replace their entire deck in the future.
The first step to replacing any damaged boards is identifying which ones need to be removed. This may seem overwhelming at first, however, if you take time to look closely, you’ll soon find the affected areas with ease. Once identified, all that’s left is removing those boards and installing new ones.
Getting rid of black mold on a wood deck should not feel like an impossible task; by tackling small issues as they arise and regularly inspecting for signs of further damage, you can keep their decks looking great for years to come. With these steps in mind, anyone can restore their outdoor space back into something beautiful without needing any professional cleaning services.

Cleaning Services

Sometimes, you just don’t have the time or the desire to tackle a mold issue on your deck.
Cleaning Services or Deck Companies offer a one-stop call or email to get the black mold removed from your deck. This is their business, cleaning “stuff.” They should be able to safely and efficiently remove the black mold from your deck. Their folks will know the right chemicals to use, adhere to safety issues, and usually be able to get rid of any stubborn stain issues in one visit. Your cost will depend upon the size of your deck and how advanced your black mold issue is.
Usually, they are an affordable option and worth the investment if you want to get rid of black mold once and for all. Our suggestion is to add up the cost of the supplies, gloves, goggles, chemicals, renting a power washer, etc, and make a guesstimate of how much time you think it will take vs the quotes you receive from the Cleaning or Deck Companies. They’ll usually give you a ballpark price based on the sq footage and, if you can, email them a photo of the deck’s condition. They will also offer the option of applying sealers or stains to help protect against future infestations. This is a one-and-done solution if you have the extra money.

Rent a Pressure Washer

To put it simply, garden hoses often don’t have the proper water pressure to attack mold removal on your deck. You can try the age-old trick of putting your thumb over one half the hose opening to increase the water pressure, but chances are, it still won’t be enough.
Before using the pressure washer, make sure you have properly prepped as well as cleaned your deck with a mild detergent solution and bleach mixture. ( Review the safety measures above before moving forward)
Take your time and start at a low-pressure setting to avoid damaging any deck boards. Once you’ve zeroed in on the proper water setting, move up and down with the wand slowly as needed until you reach an appropriate level that gets rid of the majority of the fungi without causing harm to the boards underneath. Be sure to use protective eyewear and clothing while operating the machine.
After completing the job, apply some sort of sealer or coating, such as paint or waterproofing agent, to protect against future growth and infiltration. With proper preparation and usage, using a pressure washer can be an effective method for how to get rid of black mold on wood decks – giving them back their original luster and shine! Now let’s look into natural solutions for black mold removal that don’t require power tools or harsh chemicals.
A Black Mold Free Backyard Deck.
Backyard Deck mold free

Natural Solutions For Black Mold Removal

Mold on wood decks can be a big problem, but it doesn’t have to be. There are natural solutions that can help you get rid of black mold quickly and safely.
  • Vinegar
  • Baking Soda

Vinegar

One option is to mix equal parts vinegar and water in a spray bottle and apply the mixture directly onto the affected areas. Let it sit for about 30 minutes before scrubbing it with a brush or sponge. This method works best when used outside during sunny days because the sun will dry out any remaining moisture from the solution, which helps inhibit further growth.

Baking Soda

Another way to treat black mold is by utilizing baking soda. Create a paste of baking soda and warm water and spread it over the area where there is visible mold growth. Leave it on for an hour or two then scrub off with a damp cloth or brush until all traces of the paste have been removed.
Baking soda also has some deodorizing properties, which makes this method great for removing musty odors as well. These natural remedies work effectively against small amounts of surface-level mold, but if your decking has become heavily infested, then you may need to consider alternatives such as composite materials or treated lumber instead.

Alternatives To Wood Decks

Wood decks can be a great way to enjoy the outdoors, but they come with their own share of maintenance. From defending against rot and insect damage to dealing with black mold – it can all become too much for some people. But that doesn’t mean you have to give up on outdoor leisure altogether!
Believe it or not, there are many alternatives to wood decks that require little-to-no upkeep and provide an equally enjoyable experience. If you’re looking for something more eco-friendly than traditional lumber, composite decking is a great option. Made from recycled materials like sawdust and plastic bags, these low-maintenance boards look almost identical to real wood without any of the associated hassles. Composite decking won’t need painting or staining either – simply spray off dirt with your hose every now and then and the vibrant colors will remain intact year after year.
Finally, if you want something even easier (and perhaps more luxurious) try out stone pavers. These unique stones come in various shapes and sizes so you can create custom patterns while adding extra grip to prevent slipping when wet. They also don’t absorb moisture like wooden planks do which makes them less prone to rot or mildew buildup over time. Plus, installing stone pavers requires no special tools or skills making them perfect for DIYers who just want a simple solution with minimal effort involved.
As you can see, there’s no need to settle for a run-down wooden deck when there are plenty of other options available today! With the right material choice, you’ll be able to relax outside worry-free while still enjoying all the benefits of having a beautiful outdoor space.

Frequently Asked Questions

Can I Use A Pressure Washer To Clean The Black Mold Off The Deck?

Removing black mold from a wood deck can be like scaling the face of a mountain – daunting and time-consuming. But with the right tools, it doesn’t have to feel that way. One of those tools is a pressure washer, which many homeowners ask if they can use for this particular task. Pressure washing may indeed be an effective method of removing black mold on decks. The strong stream of water will blast away any dirt and debris build-up, as well as break apart thick patches of mold growing in hard-to-reach areas.
It’s important to note, though, that although it may help remove existing growths, it won’t prevent future ones from appearing, so long-term solutions should also be considered, such as applying sealants or cleaning agents.
For those looking for an affordable solution to eradicate mold on their wood decks, pressure washing could prove beneficial – provided all safety measures are taken beforehand. In addition to wearing protective gear when using the machine itself, one must ensure the nozzle isn’t angled too closely at certain surfaces in order not to damage them further down the line. With these precautions in place, you’ll be able to get rid of unsightly mildew stains without breaking the bank!

How Often Should I Treat The Deck With A Fungicide To Prevent Black Mold Growth?

Mold on wood decks is an all-too-common problem that can detract from the beauty and safety of your outdoor living space. To protect yourself, your family, and your deck, it’s important to know how often you should treat the deck with a fungicide to prevent mold growth.
The frequency at which you’ll need to use a fungicide depends largely on factors like climate, sunlight exposure, moisture levels, and typical traffic patterns.
In wetter climates or in areas with little direct sun exposure, more frequent treatments may be necessary. You should also consider applying a fungicide after any heavy rains or significant snowfalls, as well as during periods when high humidity persists over several days. As always, be sure to follow label instructions regarding application rates and timing for maximum effectiveness against black mold growth on your decking surface material.
By taking proactive steps such as regularly treating your wooden deck with a quality fungicide, you can help guard against black mold formation while preserving its natural luster and resilience for years of enjoyment.

What Are The Long-Term Effects Of Using Chlorine Bleach Or Vinegar To Disinfect The Deck?

It’s estimated that over 70% of decks in the United States are made from wood, making them susceptible to black mold growth. While chlorine bleach and vinegar can be effective short-term solutions for disinfecting a deck affected by black mold, it’s important to consider the long-term effects these treatments may have on the structure and surface of your wooden deck. Using chlorine bleach or vinegar as an antimicrobial agent can make your deck look clean but don’t expect any lasting results.
Chlorine bleach is incredibly harsh on wood surfaces, causing discoloration and fading along with potentially damaging the material itself. On top of this, you’ll need to reapply regularly, which means spending more money on both cleaning supplies and maintenance costs.
Vinegar is a better option than chlorine bleach when it comes to treating black mold on wooden decks. However, its effectiveness is limited. It won’t damage the wood like other chemicals do and mildew and spores could still linger if not treated properly.
Additionally, regular use of vinegar can cause build-up over time, so it will need to be rinsed off completely after each treatment or it could lead to corrosion and staining.
Investing in professional fungicides may offer a safer solution that lasts longer while preserving the integrity of your wood decking materials. These specialized products contain active ingredients designed specifically for eliminating bacteria and fungi without damaging or discoloring the wood – plus, they typically come with warranties should something go wrong down the line.
With proper application every few months, you can protect your outdoor space from future growths of black mold all year round!

Is There A Natural Solution That Is Just As Effective As Using A Fungicide?

Yes and no. Let’s look at the options. On one hand, natural solutions are often safer than their chemical counterparts since they don’t contain harsh toxins. They’re also much easier to use; all you need is some basic household items like baking soda or vinegar, which can be found in any grocery store. Plus, these methods are usually cheaper than buying chemicals from hardware stores.
However, there are some downsides to going with an all-natural approach. For one thing, natural solutions tend to have less long-term effects when compared to commercial products — meaning that if the problem persists after application, then additional steps may be needed. Furthermore, results may not always be as immediate or thorough as those achieved by using a specialized product designed specifically for your issue.
So what’s the verdict? Ultimately, it depends on your individual needs and preferences. If you’re comfortable taking extra steps throughout the process and being patient while waiting for results, then opting for a natural solution might be best suited for you. On the other hand, if time is of the essence and/or you require a quick fix with lasting power, then investing in a professional-grade treatment could be worth considering too.

Summary

Let’s face it, no one wants to do this job, it just seems like one of those pain in the…..jobs that we all put off until it’s usually starting to get out of hand. There are several cost-effective and natural methods you can use without costing yourself a fortune.
Using a pressure washer is certainly a solution, but comes with the potential of damaging your deck if it is used constantly for this problem. Instead, it’s best to treat the deck with a fungicide every few months in order to prevent further growth. Although chlorine bleach and vinegar may provide temporary relief from the mildew, they could potentially cause long-term damage if used too often. Fortunately, there are other options available. Natural solutions such as baking soda and hydrogen peroxide provide just as much efficacy when dealing with black mold on wood decks as harsher chemical treatments do.