Regular Deck Cleaning Charleston SC removes algae and mold from the surface, eliminating a major slipping hazard. It also keeps your family and friends healthy, preventing the respiratory issues that mold can cause.

A scrub brush and hose are sufficient for basic cleaning, although a power washer is faster for rinsing. Choose a fan-tip nozzle with a 40-to 60-degree spread for best results.

For wood decks, a regular inspection is necessary to keep the structure safe and prevent structural damage. Check for rot, loose boards, nail pops, and other issues that can weaken the deck and lead to dangerous conditions. It’s also a good idea to inspect the foundation and footings of the deck to make sure they are in good shape. Check that the foundation bolts are at the proper depth and that all hardware attached to the footings is free of corrosion. Finally, test all outdoor furniture and ensure that the chains on swings and hammocks do not present a tripping hazard.

Look for rotting, soft, or discolored wood that could be caused by mold or mildew. If you find any, treat them right away with a wood preservative to halt further damage. Also, if the deck is located in close proximity to trees, make sure you trim surrounding foliage so it doesn’t overhang and cause moisture buildup on the deck.

Loose nails and screws should be tightened or replaced to reduce tripping hazards. If they are rusted, they can cause further damage to the wood. Look for signs of insect infestation, including holes in the wood or insects crawling around. Lastly, if the deck is located near water, look for standing water that may indicate a drainage problem or a leak in the house.

Aside from a thorough visual inspection, the most effective way to clean a deck is to sweep it regularly to remove dirt and debris before it has a chance to stain or mold. A broom and/or leaf blower are great tools to use, but make sure you choose one that is not too aggressive and will not strip the protective coating on your deck. During the inspection process, it is also a good idea to choose a day with clear, breezy weather to allow the deck to dry thoroughly before applying any cleaning solution. You should avoid using chlorine bleach on your deck, as it will damage the wood fibers and corrode metal fasteners. It is best to use an oxygen bleach or hydrogen peroxide alternative, which are safer for the environment and just as effective against mold and mildew.

Clean Debris

Regular deck cleaning removes slippery mold and mildew, reducing the risk of slips and falls. It also helps protect the wood, keeping it healthy and extending its life. Before you begin, clear the deck of furniture and grills to create a work zone. Sweep away dirt and debris with a broom or leaf blower, concentrating on corners, crevices, and edges where grime often builds up. Then, use a garden hose or pressure washer to rinse away any remaining dirt and debris.

When using a pressure washer, carefully follow the instructions on the label to avoid damaging your deck or surrounding vegetation. Aim the nozzle at a consistent distance from the surface, sweeping in a direction that matches the grain of the wood. This prevents moisture buildup that can rot the wood and lead to cracking and warping. For routine or lightly soiled decks, a simple solution of water and detergent can be highly effective.

For a more thorough clean, use a commercial deck cleaner or a homemade solution of white vinegar or oxygen bleach and water. Before applying the cleaner, read the label for dilution recommendations and other safety information. If you choose to use a commercial cleaner, apply it according to the manufacturer’s instructions.

The best time to clean a deck is on a sunny, dry day. Avoid doing this task when it is raining or windy, as it may cause the cleaning solution to soak into the wood and stain it. It is also important to ensure that the deck is completely dry before beginning the next step.

When preparing to mop, choose a non-toxic and biodegradable deck cleaner such as Pine-Sol (available on Amazon). Mix 1 cup of Pine-Sol in two gallons of water and apply it to the deck with a coarse, stiff broom or brush. Avoid using Pine-Sol on decks that are unsealed, waxed, or oiled, as the cleaner can damage or discolor them.

Prep the Surface

Ensure that the deck is free of loose dirt, nails and screws before proceeding with cleaning. If these items are left exposed they may be displaced during the cleaning process or become embedded in the wood, leading to additional damage and staining. Likewise, ensure that any movable furniture is removed from the deck before beginning. Lastly, cover surrounding plants and surfaces with drop cloths to protect them from accidental paint splatters.

Next, determine the best deck cleaning method to use. For light soiling and stains, a basic mixture of water and vinegar can be effective. More severe stains, such as oil or mildew, may require a stronger product. For these cases, choose a commercially available cleaner formulated specifically for composite decks.

Before applying the cleaning solution, read and follow the manufacturer’s instructions. For best results, apply the product evenly and scrub thoroughly. For stubborn stains, allow the cleaner to sit for the recommended time and then scrub again using a stiff brush.

After scrubbing, rinse the deck using a garden hose or power washer on a low setting. Be sure to keep the nozzle at least 24 inches away from the surface to avoid damaging it. For maximum efficiency, start in an inconspicuous area and work your way across the deck, ensuring even coverage.

For deeper stains, such as grease or food, a common household item like Napisan can be used. This product works by drawing existing oils and saturates from the timber grain, effectively breaking down grime. Be sure to rinse well after using this method, as repeated applications can result in a white film.

If necessary, sand the deck using a medium-grit sandpaper or floor sander to smooth out any rough spots and provide an even surface. This step is especially important before painting, as it helps to create a uniform surface and promote better adhesion.

Finally, once the deck is clean and dry, carefully inspect it for any areas that need to be re-cleaned or resanded. By taking the time to perform this simple step, you can be confident that your deck is ready for paint or stain.

Clean the Surface

Cleaning a deck should be done prior to staining and can be accomplished using a pressure washer, broom or a scrub brush. It is recommended that you use a non-chlorine bleach cleaner designed for preservative treated wood. Many commercial products are available in the marketplace and it is important to follow the product manufacturer’s instructions for use.

Before starting to clean, clear the deck of furniture, grills and other items and protect shrubs and plants with a plastic drop cloth. It is also a good idea to sweep or blow the deck to remove all debris.

If you are going to use a pressure washer, follow the manufacturer’s instruction for the type of wood cleaner used and the distance that the spray tip should be from the surface being cleaned. It is also a good idea to use a fan spread and to spray only the deck surface, not the surrounding area.

For mild stains, you can use a standard household liquid dish detergent diluted in water. The solution should be sprayed onto the deck in small areas and allowed to set for the time period directed by the cleaner manufacturer. This process can be difficult and time consuming, but it will eliminate dirt, mildew, mold, moss and other organic growth.

Bleach-containing cleaners should never be used on a stained wood deck. Excessive use of chlorine bleach can raise the fibers of the wood leaving an unnatural, whitewashed look and it can also corrode metal fasteners, screws and nails. Bleach also does not eliminate the spores from which mildew and mold grow.

If you have a lot of dirt, grime and mold on your deck that requires a more aggressive approach, you can use a non-chlorine wood cleaner such as a phenolic or methylated spirits solution. Apply the solution to a sprayer or a brush and apply it to the deck in small areas. Let the cleaner set for the period of time indicated by the manufacturer and then scrub the surface with a stiff bristle brush parallel to the grain. If necessary, you can rinse the deck with a hose or clean it by hand with a scrub brush and water.