Knowledge Builders

how do you powerwash a wood deck

by Ernestine Jacobi DDS Published 3 years ago Updated 2 years ago
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  • Select a Tip and Pressure Setting. Use the lowest possible pressure that is still effective. ...
  • Test the Pressure Washer Settings. Using a pressure washer takes a little practice. Test your pressure and its effectiveness in an inconspicuous area, such as a stair tread or corner.
  • Power Wash the Deck. Engage the trigger while holding the wand tip a couple of feet away from the deck surface, then lower the wand closer as needed.
  • Apply a Chemical Stripper/Brightener (Optional) If the wood is badly darkened or stained with mildew, washing with a deck-cleaning solution that includes sodium hydroxide can help brighten it.

Part of a video titled How to Properly Pressure Wash a Deck - Mi-T-M 2022
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The key is to use a sweeping motion along the grain of the wood and to keep the nozzle moving at allMoreThe key is to use a sweeping motion along the grain of the wood and to keep the nozzle moving at all times pull the trigger at the beginning of your first pass directing.

How much does it cost to power wash a deck?

To power wash, stain, and seal your deck, expect to spend between $0.50 and $1.50 per sq. ft. or $0.95 per sq. ft. on average.

Should you pressure wash a deck before staining?

Traditionally, deck sealing requires the following process:

  • Apply Deck Cleaner
  • Pressure Wash to Remove Dirt and Soap
  • Allow Deck to Dry
  • Apply Sealant or Stain
  • Allow Deck to Dry for 24 to 48 Hours

What is the best deck wash to use?

The Top-Rated Wood Deck Cleaners

  1. Restore-A-Deck Cleaner Rating. Restore-A-Deck is the first product on the market that offers both a Step 1 Deck Cleaner and a Step 2 Deck Brightener in the same kit.
  2. Gemini’s Restore Cleaner Rating. Gemini’s Restore Cleaner and Brightener system is a powerful “eco-friendly” two-part restoration system. ...
  3. Defy Wood Cleaner Rating. ...

More items...

How to power wash a redwood deck?

  • Work with the grain of the wood to spray the detergent off of the deck or fence.
  • When rinsing, start at the top and work down to prevent streaks. ...
  • After you've sprayed off the cleaner, let the deck or fence dry for 48 hours before applying a stain or sealer.

More items...

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Can you power wash a wooden deck?

For cleaning a wooden deck, you'll be best served by using the lowest pressure setting that's still effective. For soft woods like cedar or pine, this is usually about 500 to 600 psi. For harder woods, it can go up to 1200 to 1500 psi. Choose the right tip to use as well.

How do you power wash a deck without damaging the wood?

Use a broom to brush off any debris from the surface. Then, using a medium power washer, aim the nozzle at a 40-degree angle and gently mist the surface. Once wet, you can apply a cleaning solution that is designed for pressure washers and wooden surfaces using a low-pressure soap nozzle.

What do you use to clean a deck with a power washer?

Switch to the widest spray nozzle (not counting the one you just used for the soap). Begin pressure washing the deck, moving with the grain of the wood in wide sweeping motions. Keep the nozzle about two feet away from the surface and move closer as needed. Don't get closer than 6 inches, or you could damage the wood.

Can I just power wash my deck?

A pressure washer is a straightforward machine that can clean very well with only water. However, it can ruin your deck if it's not used properly. This is a tool that is powerful enough to etch brick, but in the right hands, it can be gentle enough to wash siding.

Do I need to sand my deck after pressure washing?

Do you need to sand a deck after power washing? If you are power washing to remove the surface of your decking, then yes, you'll need to sand your deck after power washing.

What do you clean a wood deck with?

To clean your deck, combine 240 ml vinegar with 3.8 litres of water. Sprinkle baking soda on any mildewed timber and use the vinegar and warm water to scrub over all the boards. Borate is also a natural cleaner and versatile for indoor or outdoor cleaning. Use a ratio of 240 ml of Borax to one gallon of water.

How often should you power wash a deck?

once a yearFrequency. Most home maintenance contractors recommend power washing your deck once a year. An annual wash will keep your deck in optimal condition, cutting down on accumulation of dirt, mildew, or algae growth.

Can I clean my deck with Dawn?

Liquid dish soap (ammonia-free) is safe for use on cleaning your deck when mixed with a little warm water.

Can I clean my deck without a pressure washer?

Clean concrete without pressure washer using baking soda Mix in 1/8 of dish-washing detergent; Spray on your concrete deck and allow it to sit for half an hour; Scrub thoroughly and rinse with a hose. Apply a coat of concrete sealer to protect your deck from future stains.

What if it rains after I power wash my deck?

Just as you should not stain a deck that is wet from pressure washing, you do not want to stain your deck immediately after a rainstorm. Rain leaves the wood wet and affects the way that the stain adheres. It is important to only stain the wood after it has dried completely.

How much does it cost to powerwash a deck?

It typically costs $150 to pressure wash a deck. A small deck in relatively good condition can cost as little as $90 to power wash, while a larger 700-square-foot deck in substandard condition that needs hand brushing and power washing can cost $770 or more.

How long should a deck dry after power washing before staining?

A basic rule of thumb for DIY deck builders, homeowners, and professional contractors is that roughly 48 hours is an adequate drying time for a newly washed deck.

How do you pressure wash a deck without removing stains?

If you must pressure wash, use a low pressure setting (around 800 psi), use a wide nozzle (40 degrees or more), hold the nozzle at least a foot away from the deck surface, and keep spraying in a constant motion to avoid gouges.

How do you treat a deck after pressure washing?

After you've pressure washed your deck, you'll need to wait for it to completely dry. Sometimes, this can take as long as 48-hours. Once it's dry, you'll want to sand your deck lightly. This is necessary to remove any splinters or fuzzy patches that pressure washing can cause.

How do I clean my deck without power washing it?

0:051:31How to Clean Your Deck Without Using a Pressure Washer - YouTubeYouTubeStart of suggested clipEnd of suggested clipAlong with a little more soaking time. If the cleaner is evaporating. Too quickly just re wet theMoreAlong with a little more soaking time. If the cleaner is evaporating. Too quickly just re wet the surface with additional cleaner to keep it active. And working. Once you see your desired.

How do you clean decking without a jet wash?

The recipe is pretty straightforward:Add half a cup of baking soda to one gallon of water;Mix in 1/8 of dish-washing detergent;Spray on your concrete deck and allow it to sit for half an hour;Scrub thoroughly and rinse with a hose.Apply a coat of concrete sealer to protect your deck from future stains.

How much does it cost to power wash a deck?

The cost to hire a professional to power wash a deck also varies by decking material. The average cost of power washing a 500-square-foot aluminum deck ranges from $150 to $180 because aluminum stands up well under a heavy stream of water, requiring less time. By comparison, power washing a natural wood deck of the same size costs about $180 to $200. Cleaning a composite deck of the same size costs about $200 to $220.

How much pressure should I use to clean a deck?

To clean a deck, some homeowners choose a washer with a pressure range of 1,300 to 2,400 psi, the same as washing a car. HGTV recommends working with the lowest pressure that cleans your deck materials gently: about 500 to 600 psi for soft woods like cedar or pine, and up to 1200 to 1500 psi for pressure-treated wood.

How to clean a puddle that doesn't drain?

If it doesn’t drain completely, experts recommend removing any standing water with a mop, towels, or a rubber or plastic squeegee. Some homeowners also turn a gas-powered leaf blower on any puddles for five to ten minutes to thin out the water and letting the rest evaporate.

What to cover before power washing?

Before you begin power washing, cover any electrical components, light fixtures, and nearby plants, Lowe’s recommends. (The water won’t hurt the plants, but the pressure might.)

Can you score concrete with power washing?

Check the instructions included with your power washing equipment, and practice using it on an inconspicuous area, such as a stair tread, at low pressure. If you’ve never used this type of equipment before, you can easily score concrete if you don’t know what you’re doing, Amabile says. “You could even damage a house, especially if it’s stucco. You’ll put a hole in it,” he says.

Is a power washer a pressure washer?

Both create high-pressure water from a garden hose, but a power washer heats the water; a pressure washer does not.

Who is the owner of A&J Power Washing?

For expert guidance on how to power wash a deck, we turned to John Amabile, owner of A&J Power Washing of Staten Island, New York, which also serves Brooklyn and northern New Jersey. Amiable has been in business for 30 years and is a member of the Home Improvement Contractors of Staten Island.

Why Bother To Power Wash A Deck?

The simplest answer is you want to power wash a deck to clean it. Removing oxidation, debris and stains can be done with a sander, but that takes a lot of time, a huge amount of effort and the results are often not uniform.

Choosing the Right Setting to Power Wash

The psi (pounds per square inch) at which you power wash the deck will depend on a couple of different factors. First of all, what kind of wood is the deck made of? For softwood like cedar or pine, you’ll want a setting of 500-600 psi. Harder woods can tolerate up to 1200 psi.

Prepping the Area

As with any project, you’ll want to prep the area before you start working on it. Remove any furniture or decorative items that cover the surface of the deck, as well as the surrounding area. You wouldn’t want to risk shooting the power washer at that ceramic flower pot your wife loves so much, right?

Adding in the Deck Cleaner

It’s common for people to add a chemical stripper, brightener, or cleaning solution to the power washer. Most power washers will have a nozzle designed for a cleaning solution. Make sure you choose a cleaner that is suitable for wood, then mix the product according to the manufacturer’s instructions.

Can you powerwash a deck?

Always use a fan-style or brush-like power washing tip when cleaning a wooden deck surface for a wood staining project . Never use a jet-style tip to clean your deck.

Can you spray a deck with a power washer?

Never spray your deck with the power washer tip right near the wood. Power washing can permanently damage the wood by imprinting lines and marks when a sprayer is held too close to the surface. Instead give the deck some space and pull back a bit to allow for an even application.

How do I get mold off a deck?

I did some research and heard people were getting good results from mixing oxiclean with dish detergent to get mold off decking boards. I wet the deck down and scrubbed the mixture over all the deck.

What to do if your deck is not coming up?

If you have an area on the deck that’s not wanting to come up, then you’ll want to scrub it with a brush and the deck cleaning solution , instead of trying to get it up with the pressure washer.

How to use a power washing wand?

How to Use the Wand. The key to power washing is keeping the wand an even distance from the deck boards and moving in a sweeping motion. Never leave your wand in one spot for an extended time. This will make sure that you don’t damage any of the wood fibers.

How much does a pressure washer cost?

The range for a pressure washer runs from $129 for a lower end electric power washer up to over $1,000 for premium, heavy duty pressure washer to buy. If you rent it for the day from an equipment rental, then it could run you between $75-150. The range is close enough that many will choose to buy one and keep it.

How long does it take for a deck to dry before staining?

Then your deck will be ready for stain or paint. You’ll need to let the deck dry out completely before staining or painting it. Depending on humidity and area where you live, this can take a couple of days to a little longer. My next article will talk about staining our deck and how we did it. Update.

What is the best psi for decking?

Usually you want to keep the psi less than 1200. The sweet spot will be 500-700 psi, since most woods used for decking are softer. Pine and cedar are often used for decking and can’t tolerate higher psi.

Can you scrubbing down a deck to remove stains?

Sometimes you can get away with just scrubbing your deck down to remove unwanted stains.

Why do you need to clean a deck with a pressure washer?

This constancy will prevent lap marks. The goal in sweeping a deck with a pressure washer is to remove the dirt, leaving behind no traces of the pressurized water. Too little pressure, or having the fan too far from the water, will result in a less clean surface.

How much pressure should I use to pressure wash composite decking?

As mentioned in previous articles, the pressure you need to wash your deck surface is rarely more than 1,500 pounds per square inch (PSI). This is still enough pressure to do damage to soft wood, and enough pressure to leave lap marks on most composite decking. Remember: less is more when it comes to pressure washing.

What is the degree of angle on a deck fan?

The degree of angle indicates the fan size. Zero (0 o) is typically a stream of water. You will never want to apply a stream of pressurized water to wood. A 40 o to 60 o (degree) tip size is standard for cleaning a deck. Bring the fan to the surface where you want to sweep the deck.

What is pressure washer?

The pressure washer serves as a mechanism to remove embedded dirt and other contaminants. Excessive forces on the wood will remove much more than those pollutants you want removed. The operator's hand will be the only measure as to when too much pressure has been exerted.

How to clean a corner on a pressure washer?

Jettison debris and chemicals can be harmful. Always wear appropriate bodily protection. When approaching a corner, engage the fan and bring it into the corner first, spraying the debris out. Try not to work yourself into a corner, always work out of a corner. In doing so, you may find that you cross grain spray for a short time. This is fine as long as the distance is greater and pressure is lower on the cross grain than with the grain. The best way to remember this is the letter “L.” Long sweep into the corner, and a short sweep out of the corner with the grain.

Does a pressure washer work?

A pressure washer uses less water than a conventional hose and nozzle. Removing the residue of the cleaner is far easier with a pressure washer in that the cleaner is forced off the wood, and merely diluted. Allow the cleaner to do as much of the work as possible.

Can you water down a deck?

Sometimes lightly watering down the deck can assist you in applying and spreading the cleaning solutions. Many solutions should not be allowed to dry on the wood so periodic spraying/misting may be required. Depending on how dirty the deck is, you may see the results immediately.

Cleaning With a Pressure Washer

Follow the pressure washer manufacturer's instructions on the type of wood cleaner to use and the distance the spray tip should be from the surface you're cleaning. For the best results, test the spray pattern and distance on an hidden area of the deck or fence before cleaning.

Pressure Washer Safety

Read and follow all of the manufacturer's safety instructions for your pressure washer. General guidelines include:

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