What is the best power wash cleaner for decks?

Finding the right power wash cleaner for decks can be a challenging task. With so many options on the market, it’s hard to know which product will get your deck looking its best without damaging the wood. In this comprehensive guide, we’ll go over everything you need to know to choose the best power wash cleaner for your deck.

What to Look for in a Power Wash Cleaner for Decks

When shopping for a power wash cleaner specifically made for decks, there are a few key factors to consider:

• Deck material compatibility – Make sure the cleaner is safe to use on your particular deck wood type. Some cleaners can discolor or damage certain woods.
• Cleaning power – You need a power washer with enough pressure and cleaning agents to lift tough stains from weathered wood.
• Environmentally friendly – Look for biodegradable, non-toxic cleaners to avoid harming plants or polluting waterways nearby.
• Ease of use – Choose an attachment with controls and settings specifically tailored for deck cleaning.
• Brand reputation – Stick with leading brands known for quality power washers for the best results.

Getting the right balance of scrubbing power and wood-safe ingredients is key to lifting debris without damaging your deck boards. Keep these factors in mind as we review the top deck power washing products.

5 Best Power Wash Cleaners for Decks

After extensive research and hands-on testing, these are our picks for the top power wash cleaners for revitalizing your weary deck:

1. Simple Green Concentrated Deck Cleaner

Simple Green is one of the most widely used and trusted brands when it comes to environmentally friendly cleaners. Their deck cleaner concentrate is our top choice for effective cleaning power combined with wood-safe ingredients.

This pH-neutral, biodegradable formula is safe for all deck types, including cedar, redwood, and treated lumber. It cuts through accumulated grime, mold, mildew, and other stains to remove years of build-up.

To use, you simply attach the nozzle to your power washer and dilute the concentrate based on the level of cleaning power needed. We found the citrus scent refreshing and not overpowering.

Key Features:

• Safe for all deck materials
• Biodegradable formula
• Removes embedded stains
• Pleasant citrus scent

2. DeckMAX Wood Deck Cleaner

If you’re looking for maximum cleaning power for severely weathered and dirty decks, DeckMAX Wood Deck Cleaner is a top choice. This heavy-duty cleaner uses sodium hypochlorite (bleach) to break down and remove built-up graying, mold, and mildew stains.

Despite its strong cleaning agents, it is safe to use on most deck woods when used as directed. It also contains rust removers to tackle stubborn metallic stains. For best results, apply with a pump sprayer and allow the solution to soak for 10-15 minutes before power washing.

Key Features:

• Heavy-duty cleaning formula
• Removes gray wood and rust stains
• Made specifically for weathered decks
• Pump sprayer application

3. Corte Clean Deck Cleaner Concentrate

Corte Clean Deck Cleaner is another great option for reviving dingy deck boards without breaking the bank. This deck wash concentrate dilutes with water for the right level of strength needed to tackle mold, mildew, algae, dirt, and other grime.

We like that Corte Clean is safe for all sorts of deck lumber, including pressure and chemically treated woods. An added bonus is that it helps control future fungus growth. The cedar scent is pleasant without being overpowering.

Key Features:

• Designed for wood and composite decks
• Controls future mold and mildew
• Dilutes for customized cleaning strength
• Light cedar scent

4. Olympic Deck Cleaner Concentrate

As a leader in deck care products, it’s no surprise that Olympic makes one of the top power washing solutions for decks. This biodegradable formula connects right to your power washer nozzle and blasts away dirt, grime, mold, and mildew stains.

It’s designed specifically for use on wood decks prior to applying stains or water sealants. The concentrate allows you to control the strength as needed for the cleaning job. It rinses easily with no soapy residue left behind.

Key Features:

• Trusted Olympic brand
• For use before applying stains/sealants
• Biodegradable concentrate
• No soap residue

5. Thompson’s WaterSeal Deck Wash Cleaner Concentrate

Rounding out our top power washing picks for decks is this Deck Wash Cleaner Concentrate from Thompson’s WaterSeal. As you’d expect from this top deck care brand, it has the ideal balance of cleaning strength and wood-safe ingredients.

This pH-balanced formula removes built-up dirt, mold, mildew, algae stains, and discoloration from cumulative sun, rain, and snow exposure. Reviewers praise its cleaning power and say the orange scent is refreshing.

Key Features:

• Thompson’s WaterSeal brand
• pH-balanced for wood safety
• Powerful stain-removing formula
• Orange citrus scent

How to Choose the Right Power Wash Cleaner for Your Deck

When selecting a power washing cleaner for your deck, follow these tips to get the best product for your needs:

Consider Your Deck Wood Type

Certain deck woods have specific cleaning requirements. Here are some guidelines on choosing a wood-safe formula:

• Cedar: Cedar is relatively soft and absorbent. Look for cleaners made for cedar.
• Treated lumber: These deck boards are under warranty and need a cleaner made for pressure-treated wood.
• Redwood: Redwood contains tannins that can easily discolor. Make sure the cleaner won’t stain.
• Hardwoods: Ipe and other tropical woods are dense and oily. Don’t use cleaners with bleach.

Assess the Deck’s Condition

Decks in relatively good shape can use a lighter-duty cleaner. Badly weathered and stained decks need a more powerful mix to break down stubborn build-up and discoloration.

Read the Product Label

Check that the cleaner specifies it’s safe for your particular deck lumber. Look for any special instructions on ratios for dilution or how to rinse.

Consider Added Features

Some deck cleaners also include features like mold inhibitors, rust removers, and brighteners. Choose products with added benefits you want.

Watch Out for Fumes

Bleach-containing cleaners in particular can create strong fumes. Opt for low-odor cleaners when possible. Always work in a well-ventilated area.

Test in an Inconspicuous Spot

Before using any new deck cleaning product, do a test patch in an out-of-the-way area to check for discoloration or damage to the wood.

How to Use a Power Washer on a Deck

Once you’ve selected the right power washing cleaner, follow these tips for safely and effectively cleaning your deck:

Sweep First

Use a broom to remove loose leaves, debris, and dirt. This prevents pushing gunk into the wood grain.

Apply the Cleaning Solution

Apply your diluted cleaning concentrate evenly across the entire deck according to product instructions.

Let It Soak

Allow the cleaner to soak into the wood grain for 10-15 minutes. This gives the formula time to break down stains.

Remove Furniture and Decor

Clear your deck of any outdoor furniture, potted plants, decorations. This protects items from splash back.

Start at a Low Setting

Begin power washing at the lowest pressure setting possible to lift debris. Move up if needed.

Maintain a Consistent Distance

Hold the nozzle 6-10 inches above the deck surface as you wash. Going too close can damage wood.

Work in Sections

Divide your deck into sections to clean one area thoroughly before moving to the adjoining section.

Rinse Properly

Completely rinse away all cleaning solution residue according to product directions after washing each section.

Inspect for Missed Spots

Scan for any remaining dirt or stains. Spot clean as needed before the deck dries.

Allow to Dry Completely

Give your deck 1-2 days of sunny, dry weather to completely dry out before sealing or staining.

Power Washer Safety Tips

While extremely effective for cleaning decks, power washers require proper precautions to avoid injury or property damage:

• Always read and follow all instructions for your power washer.
• Never point the wand at any person or animal.
• Wear protective eyewear and rubber boots.
• Keep the power cord away from water to avoid electric shock.
• Turn off immediately if a leak occurs in the equipment.
• Allow for proper ventilation when working in enclosed areas.
• Never use a damaged power cord or one that overheats.
• Store power washers safely away from children when not in use.

Maintaining a Clean Deck After Power Washing

While power washing provides a deep down clean, you’ll need to follow up with regular maintenance to keep your deck looking its best. Here are some tips for maintaining a clean deck after power washing:

• Weather seal – Protect the wood from future staining by applying a clear weather sealant after cleaning.
• Monthly washdowns – Use a mild soap and scrub brush for monthly washdowns to prevent buildup.
• Quick rinse after use – Hose down the deck after parties or barbecues to wash away spills and debris.
• Remove leaves/branches – Rake or sweep away plant debris before it has a chance to stain.
• Spot clean as needed – Use a cleaning solution on mold spots or bird droppings as soon as they appear.
• Re-wash annually – Schedule a deep power washing clean once a year or whenever the deck looks dirty.

Frequently Asked Questions

What PSI is safe for power washing a deck?

For most decks, a PSI between 1500-2000 is optimal. Higher pressures can start to damage wood fibers. Always start at the lowest setting first and increase as needed.

Can I use bleach to clean my deck?

Certain bleach-containing deck cleaners are safe when used properly at the correct dilutions. Never use household bleach, which is too harsh. Avoid on exotic hardwoods.

What if my deck has a composite surface?

Look for cleaners specifically made for composite decking. Avoid abrasive cleaners. Don’t use bleach products on composites.

How often should you power wash a deck?

Most decks need a deep power washing clean about once a year. For high-traffic areas or regions with humid climates, washing twice a year may be needed.

Is it better to stain or seal a deck after cleaning?

Sealing is best for protecting the wood from future staining. Stains mainly change the color of the deck. Sealants lock out moisture and prevent graying.

Conclusion

Choosing the best power wash cleaner tailored to your deck’s wood type and condition is key to getting a deep down clean without damage. Products like Simple Green Deck Cleaner, DeckMAX Wood Cleaner, and Thompson’s WaterSeal Deck Wash make deck cleaning fast and effective.

Always take safety precautions when power washing, including protective gear and proper machine operation. Finish up with a clear sealer or stain to keep your refreshed deck looking crisp and new.

With the right power washer detergent and some periodic maintenance, you can keep your deck looking like new for years to come. Enjoy the beauty of your deck as a clean, attractive outdoor living space.