How to Use a Pressure Washer Surface Cleaner

On this page (8 sections)

1. How do you set up a pressure washer surface cleaner?
2. How do you use a pressure washer surface cleaner without leaving marks?
3. How do you choose the right cleaner for your washer and job?
4. How fast should you move the cleaner?
5. Which surfaces can you clean with a surface cleaner?
6. What should you do if it leaves streaks or stops spinning?
7. How do you care for and store the attachment?
8. Which surface cleaner should you choose?

To use a pressure washer surface cleaner, connect a compatible cleaner, test it on a small area, and move it slowly in overlapping passes. Keep it flat, stay within its pressure and flow limits, and stop if the spray bar stalls or the finish looks uneven.

A surface cleaner covers a wider path than a single spray tip, which can make broad, flat areas easier to clean evenly. It still needs the right washer, a clear work area, and a careful test before you clean the full surface.

How do you set up a pressure washer surface cleaner?

Check the connector and the cleaner’s pressure and flow requirements before attaching it. Turn off the washer and relieve pressure according to its manual before changing attachments.

A cleaner may use a different quick-connect size from your wand or hose. The Westinghouse 16.5-inch model has a 1/4-inch quick-connect fitting, while the VEVOR 18-inch model comes with a 3/8-inch quick connect and a 1/4-inch adapter kit.

The right size for your job also depends on your washer’s flow and pressure. MEKOH specifies at least 2,000 PSI and 2 GPM for its 20-inch cleaner.

VEVOR lists a maximum flow of 4 GPM and a rated pressure of 2,900 PSI. Check the exact limits for the model you choose and make sure your washer meets them.

Clear the work area before starting. Move loose objects, keep people and pets away, and plan where dirty water will drain so it doesn’t flow toward doors, outlets, plants, or other vulnerable areas.

How do you use a pressure washer surface cleaner without leaving marks?

Start with the cleaner flat on the surface, test a small hidden area, then move in steady, overlapping passes. Follow the washer and attachment manuals for startup, trigger use, and shutdown.

Keep the head level as you move it. Start at a controlled pace and overlap each straight pass slightly so the next one covers the edge of the last.

Avoid stopping in one spot while the spray bar is turning. If you see stripes, slow down and check your overlap; if the spray bar stops or turns unevenly, shut off the washer and inspect the equipment.

For a driveway, remove loose dirt and debris first, then clean in sections toward a suitable runoff area. Our guide to how to pressure wash a driveway covers preparation and a full cleaning sequence.

How do you choose the right cleaner for your washer and job?

Choose by washer fit, cleaning width, and how you’ll guide the head across the surface. A wider cleaner can cover more ground per pass, but it’s useful only if your washer can supply the needed pressure and flow and you can maneuver it comfortably.

The Westinghouse 16.5-inch cleaner suits people who want a smaller head and a 1/4-inch quick connect. It’s rated up to 4,400 PSI and is described for flat areas such as decks, patios, and driveways.

Skip it if your washer’s connector won’t fit and you don’t have a suitable adapter.

The MEKOH 20-inch model is a fit for broad, flat areas where its larger cleaning path and four casters can help you guide the head. Its two handles and wheels suit buyers who prefer rolling support over carrying a cleaner by its wand.

Skip it if your washer falls below its stated 2,000 PSI and 2 GPM minimum or you need a compact attachment for tight spaces.

The VEVOR 18-inch cleaner suits buyers who want wheels, dual handles, and adapters for two common connector sizes. It has a 3/8-inch quick connect, a 1/4-inch adapter kit, and a through-hole needle for clearing clogs.

Skip it if your washer cannot meet its pressure and flow needs or you don’t need its included accessories.

Compare connection type before buying, since a connector mismatch can prevent you from attaching the cleaner. You can compare more options in our guide to pressure washer surface cleaners.

How fast should you move the cleaner?

Move slowly enough for the jets to lift the dirt, and slow down when marks or dirty patches remain. The right pace depends on the washer, surface, and soil.

A larger cleaning head covers more area per pass, but it doesn’t mean you should rush. MEKOH advises slowing your pushing speed for better cleaning with its 20-inch model.

Make overlapping passes at a consistent pace. If a pass leaves a stripe, go over that area again with a slower, slightly overlapping pass instead of pressing down on the cleaner.

Which surfaces can you clean with a surface cleaner?

Use a surface cleaner on suitable flat surfaces, and test first because pressure can damage some finishes. Check the washer and attachment manuals, along with care guidance for the material you’re cleaning.

Concrete and other hard, level surfaces are common jobs for this attachment. A cleaner’s compatibility with a material doesn’t guarantee that every surface made from that material can withstand pressure.

Be cautious with painted, sealed, cracked, or aging surfaces. Don’t use the cleaner on loose coating, fragile masonry, or any area where runoff could harm nearby finishes.

For siding, wood, or other surfaces that need a lighter touch, use the approach in our guide to how to use a pressure washer and confirm the surface’s care instructions before cleaning. A wider head still uses concentrated water jets, so test first and stop if the surface starts to flake or etch.

What should you do if it leaves streaks or stops spinning?

Stop and check the basics if the cleaner leaves stripes or the spray bar slows down. Switch off and depressurize the washer as instructed before inspecting any parts.

First, confirm the washer meets the cleaner’s pressure and flow requirements. Then check for clogged nozzles, a loose connection, or a spray bar that can’t rotate freely, following the cleaner’s manual.

Clear a clog only with an approved method and tool. The VEVOR 18-inch cleaner includes a through-hole needle for clearing clogs.

Don’t put your hands under the cleaner or try to clear a nozzle while the washer is running. If the spray bar won’t turn after you’ve checked for a clog and confirmed compatibility, stop and contact the manufacturer for guidance.

How do you care for and store the attachment?

Shut down and release pressure before disconnecting or inspecting the cleaner. Follow the washer and attachment manuals for draining, rinsing, and storage.

Check the head and nozzles for debris before putting the attachment away. Clear clogs only after shutting down and depressurizing the washer, using the method and tool specified in the manual.

Store the cleaner and hoses where they won’t be crushed or left in standing water. A clean, unobstructed spray bar is more likely to turn freely the next time you use it.

Which surface cleaner should you choose?

Choose the Westinghouse for a smaller 16.5-inch head, MEKOH for a wheeled 20-inch cleaner on broad areas, or VEVOR for an 18-inch head with adapters and a clog-clearing needle. First confirm the connector and washer requirements match your equipment.

Match the attachment to the size of the area and how you want to guide it, test a small spot, then work in slow overlapping passes. For other attachments, see the surface cleaners and add-ons guide, and read how to pressure wash a driveway before starting a large concrete job.

Frequently asked questions

What pressure washer do I need for a surface cleaner?

Match the cleaner’s pressure and flow needs to your washer, and check the connector before attaching it. MEKOH says its 20-inch cleaner works with washers rated at least 2,000 PSI and 2 GPM.

A washer below those requirements may clean unevenly or leave the spray bar spinning slowly.

How fast should I move a pressure washer surface cleaner?

Move at a steady pace and slow down if dirt remains or the finish looks uneven. Make overlapping passes so you don’t leave narrow uncleaned lines between them.

The right speed varies with the surface, soil, and washer, so begin with a small test area.

Why is my surface cleaner leaving streaks?

Streaks can come from moving too quickly, using uneven passes, or a spray bar that isn’t spinning properly. Check that the washer supplies enough pressure and flow, then shut it off and inspect the nozzles as the manual directs.

Can a pressure washer surface cleaner damage concrete?

Yes, pressure washing can damage weak, cracked, or poorly finished concrete. Test a small, inconspicuous spot first, keep the cleaner level, and follow the surface cleaner and washer manuals.

Stop if the surface begins to flake, etch, or shed material.