Pressure washing in Snohomish, Everett & Seattle

One Way Window Cleaning pressure washes driveways, walkways, patios, steps and entryways for homes in Everett, Snohomish, Seattle and Bellevue, WA.

The green and black film on your driveway is moss and algae growing in a surface that stays damp for months. Shade plus a long wet season grows it, and north facing slopes and concrete under trees get it first.

Washing removes the growth and the slick film it leaves behind, which is the part that matters on steps and walkways. A washed step is noticeably less slippery when wet. Growth does come back over time, because the shade and damp that caused it are still there, but a yearly wash keeps it from ever getting thick and slick again.

This service covers hard surfaces only: driveways, walkways, patios, steps and entryways. Concrete and pavers take the worst of the Pacific Northwest weather. They stay damp for months, moss settles into the joints, and the surface turns dark and slick.

• Driveways
• Sidewalks and walkways
• Patios
• Steps and entryways

The driveway is the most common job, and usually the biggest change. It is the largest flat surface at the front of the house, it catches shade and runoff, and it is the first thing anyone sees from the street. Many people call this same job power washing. Both terms point to this one service.

First the area gets cleared and looked over, so weak joints, cracks and delicate edges are noted before any water hits them. Then the pressure and nozzle are matched to the surface, and the wash works across the area in sections so dirty water is rinsed away instead of pushed around.

Edges and joints get a slower pass, because that is where moss roots in and where a rushed job leaves stripes. At the end the whole area is rinsed down and checked in daylight. You can help by moving cars, planters and light furniture off the surface ahead of time, and by pointing out any spot that has been stained or damaged before, so we can be straight with you about what washing will and will not lift.

More pressure isn’t always better. Too much can etch concrete or chew up softer surfaces. We match the pressure and the nozzle to what we’re cleaning, so it comes out clean without leaving marks behind.

Be careful with any surface that is not on our list. High pressure can strip paint, scar wood and force water behind siding, and softer surfaces need a different, gentler method often called a soft wash. Siding and roofs are not part of this service, and we would rather say that plainly than wash something the wrong way. If you are weighing up the methods, the common questions below explain the terms buyers mix up.

Most driveways and walkways in this climate need pressure washing about once a year, and more often under heavy evergreen cover. Late spring through early fall is the easiest time, when surfaces get a chance to dry.

It’s also worth doing before winter so moss doesn’t get a head start, or in the one to two weeks before you list a house. Getting the driveway done pairs well with getting windows ready before listing photos, so the front of the house and the glass are clean at the same time. Pair it with regular window cleaning in a normal year and the whole outside of the house gets a reset at once.

The price turns on the surface and its size, first of all. A short walkway is a small job, while a long driveway with a patio takes longer and uses more passes. Heavy moss and years of grime cost more than a yearly maintenance wash, because thick growth has to come off in stages, and tight access or a lot of edges and steps adds time.

For area ranges and how driveway work is usually priced, see what pressure washing costs. Your own price comes from the free estimate, before any work starts.

We pressure wash driveways, walkways, patios and steps across Everett, Snohomish, Seattle and Bellevue, and everywhere in between. See the full service area for the details, or call or text if you are not sure whether we reach your street.