Pressure Washing FAQ — Salem & Mid-Willamette Valley

Yes — and it is the reason we use it. Soft wash removes mildew and algae with detergent and low pressure, so the paint film is never abraded. Blasting painted siding is what causes chalking, streaks, and premature repainting.

Not at the pressures and technique used for residential concrete. Damage comes from holding a narrow nozzle too close in one spot, which etches lines. A rotary surface cleaner spreads the force evenly, which is why we use one for the bulk of a driveway.

Soft washing at low pressure does not raise the grain. Furring comes from high pressure held close to the wood. If your deck is already fuzzy from someone else's attempt, cleaning will not reverse that — it needs sanding.

Usually yes, at soft-wash pressure with a detergent matched to the growth rather than a stripper. What we will not do is blast it — that is what removes sealer. If the finish is already failing, cleaning may take some of it with it, and we would rather tell you that beforehand than surprise you.

No. Soft wash is low pressure plus a cleaning solution that has time to work. The pressure is not reduced because the operator is being cautious — the detergent is what removes the growth, and pressure was never doing that job.

Because the cause is still there — shade, moisture, and organic debris. Cleaning removes the growth, but the surface stays a habitat. Keeping needles and leaves cleared and cleaning before the wet season is what lengthens the interval.

Because that is the side that never dries. Growth needs moisture sitting on a surface, so the shaded elevation stays damp while the sunlit ones cycle dry. It is a drainage and exposure pattern, not a housekeeping one.

It resets the surface, but the conditions that grew it are unchanged, so it will return — just over a longer interval. Keeping debris clear and addressing the shade and drainage around that wall is what actually extends the interval.

Late spring and early autumn are the two natural windows: spring clears winter growth before it sets, and autumn resets the exterior before the wet season. Growth on a shaded wall can justify attention sooner than either.

On a treed lot in the Willamette Valley, often twice a year — once after the autumn leaf drop and again once the firs have finished shedding. A house with no overhanging trees can go considerably longer. If we clean yours we will tell you what interval your specific roof actually needs.

We use biodegradable detergents and wet down foundation beds and landscaping before and after, so runoff is diluted. We will tell you which areas to keep pets off until the surface is dry.

With the practice done properly — beds saturated before, rinsed after, product diluted — yes. Detergent left to sit on dry foliage undiluted is what causes damage, which is why the wetting-down step matters.

Oregon municipalities restrict what can enter a storm drain, so we manage where wash water goes — keeping it on your property as far as practical and away from the drain rather than letting it run to the street. The eco-compliant approach and the compliant approach are the same approach.

By surface area, the type of surface, how much growth is on it, and access. We give a flat price for the scope we agree on rather than a per-hour rate, because you should not be paying for our pace.

Most single-family homes are done in a single visit, with the time driven by size, accessibility, and how much growth is present. We give you a realistic window when we quote rather than an optimistic one.

No. For exterior work we need access to water and a clear path, and we will tell you before we arrive if anything needs moving. Most customers are out and come back to a finished job.

Cleaning and minor re-seating we can look at. Anything structural — a run pulling off the fascia, rot behind it, or a re-pitch — needs a gutter or roofing contractor, and we will say so instead of improvising.