One uses force. The other uses chemistry at garden hose pressure. Which surfaces take which is the most consequential thing to understand before you hire anybody.
Pressure washing is mechanical. Water at high pressure, sometimes 3,000 PSI or more, physically knocks material off a surface. It is the right tool for a stained slab or a brick wall, where the surface is harder than the thing you are removing.
Soft washing is chemical. Pressure drops to roughly what comes out of a garden hose, and a cleaning solution does the work: it kills algae, mildew, moss, and bacteria at the root, sits long enough to break them down, and then rinses away. The pressure is only there to move the solution.
The distinction matters because most of what makes a house look dirty in the Triangle and Johnston County is alive. Force relocates a living colony. Chemistry ends it.
| Surface | Method | Why |
|---|---|---|
| Vinyl, fiber cement, stucco siding | Soft wash | Pressure cracks panels and drives water behind them into the wall |
| Asphalt shingle roof | Soft wash only | Pressure strips the granules and voids the shingle warranty |
| Painted or stained wood | Soft wash | Force lifts the coating and raises the grain of the wood underneath |
| Screens, windows, and gutters | Soft wash | Thin materials, seals, and glazing do not take force |
| Concrete driveways and walkways | Pressure | Hard, unfinished, and usually stained by things chemistry alone will not lift |
| Brick and block | Pressure, carefully | Fine on sound masonry, damaging on soft or old mortar joints |
| Pavers | Pressure, then re-sand | Force is fine, but it removes joint sand that has to be replaced |
| Composite decking | Soft wash | Manufacturers void warranties over pressure, and it fuzzes the surface |
Most real jobs use both. A house wash is a soft wash on the siding and a pressure clean on the walkway, on the same visit, with the operator switching methods as they move. Anyone who only owns one approach will use it on everything.
Cracked and chipped panels, and water forced up behind the courses where it sits in the wall cavity. That is the damage you find months later as a stain on drywall.
Granule loss you can see as black grit in the gutter afterwards, water driven under the courses, and a voided warranty. This is the expensive mistake.
Raised grain, splintering, and visible wand marks that no amount of sanding fully removes.
Blown joints on brick, which is a repointing job, not a cleaning job.
Water forced past glazing and through failing seals into the frame and the wall.
Blast algae off a wall and you have removed the visible colony. The roots are still in the pores, and it comes back in a few months looking exactly the same. A soft wash treats the growth itself, which is why a properly soft washed house in Clayton holds for a year or more while a pressure-blasted one greens up by the end of summer.
That is the part that decides value. The two jobs look identical the day they are finished. They stop looking identical in about ten weeks.
We use both methods, on the surfaces that call for them, on the same visit. If you are not sure which your property needs, call (919) 698-3669 and describe it. That conversation is free and it takes two minutes.
“Came out on a weekend when I needed it and the results were excellent. Real person answered the phone every time.”
“Same-day service and the whole property looks better. Will use them every year.”
“They brought the color back on our vinyl siding after another company left it chalky. Night and day.”
Nobody can price your driveway off a web page. Here is what a real quote is built from, why two bids on the same house can be a hundred dollars apart, and where the money actually goes.
Read the guide →CommercialWhat property managers and owners across Wake County should actually be budgeting for, how often each surface needs attention, and why the after-hours question decides the whole thing.
Read the guide →RoofsThe dark stripes running down North Carolina shingles are a living organism, not dirt. Here is what it is doing to the roof, and why the fix is a chemical one rather than a strong one.
Read the guide →We fly the roofline and show you the footage on the spot. You see your own gutters, joints, and downspouts on the screen instead of taking our word for it. It costs nothing and you are not committing to the cleaning.
Free for homes and businesses across the Triangle and Johnston County. No obligation to book any work afterwards.
Call (919) 698-3669 for a free quote. No obligation.
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