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Bison Pressure Washing
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House Washing in Cincinnati & Northern Kentucky

Soft washing that strips off the green and gray without blasting your siding.

Free house washing estimate

Takes about thirty seconds.

What do you need?

Or just call 513-300-3630. No pressure, no sales pitch.

The problem

That green film creeping up the north and west walls is algae, and it feeds on moisture. Cincinnati summers are humid enough that it comes back every year whether you like it or not.

The gray-black streaking under the eaves is mildew and airborne dirt. Rain alone will not move it, because it has had years to bond to the surface.

Most homeowners try a hose attachment first, get a patchy result on the bottom four feet, and stop. The problem is reach and chemistry, not effort.

How the job runs

  1. Walk the house first

    I look at what the siding actually is, where the staining is worst, and which plantings need protecting. Vinyl, brick, stucco and painted wood all get handled differently.

  2. Soft wash, not pressure

    Siding gets a low-pressure application that does the work with cleaning solution instead of force. High pressure on vinyl drives water behind the panels and can leave permanent etching. That is the single most common way homeowners get burned by a cheap wash.

  3. Dwell, then rinse

    The solution needs a few minutes to kill the algae at the root. Rinsing too early is why some washes look great for two months and green up again.

  4. Walk it with you

    Before I pack up, we look at it together. If a spot bothers you, I would rather hear it while the equipment is still out.

What's included

  • Siding, soffits and fascia
  • Shutters, downspouts and gutter exteriors rinsed
  • Plants and landscaping pre-watered and protected
  • Window exteriors rinsed free of overspray
  • Entry doors, porch ceilings and trim

House Washing questions

Is pressure washing safe for vinyl siding?

High pressure is not. It can force water behind panels, crack brittle vinyl and leave permanent streaks in the surface. That is why siding gets soft washed instead — low pressure plus the right cleaning solution. The chemistry does the work, not the force.

How long does it take?

Most single-family homes run two to four hours depending on size, height and how heavy the staining is. You do not need to be home, though plenty of people are.

Will the green come back?

Eventually, yes — algae is airborne and Cincinnati is humid. A proper soft wash kills it at the root rather than just rinsing it off the surface, so you are typically looking at a year or more before it is noticeable again. North-facing walls and heavily shaded sides always go first.

Do you need to use my water?

Yes, I connect to an outside spigot. If your water pressure is low or a spigot is not working, tell me ahead of time and I will plan around it.

Want a number on it?

Free estimates, straight answers, and I'll tell you if you don't need the work.