clean motorhome with pressure washer

My thought on any cleaning is to use the least artillery suitable for the job. If gentle hose and pad will do the job, that is what is used. If you need to ratchet up the pressure and chemical strength due to the nature of the job, do it with extreme caution.

I don't plan on pressure washing my RV-or if I do the wand will be at a distance. In general, get the dirt/bugs wet and let it soak for a while. It tends to come off easier that way.

It works just fine so long as you keep the pressure washer wand a suitable distance from the coach. We wash ours by first wetting it down with the pressure washer to loosen up any heavy stuff, then a soft brush on a pole dipped in soapy water, then rinse with the pressure washer. I couldn't imagine cleaning an RV any other way.

Depends on if you have Decals. Fortunately I don't have any!

I learned about pressure washers and decals. Took about 1/3 of the Cambria off the hood. Was going to replace it until I learned the little thing cost $80. Now I just have fond memories of the missing decal.

I still use the pressure washer (1850 psi), at a distance (10-12") as mentioned earlier, plus greater distance from decals. Haven't had any mishaps for the past 9 or so washings.

And Ron's experience is similar to mine on pressure washers not really getting everything off - the closer you get the better, but still ---.

I own a 2200 psi gasoline powered pressure washer but don't use it to wash cars, used mainly on decking, brick & concrete around the house.

I do use those pressure washers at the do-it-yourself car wash places. The spray "fan" is much wider than my home one, safe to use with common sense.

I have washed our motor homes on trips in truck sized versions. Sometimes bug build-up will stink. Other times dust and dirt build-up is excessive. Brushing up against the rig with a clean "T" shirt will get me thinking about it. Once we did an early spring trip with our first rig which started out with road salt spray. Those truck sized do-it-yourself wash bays are great for a quick no-fuss get-the-worst-off cleaning.

The strongest of pressure washers won't do as good of a job for flat surfaces like a soapy warm water brush, followed by a good rinsing. But they are great at cleaning crevices and other irregular surfaces like engines and such.

Its all about the pressure and nozel spay pattern. I use one all the time, works great even on the roof. Definitely speeds up the process of cleaning the bus by at least half for me.

Basically if you are cleaning anything with a finish and removing the finish, your pattern is too tight for the pressure of the pump and your getting too close. For the RV use a 40 degree tip and do not allow it closer then about 12" from the finished surface, same goes for patio furnature.

Concrete ill use the 25 degree for cleaning an about 6" of distance and stubborn stains im down to the 15 degree.

Based on the pressure, I would never use anything but a regular hose and brush on my MH, or other vehicles. I have used it on plastic outdoor furniture and it will remove some of the finish of the plastic. It does work well on cleaning the concrete on my sidewalk and driveway.

Way to much pressure around moldings, window seals, etc. IMO.

depends a lot on which nozzle they used. I wouldn't go near my RV with the "magnum" one. spin brush works well.
bumpy

Depends on the pressure at point of impact. There is a fine line between blasting through boundary layers to remove dirt, and getting under the edge of decals, tapes, and sealants and pulling them away from the surface.

We use pressure washers here to strip off paint.

I've seen people accidentally strip their decals with a pressure washer.