Cleaning walls painted with cheap water paint ?

[Econoclean 14]

Hi I am new to this forum and would like to post my first Question.

I see some new Business opportunities in our area.

In our area most of the Shop fronts are very dirty.

It is mainly light fatty stains from people touching the walls.

The walls are mostly painted with cheap water paint. (PVA) As they call it here.

Some of it gets actually washed off by the rain.

Also the underlying plastering is brittle on most walls.

My main concern is not to damage the walls and not washing off the paint.

What mild chemical could I use? There is no mildew just fatty stains.

What water Temperature would you use?

What maximum Pressure do you recommend?

Looking forward to learn from other Peoples experiences.

[krypt 14]

I wouldn't use a pressure washer since the paint is already an issue, I would use a mild chemical (mild chlorine with dawn mix with water) and do a soft wash. caution: Inspect the area before applying anything, You may want to add painting towards your bid also! Since the paint is coming off... be expecting some repair work and free painting if not contracted properly if you use a pressure washer......Specially hot water system...

Also keep in mind the town may not like chemical run off hitting the side walk or street....

Good luck

Steve

[Econoclean 14]

Sorry for that basic Question, what do you mean by a soft wash?

What would you consider a mild chlorine mixture?

We do not have dawn in our area can I use Sunlight liquid instead?

[dave mac 26]

sounds like you shuld be selling a paint job. You can only work with what you have

[diamondbar 14]

I agree. I would not use the pressure washer on that paint that already has issues.

http://www.carpet-cleaning-diamond-bar.com/