Quote:
Originally Posted by villagetinker
Be careful of the very high pressure units, these may actually damage your siding. We used a commercial company to power wash our house (stucco), but had some damage to electronic devices that were rated for rain but NOT 2000 psi (or higher) pressure washing. I now do my own.
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Very true ! That and a number of other negatives, but many would argue that they always hire it done and had no damage. I just find it so easy and simple to use the self mixed ones where there is nothing to do but connect the bottle to the hose and turn it on, since it does such a nice job, seemed foolish to hire it done unless illness or other prevents a person from walking around the house with a hose.