[Ben wood]

Hi just a quick one chaps. Will using my petrol pressure washer in the rain damage it as booked two patio to do tomorrow but forecast heavy rain

[Jettaway]

Sure will! Rain won't affect your p/w.  Just depends if you want to get wet or not. Double check your electrics don't have split casing... Exposed wires could be an issue ;-)

[BDCS]

Just get on with it and spray the m/c with wd40 or the like afterwards