what is the least minimal psi powerwasher to use to clean aluminum siding?
Answers:
What are you asking for and why? Are you renting one, buying one? Are you concerned about effecting the aluminum?
I would use a power washer with more than 1500psi. You wont get a good result with less. Now...two things will change the effects of the "harshness" to the siding.....1. the nozzles your using and 2. the distance your holding the spray wand away from the house.
If you're not sure about the tips, simply put one in and spray it in the air to get a feel for which one is best. Good luck
Other answers:
don't cheap out, buy a bigger one... you can always use a larger nozzle to slow down the spray...
don't cheap out, buy a bigger one... you can always use a larger nozzle to slow down the spray...
I have a 2500 psi and it is plenty powerful to do any job around the house.