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Question DetailsAsked on 10/24/2016

what is lowest temperature you can power wash a driveway

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1 Answer


Any temp you want, especially if you use warm water (not hot - that can burn out the pressure washer unless it is something like a Hotsy designed to use hot water). However, once you get below just above freezing (driveway temp) it will freeze up on you quickly, making it dangerous to work on - and potentially a skating rink afterwards. Ditto if you do it in cold temps and it then drops down to the point that the surface freezes overnight (which with clear skies can be as high as in the low 40's), causing a fine ice layer to glaze over the surface to add adventure to your morning walk to the care and drive.

If the ground is frozen, you also risk filling up drainage ditches or drain pipes or such with the water.

And of course, if about freezing or below, you have to worry about draining the hose and washer good so they do not freeze up on you afterwards (or take them inside).

To avoid those problems, probably not smart to do it (unless an emergency) when overnight temps are getting below about 45 (with clear skies) or about 35 (with cloudy skies), or when ground is frozen.

Answered 3 years ago by LCD

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