Slate roofs

[apallclean]

Looking for some help with slate roof cleaning. Questions is not sure if pressure can or should be used on something like that. We have a lift we will be using but any suggestions on chemical use and the approach we should use to tackle this job would be really helpful. Any tips at all are welcome. Thanks guys.

[K.J.]

Pressure can be used but, I don't recommend it.
Clean them as you would normally like a shingle roof but use a mix that is slightly stronger.
Good Luck!

[roof cleaning]

For SURE do not walk on thin slate roofing.
As far as roof cleaning chemical, we suggest only Sodium Hypochlorite and water.
Skip any detergent/TSP, etc.