Hi folks,
I've got a lot of mold on my limestone driveway and reconstituted limestone retaining walls, anyone know of a solution that kills the mold?
A high pressure sprayer works on the driveway to a point but doesn't do anything on the retaining walls.
The driveway has tiny black spots within the limestone and the retaining wall appears slightly dark and greenish, neither of these can be pressure washed off.
anyone got any solutions?
thanks
Dave
I've got a lot of mold on my limestone driveway and reconstituted limestone retaining walls, anyone know of a solution that kills the mold?
A high pressure sprayer works on the driveway to a point but doesn't do anything on the retaining walls.
The driveway has tiny black spots within the limestone and the retaining wall appears slightly dark and greenish, neither of these can be pressure washed off.
anyone got any solutions?
thanks
Dave