Thread: Cleaning sandstone, presoak recommendations, before pressure washing

G'day all

I need recommendation/s for solutions to soak mould etc on sandstone, prior to pressure washing.

This client has the dirtiest pavers I have seen around a pool/garden area, and I don't want to spend to much time and effort with a water pressure machine hacking at the surface. Sandstone can be soft.

I haven't had prior need for pre-wash solutions, so I need recommendations.

There are a myriad of products on the market. I just don't know which ones to trust.

Any ideas?

Thanks.
G