This question was asked by
I have a paved patio which has stone or concrete slabs and in need of protection from stains and general annual growth. Can you advise what is the best product in your range to use?
If you are uncertain whether the flags are stone or concrete I would recommend using our Stone and Slate Protector (link below), this will be ok to use on either surface.
Stone and Slate Protector (SSP)
Drew Palin