I'm about to lay some sandstone slabs of various sizes on a DPM, three inches of compacted sharp sand, and an inch of mortar.
What concerns me though is the grouting/pointing as the mortar could stain the sandstone and i would like to know if there is a way of avoiding this happening.
Is it also neccessary or advisable to coat it upon completion with some kind of sealer or not?
Many thanks, Calum
What concerns me though is the grouting/pointing as the mortar could stain the sandstone and i would like to know if there is a way of avoiding this happening.
Is it also neccessary or advisable to coat it upon completion with some kind of sealer or not?
Many thanks, Calum