Sealing Slate before Installing It

Hi, I have been told that it is better to seal the slate tiles i bought before installing them, would it be ok to do this, thx

Hello Sean

This would be quite time consuming to do but I suppose you could do it, we have never heard of anybody sealing slate tiles this way before, it is always better to install the slate tiles, clean them & then seal them, it takes half the time to do & they will all be in situe then & sealing will be easy, my advice would be to seal the slate on installation.