I have installed a lot of slate tiles flooring systems . I always seal the individual tiles with 2 coats of 511 impregnating sealer in advance of the install. This acts as an excellent grout release and I have found that this sealer has minimal color darkening.
I have installed a lot of slate tiles flooring systems . I always seal the individual tiles with 2 coats of 511 impregnating sealer in advance of the install. This acts as an excellent grout release and I have found that this sealer has minimal color darkening.