limestone or concrete. Words on wisdom on either. Thanks so much.
either concrete or limestone be very careful of the type of mastic used to adhere them to the walls...both concrete and limestone are porous. Use a professional who has experience with this type of application.
it is concrete, have your concrete person make them. Remember to subtract from your tile measurements fora thin grout line between everything.
fireplace chimney - use tile symmetrically to create modern chimney effect?