Screed and waterproofing of floors must be done to Australian Standards and fully cured before any tiling work commences.
Fix tiles on a solid bed of adhesive ensuring that there is a 100% adhesive bed to reduce the risk of water penetration. Do not fix using the spot or dot and dab methods. Use a fast setting white adhesive to minimize the moisture penetration in to the marble. (Such as Davco 2 part rapid white adhesive).
Once fixed apply the first coat of Stainproof Sealer by Drytreat as per manufacturers’ instructions.
When grouting it is imperative to fill the entire joint with grout, not merely the top 2 or 3mm. Grout needs to be forced into the joint. Once again, this minimizes the risk of water penetration. We also recommend the use of a grout booster in all wet areas to increase flexibility and lessen water permeability. The grout booster needs to be mixed at a ratio of 50% grout booster to 50% clean water. (Ardex Misty Grey grout works very well with the tones of Carrara marble).
After ensuring that all grout has been cleaned from the top surface of the marble apply the second coat of Stainproof sealer.