Product MUST be installed in accordance with current TCNA Handbook Stone Methods. SHOWER FLOORS: Ardex 100% Solids Epoxy Adhesive White is recommended for installing this product in shower floor applications. See complete install instructions for further details. Note: Individual sheets of this mosaic are not square. Sheets are irregular and combine into a seamless interlocking pattern. Plan your layout accordingly. Dry laying of this product prior to installation is required. Massage joints when blending individual sheets. White mortar is recommended for natural stone. The installation of intricate mosaic patterns may require the use of a mosaic nipper to hand cut pieces along the edge to fit or conduct adjustments throughout the installation. For straight cuts on a tile wet saw clear plastic face tape can be applied to keep the mosaic pieces aligned while cutting. If using a dark grout, seal the installed mosaics multiple times per the manufacturer's guidelines, After the mosaics have been sealed apply a grout release prior to grouting. Be sure to clean the stone mosaics thoroughly to remove grout residue from the face of the stone mosaics. Dark grout may stain or bleed into light-colored stones, always test the chosen grout on sealed samples beforehand.