Place a drop cloth over any surfaces that are adjacent to the Agora-tile-covered surface to protect them from scratches and to catch any debris that may chip off from the tiles. Tape the cloths in place with masking tape along the edge to keep them from moving.
Remove outlet covers if the tile is on the wall, or any vent covers from tile placed onto the floor, with a screwdriver. Set the covers aside for replacement. Remove any trim.
Cut any beads of caulk surrounding the tile surface into strips 6 inches in length with a utility knife. Use a putty knife to pry the strips away from the tiles.
Dig out the grout from between the tiles using a rotary tool with a carbide grout blade attachment. Press the trigger of the tool, then run the blade through each of the grout lines several times, with each pass removing a bit of the grout from between the tiles. Remove all of the grout present until you reach the adhesive level beneath and can access the base of the tiles.
Slip a small pry bar into the gap between tiles, and use the bar as a wedge, moving it under the tiles to pry them from the surface.
Remove the old adhesive from the rear of the Agora tile with an orbital sander and medium-grit sanding pad. Wipe the tiles clean with a piece of cloth.
Store the tiles clean,or place the cleaned Agora tiles onto the new surface in the positions desired. Use a tile spacer between adjacent tiles to maintain uniform spacing. Cut any tiles needed to fit partial spaces with a tile wet saw.
Take up the tiles in sections of about 3 square feet. Cover the subsurface with a layer of thinset mortar, using a notched trowel to spread the adhesive. Then rake over the adhesive with the notches along the trowel’s edge to raise ridges in the adhesive. Then press the tiles back into place. Replace the tile spacers as well, to keep the spacing intact.
Cover the new surface with the tiles in sections until completed and then allow the tiles a full night for the mortar holding them in place to begin setting.
Remove the tile spacers. Brush stone sealant over the tiles with a paintbrush to protect the tiles from being discolored when grouting. Wait 24 hours before grouting.
Spread grout over the tiles and into the joints between with a grout float. Wipe off the tiles after grouting with a damp sponge. Wait an hour, then wipe the tiles again with a piece of cloth. Wait another night for the grout to begin to set.
Brush a second layer of sealer over the surface, covering both the tiles and the grout. Wait 48 hours for the sealant to dry before using the surface.