---

　How to Install Granite Floorsupdate:6/30/2010 2:39:05 AM

Step 1Make sure the sub-floor is clean and dry. Remove peeling paint and residual sealant by sanding or scraping the floor; patch any imperfections with a waterproof compound.

Step 2Know your plan. Start in a 90-degree corner and lay your floor tiles. Use plastic spacers to keep the granite tiles properly aligned. Trim to fit, as necessary, with a wet saw. Take your time; careful planning at this stage will ensure a smooth professional appearing install.

Step 3Mix thinset according to package directions; use the trowel to spread an even layer of thinset on the sub-floor. Place the backerboard and screw it down. This creates a uniform surface and protects your granite from damage.

Step 4Hold the trowel at a 45-degree angle to form consistent ridges and spread thinset. Cover only an area that you can complete in 10 to 15 minutes. Use a slight twisting motion to press the granite tile into the mortar and tap it down with a rubber mallet to force out any air pockets and ensure complete contact. Repeat the process until all tiles are laid; use plastic spacers to guarantee correct placement. Allow the mortar to cure for 24 hours. Stay off the tiles.

Step 5Mix grout in small batches that can be used within 20 minutes. It should be the consistency of toothpaste; let it stand for 5 minutes before using. Work the grout into the tile joints with a grout float; clean off any excess with the edge of the float and a damp sponge.

Step 6Allow the grout to cure for 72 hours before applying a penetrating grout sealant. Use paper towel to wipe any excess sealant off the tile immediately, as it will mar the granite’s surface. Step back and admire your new granite floor.