Underlayer Options

• Since granite is so heavy, a strong under layer is needed. Some options include CDX plywood, which is also used for hardwood floors. Another option is regular plywood or compressed particle board. You should consider the environment where the tile is going to be installed. If it is for flooring and it will receive heavy wear, strong 1/2 inch or better CDX is the best bet. This will provide support for the tile and provide a strong enough backbone. For countertops a solid layer of plywood is often enough. The granite adds a lot of weight to the counter structure, so heavy plywood helps support the structure. You can also add a tile backer shield on top of the plywood.
  
  

Grouting

• Granite tiles can be set in place using a very strong masonry grout. This is spread over the plywood once it is set into place. Sheets of thinset or Denset are also worked into this layer before the tiles are applied. Once the area is grouted, you can set the tiles into place. It is recommended to work from the inside layer out, laying the first interior row, then the adjoining rows beside them until you reach the edge. This way you can edge you granite tiles for a precise fit that aligns perfectly with the edge of the counter.
  
  

Backsplashes and Cutting

• You will need to cut the granite tile to install it, so you should have a masonry saw with a granite bit. Use plenty of lubricant to cut your granite tiles, and always mark them clearly with a marker. For the edge pieces you will need to create a bull nose edge. This can be done by a professional tile cutter, or you may opt to buy pre-edged tiles from a masonry store. Remember, the back splash tiles will need to have a bull nose edge as well. The tiles in the row that intersects the back splash will not have a bull nose edge.