How to Install Granite Molding

Measure the area where you want to install the granite molding. Ideally, you should order it to fit so you don't have to cut it yourself. If you have a diamond tile saw, you may choose to cut the molding yourself.

Prepare the wall surface for the molding by cleaning it with tri-sodium phosphate, rinsing then drying it.

Pour dry thin set mortar into a 5-gallon bucket.

Add a cup of water at a time to the mortar, as you mix it with a putty knife, until it's the consistency of thick pancake batter. Add more thin set mortar if it's too thin or more water if it's too clumpy.

Measure the location before you apply the thin set. For example, if you are installing the molding in the middle of the wall for a chair rail effect, measure how far up you want the molding and mark it on the wall. Use a chalk line to mark where the molding will go. You can also install the molding and ensure it is straight with a level.

Scoop the thin set out with a notched trowel and spread it across the surface where you will install the molding. Apply an even layer that is about 1/4-inch in thickness.

Press the molding firmly into position on the thin set and check that it sets even with the counter top or chalk line with a carpenter's level. Tap the molding with a rubber mallet to help align it if it is uneven.

Caulk around the molding edges with silicone caulk that matches the granite. If you can't find matching silicone, use a clear variety.