Step 1: Remove the Old Flooring and Create a Template

Begin by removing old flooring surface. If working with vinyl tiles, avoid breaking the tiles into small pieces as you pry them loose. Larger pieces provide greater leverage.

Once old flooring has been removed, create an exact template for the hearth. Use cardboard, a pencil or marker and utility knife to cut the template. (If you've never created one, you might have a local granite supplier cut one.) After the cardboard template has been created, check the fit against the hearth.

Step 2: Cut and Dry-Fit the Granite

Select granite color and order from supplier. Have professional cut to match the template.

Dry-fit the cut granite. Ask the supplier to make any necessary adjustments.

Step 3: Apply Mortar

Mix thin-set mortar with water to create the consistency of frosting. Apply mortar to area where granite will be positioned. Cover area thoroughly.

Step 4: Position the Granite and Apply Caulk

Position granite over the mortar. Clean excess mortar with a margin trowel (Image 1), taking care not to scoop mortar from underneath the granite. Stay even with the edge while working, then use damp sponge to clean away residue.

Finally, apply silicon caulk to seal between granite and wall (Image 2).

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    Image 1

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    Image 2