2: Secure metal Lath Over the Felt
3: Apply the Scratch Coat: Cover the Lath with Mortar
4: Comb the Scratch Coat
5: Prepare the Field of Stones: Create a Dry Run of Your Design
6: Score the Corner Pieces
7: Remove Excess Material From the Corner Pieces
8: Install the Corner Pieces: Wet the Stone and Wall
9: Coat the First Corner Pieces for the Header
10: Install the Header Stones
Working from the bottom up, staple horizontal lengths of builder's felt to the front and sides of the fireplace where the stones will go, overlapping the lengths by 2 inches or more. Each length of felt should be a continuous single piece so that water in the mortar can't seep behind the felt and cause damage.
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