Photo: Wendell T. Webber
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Press the stone firmly into place on the top-left part of the header. Wiggle it back and forth slightly, and stop pressing when you can feel the stone touch the top of the scratch coat. Mortar should ooze from all sides of the stone as you do this. Repeat with the remaining header stones.
Tip: Don't try to wipe wet mortar off the face of cast stone—you'll end up pushing it deep into the stone's surface pores, where it will cure and create blotches and stains that are impossible to remove. Instead, let the mortar dry and brush it off with a whisk broom.
Tip: Don't try to wipe wet mortar off the face of cast stone—you'll end up pushing it deep into the stone's surface pores, where it will cure and create blotches and stains that are impossible to remove. Instead, let the mortar dry and brush it off with a whisk broom.
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