best way to lay coping is to chisel down the old beam a little bit and then to form the beam with thin board. I use tap cons to secure the board serrated for radius. Build the beam back up with sand, cement level all around. With the thin board still on set the coping with a straight cement/acrylic slurry. Remove the thin board the next day and point. While pointing fill in any gaps in rear with a pointing mixture and sponge finish. For the rear of the coping attach a layer of foam with masons nails with the removable strip. After you lay the decks pour a rubber joint. Job done.
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