I am finishing out the ceiling of a study with stained white oak. The ceiling has four beams laid out like a tic-tac-toe pattern. I am going to cover the beams with 3/4" plywood. I will put 1/4 ply on the ceiling inside each of 9 squares of the tic-tac-toe pattern (I will attach the 1/4' sheeting with brad nails and construction adhesive). I am then going to put crown inside each of the nine squares. Since I have 3/4" ply on the beams, I will have a good nailing surface for the bottom edge of the crown. If I shoot a finish nail through the crown into the ceiling it will only have sheetrock and 1/4" ply to hold it. Will that be sufficient to hold the crown or will I need to install a backer strip or go into the attic and install blocking? Note that the maximum length of any one piece of crown is 48", so the mitered ends will somewhat lock things in place.
- posted
20 years ago