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Want to frame a tray ceiling in an unfinished attic. It is a gable roof with 2x6 rafters. Not sure of the pitch of the roof but guessing 6 or 8/12 pitch. There is a 6' high knee wall on both sides that are approx 14' long. The length of the rafters guessing 20' or so. Knee wall approx in the middle span of the rafters.
Since the knee wall is only 6' high want to start the ceiling at 8'. Currently there are some rafter/collar ties at this 8' made from 2x8's. The current span of these ties are approx 9' -10'.
Two questions I have are: 1) 2x8' clg rafters necessary for a 1/2" drywall ceiling ,that will have no one walking on it only light storage? Thought of using 2x6's for the ceiling rafter with vertical hanging 2x4's mid span near the ridge beam to the 2x6 ceiling rafter. 2) The other question was the ceiling rafters would not be resting on the knee wall but rather 2' up from the knee wall nailed to the existing 2x6 roof rafter. Will the roof rafter support the ceiling rafters? Thanks for any help or suggestions.
Edited 10/20/2008 11:15 pm ET by Newpoint
Edited 10/20/2008 11:19 pm ET by Newpoint