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help with ceiling

  1. Remodeling
    I have a 40' X 42' second floor work shop. The roof is supported by steel trusses at a 6/12 pitch. Trusses are 8' on center. 2" X 8" boards are spaced 2' on center between the trusses. This is a clear span room. The ceiling is sprayed with polyurathane foam insulation leaving the edge of the 2 X...