...I'm using RSIC-1 Clips to support metal hat channel for my theater room walls and ceiling. The RSIC layout instructions show placing a pair extra rows of hat channel, spaced 3" apart, at each location of a drywall butt joint. I understand the reasoning for this whenever a butt joint occurs at a location where there is no other support. However, are these extra channels really necessary at locations where the drywall is cut to a length such that the butt joint falls on an existing row of hat channel? Is there anything wrong with laying out the pattern such that all butt joint seams fall on one of the primary 24" spaced hat channel supports?
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2/11/08 at 4:16pm