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  1. General Discussion
    I am doing a project with 8-1/4" x 12' cement fiber board to install on older home with existing 3/4" cedar tough & groove structural sheathing (re-screwed at studs) with new tar paper coverage. 3 questions: 1.) what is the butt joint gap (clearance) on a 8'x 30' and 8'x40' wall dimensions...
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