Screw joints rotate. A lot of time got wasted rotating, skewing, tilting and re-truing them before sheathing. I temporarily nailed sections of steel stud to the floor to use as guides. The walls were sheathed in 1/2" CDX plywood fastened every 6" along the edges of the sheet and every 8" along interior studs. The plywood extends 3/4" below the bottom plat to protect the edges of the flooring.
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| Layout Using Steel Channel as a 12 foot Straight Edge |
The Scafco sales rep suggested fine galvanized drywall screws to attach sheathing to the studs.
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| West Wall With Sheathing |
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The unfinished South wall can be seen leaning against the fence at the left of the photo.
The East and West walls were built with the end-rafters attached to the front and back studs with hurricane ties and screwed to the sheathing.
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| Detail of Rafter Fastening |
My drill wouldn't drive a specially built self-tapping screw through the structural steel members much less a drywall screw. Each screw had to be pre-drilled. I went through a lot of drill bits. Fortunately, Harbor Freight had a sale on 1/8" nitride-coated drill bits.
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| Detail - Sheathing Screwed to Stud |
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| Framing the East Wall Window |
The window was framed with shorter studs and two pieces of channel. The wide section of the channel was cut out with tin snips to form tabs that were screwed to the studs at each end.
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