Strapping screws: to angle or not to angle?
For 4″ of XPS, with a 3/8″ airspace and 3/4″ plywood strapping, is it sufficient to screw in straight, or do I need to screw in at an angle? I’ve read where both are “recommended”. From my small-scale mockups, screwing straight through seems adequate, but I’ve never done this before so I don’t want to screw it up (sorry :P). The screw pattern I’m using comes from the manufacture’s data sheet, and it doesn’t specify a screw angle.
Exterior sheathing will be board and batten, white pine, painted. I’m sort of regretting the wood siding idea, but I wanted board and batten and wasn’t happy with cement siding options.
(I’m putting a screw in every 12″, furring strips are spaced 24″ O/C).
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