Fastening Siding to Furring Strips
I am building an addition in Ottawa, Canada and plan to have 3” of exterior mineral wool insulation on my walls with 3/4” strapping at 16”, aligned with the studs behind. With thanks to previous Q&A’s, I think I have that part figured out…
However, I am realizing that the installation instructions for all siding manufacturers I have found, other than some vinyl siding, require 1” to 1.5” of embedment of the fastening nails into the supporting structure but I have 3/4” max unless I fasten right through the insulation to the studs.
Rain screens with 3/4” furring strips seems very common (and generally recommended) on GBA, so I am wondering how others have addressed this? Ring shank nails? Long fasteners back to the studs? Regular siding nails/what embedment requirement?
We are far from any coast and have much lower design wind speeds than many coastal applications that are presumably covered by the catch-all installation instructions.
Thanks in advance!
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