Hardie Panel install question
I am in zone 4c, and am using hz10 hardiePanel.
There is no note on the James hardie best practice guide about small residential jobs regarding expansion and contraction.. they do however have notes and refer you to another document to find out more about installing the hardiePanel in multi-family or commercial in the context of expansion and contraction.
So my question to the GBA community is this, given your experience: I know hardie doesn’t have a requirement for a small scale job (36’x44’ one story house) beyond what’s already recommended in their install guide (either butter joints or gapped for caulk), but should I at least pay some attention to temperature/climate during the day of install? For example is there anything out there that sounds like this: 80° means no gap in joints, while 40° means 1/8” gap….
ive already laid out my furring strips accounting for 1/16” gap give or take per joint… assuming not every panel will fit perfect, and just generally nervous about “moderate contact” on something with cement in it. So it would be a lot of work to go back and fix this now if gaps were frowned upon in warm weather…. hopefully mine isn’t too big and won’t make much difference.
all of the information here was taken from pg 114 of the ‘Best Practices – Installation Guide Siding and Trim Products’
one other thing I noticed on pg. 114 is that they have a detail image showing a ‘batten joint’ – and this joint IS gapped, and there isn’t an alternative shown. Does this mean then that hardie panel with battens (which is what I’m doing), requires a gap at panel joints? It is unclear.
So again, with a small residential job, is it smart to pay attention to climate and install accordingly? How so? And second, is my question answered – regardless of climate – given the detail image on pg. 114 showing a batten joint gapped.
GBA Detail Library
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