How to handle the vertical spacing between HardiePanel vertical siding?
Caulking is acceptable with vertical joints between Hardie panels. Use good quality paintable siliconized caulk. You should apply water resistant barrier before any siding and proper flashing with siding. Z flash at horizontal joints etc.
Panels can be installed with vertical joints in what instructions call "moderate contact", touching each other without actually shoving them together I'd say. Then joint can be covered with a batten, or you can use an metal or plastic H strip between panels when installing. Caulk can be used with battens and H strip, battens can go over wider caulked joint.
Make sure you get tech and installation sheets with panels, there are cutting and nailing specs specific to Hardie or other cement panels and trim. And that stuff is heavy.
Measure twice, cut once.
Look at the nail, not the hammer. Watch the fence, not the blade.
If you hook your thumb over your belt you won't hit it with the hammer or leave it layin on the saw table.
Last edited by notmrjohn; 10-28-2012 at 03:20 PM.