How to Avoid Wavy Look on Hardie Siding
walking around my neighborhood at night, I saw some wavy hardie siding. It was likely the lighting that emphasized it, but i felt alarmed by how bad it looked. I don’t have a photo, but have questions.
I have framed some walls at 16″ o.c. and others at 24″. I’m putting up housewrap now, and will add strips of wood for a rainscreen (about 1/4 – 1/2 inch, maybe plywood strips?).
I plan to staple the furring strips up on top of the studs (locating the studs using a studfinder which hopefully can ‘read’ through my 1/2″ cdx plywood sheathing and the housewrap. (Before putting up the top layer of housewrap, I can see where the stud layout is above and start the furring strip install by plumbing down.) I know it’s critical to hit the studs when installing the hardie plank siding.
I haven’t decided on a width for the hardie. Was planning to install with hd galvanized 8d nails (2 1/2 inch) with a pneumatic nailer.
I did find one article that said using galvanized screws improved results, though not sure why. I also did see that some of the wavyness was caused by improperly crowned studs. I think I did a pretty good job making sure my studs were all “crowned out”, but I guess this may be the moment of truth!
1. Are the wider planks are more prone to waviness? I’d be ok with a 6-8 inch reveal.
2. I’ve appreciated the look of the 16″ wide stuff that is applied flat with z flashing above each strip (can someone tell me what that is called)?
Anyway my concern is that installing the siding over 24″ spacing will create that wavy look.
3. Should I add extra rainscreen strips to help support the hardie?
4. Consider the thicker artisan hardie (2-3x much more expensive as I recall)?
I’m not getting the prepainted hardie, not using the woodgrain textured, in case that matters.
I would hate for it be obvious where the studs are and aren’t!
Thanks for any advice on this. I’m attaching a picture of the house I built this summer…
p.s. I used metal to cover the exterior crawlspace insulation (rockwool comfortboard). Pretty happy with how that turned out although it was tricky to figure out the entire assembly.
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