How much will rain screen and siding hide walls being out of plane?
DADU1
| Posted in Construction Techniques on
Hi All,
I’m building my own home and am preparing to build and tilt up the ground floor walls above a daylighted basement. As I’ve cut and placed plates I’ve found that the rims below are, at places, 1/8″ – 1/4″ proud of where the walls above will land. Moving the plates out will create larger overhangs in the plates at other locations.
Siding will be lapped hardi boards over 1/4″ rain screen. I’m wondering if anyone can speak to standard tolerance for stacking walls being out of plane. Do the strips for rainscreen smooth out this much discrepancy? I’m sure I can shim out some of the strips but will also require some idea of what tolerance to build to.
Much Obliged,
Eric
Replies
Hi there, anything 1/8" out of plane/alignment is within most framing tolerances. A 1/4" can be of no consequence in some places, or create noticeable issues in other places. Assuming you are placing the bottom plate of the wall on a snapped line (straight line), the bulges you are seeing in the rim joist below. If that's the case, can you power plane the offending areas after setting any nails? Otherwise, I would plan on thinning the rain screen furring at the bulges. I wouldn't recommend shimming as you want whatever you are nailing to/through tight to the framing. I hope that is helpful. Good luck.