PERSIST + Rainscreen siding issues
I am in the final phase of completing my first PERSIST remodel.
We have installed (2) layers of reclaimed 2" polyiso on the walls (over TYVEK drainwrap) of a 1940's ranch and then strapped with 1x4's using headlock screws. Existing walls were in decent shape in terms of flatness and corners were within an 1/4" of plumb over 10'. So the walls were not perfect but they were pretty good, not bad enough to catch the eye.
The strapping however is extremely wavy. I think my first issue was using 1x4's when I probably would have been better off using 2x4's. But I can't change that now because I have already built out my window openings to accommodate the insulation and 1x. If I switched to 2x the window trim would be coming up 3/4" short because my total wall thickness will have increased. The 1x pulls in tight at each screw, which we installed at 16"o.c. but still bulges between screws where insulation has not been compressed as much. I do not have the budget to double the number of screws used.
So i feel like I am left with (2) options:
1) Check corners vertically with a string and make sure they are straight. Then pull strings at the bottom top and center point of the wall horizontally and rip a shim for each vertical 1x. Then install siding.
2) Check corners vertically with a string and make sure they are straight and pull a string as I do each coarse of siding and shim between the siding and the furring.
Both are fairly labor intensive but I think #1 will lead to a better install.
Any other ideas or experiences with this problem!!!!!!
Thanks for any help.
Posted Aug 24, 2014 8:08 AM ET
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