I have a detached garage addition, I'd like to add a non-load bearing
interior wall, 12' long across a 20' width, with the top wall plate
perpendicular to the trusses. The addition is insulated to recommended
R-value for a northern Indiana climate and the slab has a thermal break on
the exterior footing walls.
I'm concerned if slab movement will cause cracking in the drywall ceiling if
I make the new wall a tight fit between the slab and the drywall ceiling.
Here is a trick I learned from a fellow who built in a cold climate. Use
two bottom plates and keep them spread apart by 1/2" or so and don't
nail the drywall to the one that sits on the floor. If the floor moves
up or down the drywall will not be affected.I have not done this myself
but he said it worked. Good luck. TonyG
Even if frost heave isn't an issue, expansive soil may be.
Search for "expansive soil" and "floating wall". Whether and how to
build a floating wall will likely depend on the specifics of your
situation. (soil type, garage construction details, intended use, etc.)
I'd call your area building agency and see if historical reason exists for
to worry and to learn what the common approaches to resolution of the
are should there be one. If this is not going to be a bootleg operation,
are going to satisfy their requirements anyway.
Should you have irrepressible fear of damage from heave, expansion or
the first instance of a temblor in your area, there are several novel ways
a person could avoid your worry and still build a wall that was stable by
use of an innovative floating attachment to the ceiling but getting them by
code would likely either be difficult or require an expensive engineering
Thanks to everyone for all the help. The wall was to attach hanging shelving
for my record collection storage. I wanted to match the existing shelving I
had previously installed on an exterior wall. Well I scored some 8ft tall
free standing shelving that works fine so I'm going in a different
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