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stevebelcher
crack in drywall

I have a vertical crack in the drywall that keeps on coming back after the joint has been repaired with tape and drywall mud. It appears to be from movement expansion and contraction from the changes in temperatures and seasons. My question is how do repair the wall to keep this from not happening again?
Thanks.

dj1
Re: crack in drywall

If this is a recurring problem, treat it differently.

I'd cut the affected drywall to the nearest studs on both sides, check and repair the studs (to make sure it's not sticke in or out) and install a new drywall piece. Then finish and wait.

Clarence
Re: crack in drywall

It may not be repairable by taping and mudding.
Check out The USG Gypsum Construction Handbook glossary under
Hygrometric Expansion if you are in an area OF high Relative Humidity you may need an expansion joint installed.
Like in plaster we need expansion joints due to the same reasons.If your wall is 30 linear feet it could have an exspansion of 1/8 inch , the longer the wall the wider the crack.

Sombreuil_mongrel
Re: crack in drywall

Take off all the drywall, apply 1/2" plywood on studs in a staggered-joint pattern, with glue and nails. Add new drywall to the top of the plywood.
You now have a shear wall.
Casey

ordjen
Re: crack in drywall

The gret majority of such cracks are caused by the stresses of settling. Assuing that the house has finally 'settled down". I would try DJ1's solution first - relieve the stress and spred it to the adjoining studs.

Clarence could be correct. Expansion joints are common and needed where heat and humidity can vary greatly, such as in seasonal summer homes which are not heated in winter. The expansion is just to great for the drywall alone to handle.

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