How to fix drywall bowing from exterior, blown in insulation?

Question

Last July, we had a company come out and blow insulation into the cavities of the exterior walls...

We've seen the issue for a while, but have been ignoring it, but now I am working on one of the rooms and would like to remedy it.

Basically, house was built in 1974. Drywall was secured (properly) around exterior edges, and only glued throughout the center studs. Naturally, that glue bond has deteriorated, so when the insulation was blown in, the drywall bowed. In some cases not so much, but on longer spans, I would estimate up to 2-3 inches.

Is there anyway to resolve this without tearing out the drywall completely?

I have tried a 2x4 down the length of a few studs, secured in with 4" decking screws, but the boad ultimately just bends and follows the contour of the wall.

Answer 1

Did they blow in dry fiber glass, cellulose, or wet foam. Years ago my brother- in- law got into the foam insulation business and foamed some houses. The wet foam loosened the glue and the drywall bowed. His insurance paid to have the drywall replaced on every wall effected. After that event he would never take another insulation job where that same builder built the house since they used glue and only a few screws to hold the dry wall in place. My guess would be that the insulation contractor is " on the hook" for the bowed walls. I would call him and show him the problem. Let him decide what to do.