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Cracks In Plaster And Drywall

 
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Old 07-22-2012, 05:36 PM   #1
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Cracks In Plaster And Drywall


Im wondering if anyone could give me some insight into why these cracks appeared in the plaster, and a couple appear to be through the drywall, I assume these are all on a joint.

This house is mid 80's, all 2x8 outer wall construction, and seems to be in pretty good shape.

All the windows near where the cracks are open and close fine with no sticking so I ruled out settling?







This one is between an upper and lower window.




This is a clear story wall.

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Old 07-22-2012, 05:42 PM   #2
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Re: Cracks In Plaster And Drywall


Water?

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Old 07-22-2012, 05:49 PM   #3
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Re: Cracks In Plaster And Drywall


WOuldnt there be other signs of water damage? Like the ceiling above the bump out wall, and stains in the other areas?
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Old 07-22-2012, 06:16 PM   #4
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Re: Cracks In Plaster And Drywall


Plants on shelf?

Slow leak in window?
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Old 07-23-2012, 04:40 AM   #5
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Re: Cracks In Plaster And Drywall


Little shelf wall looks like too much mud and shrinking, sorta?

Clear wall crack, unavoidable.

Between windows, Looks like movement of some sort but would not rule out water,open it up and see.

Good luck
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Old 07-23-2012, 07:38 AM   #6
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Re: Cracks In Plaster And Drywall


Looks like movement to me. Mesh is really weak in shear, and it looks like the little shelf and below the window are having shear problems. The clear story is expected and looks normal.
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Old 07-28-2012, 11:42 PM   #7
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Re: Cracks In Plaster And Drywall


I've seen similar damage to drywall attached to double studs and double top plates. In my experience too many screws and or liquid nails on adjoining double studs or double plates won't allow the lumber to move when it soaks up moisture in the summer months. Since two pieces of wood will move at different rates, if the drywall is attached to both adjoining pieces the result is cracked drywall. Your pics look like recent foundation movement.
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Old 07-29-2012, 07:12 PM   #8
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Re: Cracks In Plaster And Drywall


We work on custom homes with similar features that are pictured. Builders and designers do not calculate how load is transferred down to the foundation in these big open contemporary designs. What you are dealing with is stress load and compression. When we encounter this, we remove busted drywall, replace with new material leaving a 1/8" gap all around. Make needed repairs and tell owner that this may return. Call me if you need to. Structure will eventually adjust to load. May take up to 5 years to settle on some of the homes.
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Old 08-05-2012, 06:11 PM   #9
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Re: Cracks In Plaster And Drywall


Quote:
Originally Posted by hdavis View Post
Looks like movement to me. Mesh is really weak in shear, and it looks like the little shelf and below the window are having shear problems. The clear story is expected and looks normal.
yeah , sounds like settling
check the headers on some of the doorways and see if they are out of square , or if there are signs the floor as settled .
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Old 08-11-2012, 08:25 PM   #10
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Re: Cracks In Plaster And Drywall


Looks like seetling to me also, could be the mix that was used when they did the home, could of been a bad batch ...

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