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Finding Structual Wood behind Drywall

Posted by jerry_nj (My Page) on
Sat, Apr 16, 11 at 22:52

I thought I had posted on a similar subject about a week ago, but I didn't receive any responses, and I can't find it. So, I hope this is not a duplicate.

I am planning to install a simple crown molding in a bedroom with 8' ceilings. The house is about 25 years old and has current wood framing, I believe.

I believe the (second floor in a two story home in this case) wall has a double 2" by 4" wood plate on top of the wall studs. Taking the real dimensions into account that would mean the top of the wall frame has a 3" wide wood backing where the ceiling joist rest. Given a half inch drywall ceiling that would mean the finished wall would have about 2 1/2" of wood below the finished ceiling. Thus, one could drive a nail into the wall anywhere from the ceiling to about 2" below the ceiling and be sure of hitting structural wood with the nail. Is this correct?

I may not have clicked on the post I think I made and that's why I didn't get any email notice of answers/inputs.

Thanks,


Follow-Up Postings:

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RE: Finding Structual Wood behind Drywall

Use a drill with a small bit and drill in the area and direction the nails will go---that will tell you for sure.


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RE: Finding Structual Wood behind Drywall

"Use a drill with a small bit and drill in the area and direction the nails will go---that will tell you for sure."

This.

Go exploring with a 1/16 or 1/8 drill bit.

Any holes that might show are easily filled with Spackle.


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RE: Finding Structual Wood behind Drywall

Thanks,


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RE: Finding Structual Wood behind Drywall

Your surmise is correct. Exploratory with a finish nail; will be covered by crown anyway. Along the wall that is parallel with the joists, you may have a continuous nailing strip (a 2x4 or a full joist) the whole way, or you may have ladder blocks every 16" or 24". These would give you another nailing opportunity at the ceiling edge of the crown.
Casey


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RE: Finding Structual Wood behind Drywall

"Exploratory with a finish nail..."

Just do not hit the wall.

A small drill bit in a drill has a lot more control.


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