Replace ceiling joists?


  #1  
Old 03-27-06, 02:51 PM
darinstarr
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Replace ceiling joists?

I am renovating an old attached workshop at my house and converting it for use as a music room. I have removed the walls & ceiling (1/4" plywood) and am ready to proceed (almost) with resilient channel and drywall.

I wanted to double-check on my ceiling joists before and see if they need replacement. They are currently 24" oc 2x4's, with an unsupported span of about 7'. I'll be using 1/2" drywall installed on RC across the joists.

Thanks!
 
  #2  
Old 03-28-06, 07:55 PM
Join Date: Jan 2005
Location: santa Rosa, California
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darinstarr,

2x4's at 24" o.c. will span 8'-6" no issue. so you are in good shape. With 1/2" rock you will need the rc at 16" o.c. otherwise you need to go to 5/8" rock.

good luck.

brian garrison
 
  #3  
Old 03-29-06, 10:36 AM
darinstarr
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Thanks Brian,

If I went without RC, would I need 5/8" rock with the joists at 24" oc? If I opted to apply 2 layers of sheetrock, would the 2x4's still be sufficient?

This room is oddly sized (13x13x9) which is making it difficult to work up a bill of materials without a lot of material wasted.

-Darin
 
  #4  
Old 03-30-06, 08:48 AM
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darinstarr,

Yep one layer 5/8" at 24" o.c. and yep the 2x4's should be okay with (2) layers of 1/2". With two layers be sure to stagger the joints.

Brian Garrison
 
  #5  
Old 03-30-06, 01:18 PM
darinstarr
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Great, thanks Brian.
 
 

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