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Sagging, underconstructed ceiling repair


danwallie's Avatar
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Join Date: Sep 2006
Posts: 3
MN

09-19-06, 05:06 AM   #1  
Sagging, underconstructed ceiling repair

I have a single level brick ranch with a 22'x11' addition. The addition had fiberboard walls and paper tile ceiling, which I undertook this week to update with drywall. I was shocked when I ripped out the tiles to discover that the ceiling joists are 2"x4"x12's running the length of the room (22') with a 24" o.c. spacing and mated together in the middle of the room with 1/2" plywood. Needless to say, there is quite a sag in the middle of the room. My two questions are: 1) What do I need to do to support 5/8" drywall, and 2) What is the best way to go about it? Thanks for any advice you can give!

-Dan

 
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Wayne Mitchell's Avatar
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Join Date: Dec 2005
Posts: 3,188
CT

09-19-06, 08:16 AM   #2  
Dan - Are you sure that your house doesn't have a trussed roof system? They are typically made from 2X4s spaced 24" OC. The piece of plywood in the middle on a truss system is a nailer for attaching the truss chords.

How much is your ceiling sagging and have you considered using 1/2" sheetrock. I don't see any need for the additional weight of 5/8".

 
danwallie's Avatar
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Join Date: Sep 2006
Posts: 3
MN

09-19-06, 09:06 AM   #3  
Trussed roof

Wayne,

I think you're right. I never bothered to look above the insulation. The center of the room is bowed about 1" below the ceiling around the edges, so how can I level it? I would guess that the settling foundation has caused the entire roof truss structure to settle as well.

Thanks for your help,
Dan

 
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