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Old 07-02-2013, 05:57 AM   #16
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sagging ceiling, roof sag


You certainly want to secure the surface that your rafters are setting on. Pull it back straight as you can then install collars to keep it from pushing back out. The porch ceiling joists should have held it. Investigate what is going on there. Is the outside wall bowed out too?
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Old 07-02-2013, 06:35 AM   #17
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sagging ceiling, roof sag


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Originally Posted by DanFR View Post
Good idea. one side of my roof rafters are the rafters over my porch. This is not part of the 22 foot span. Porch has its own ceiling joists. My porch has pushed out about 1.5 inches where the roof has flatened out. When I'm jacking up my sagging ceiling joists, is there any hope of pushing the porch 4X4's back into a more vertical stance. My SE said it's fine where it is, just support it better. I've got a friend that is going to help me and he says he has a cranking pulley that may pull the wall back upright if we take pressure off the roof with the jacking up of the joists. Any sense to this?

you are talking about years of outward pressure causing the bowed out walls. it is not that easy to pull back in all those years of slow spread. the SE is right but you can try and get some of the spread out just do not expect to get it all out back to original plumb walls. the joists did not expand with the wall spread either so the joist to wall plate connection has been compromised from the spread plus the joists themselves have sagged downward mid span pulling inward even further from the walls - that is something to consider and work out as the walls pull in. the rafters have to go up the same time that the walls get pulled in etc... plan,plan,plan before doing any work and try and work out all the variables. sometimes you have to go at it a little at a time to get it all back closer to original placement. lots of temporary bracing until you can lock it all back together is your best bet.

Last edited by hand drive; 07-02-2013 at 06:37 AM.
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Old 07-02-2013, 09:11 AM   #18
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sagging ceiling, roof sag


so maybe once i take down all the dry wall, set some jacks under the few king posts and ceiling joists, slowly crank up the roof to relieve a bit of pressure, and try and pull the wall back a bit might work. Has anyone done this?
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Old 07-03-2013, 06:00 AM   #19
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sagging ceiling, roof sag


I did a couple of years ago while rebuilding the roof on the front of my house. The ceiling joists ran perpendicular to the roof rafters so over the years there was a 4" bulge on one side. This side was the weakest due to a crappy fireplace installation that gutted that part of the wall. I used a come along and some chain attached to the rafters at the widest spot to pull the wall back in. I was lucky, it came right in without any fuss.
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