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Old 12-02-2018, 11:33 PM
 
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Quote:
Originally Posted by brownbagg View Post
its not the slab, You got a trusses roof system and during high moisture and low moisture period, the upper chore will dry out and lift, Its very common, what happen is the drywall people installed the blocking wrong so the ceiling drywall cant bend. what you di is have no screw within a foot of the wall so it can bend.

what to do, either live with it or crown molding

google trusses lifting
Ha! And here you are.
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Old 12-03-2018, 06:36 PM
 
72 posts, read 75,547 times
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Quote:
Originally Posted by brownbagg View Post
its not the slab, You got a trusses roof system and during high moisture and low moisture period, the upper chore will dry out and lift, Its very common, what happen is the drywall people installed the blocking wrong so the ceiling drywall cant bend. what you di is have no screw within a foot of the wall so it can bend.

what to do, either live with it or crown molding

google trusses lifting
Thank you for the info! You have no idea what a relief this is. I was worried that it was a slab problem and that = big $$$ most of the time. Now time to contact DR Horton to see if they cover this under the structural warranty. Not holding my breath. Tek thanks for linking this to the house forum also!
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Old 12-03-2018, 06:53 PM
 
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Quote:
Originally Posted by SGtoLV View Post
Thank you for the info! You have no idea what a relief this is. I was worried that it was a slab problem and that = big $$$ most of the time. Now time to contact DR Horton to see if they cover this under the structural warranty. Not holding my breath. Tek thanks for linking this to the house forum also!
I am skeptical of the truss lifting. Perhaps - but we do not have the environment that would enable this.

I agree it is not likely to be the slab. Post tension-ed slabs are pretty solid and do not bend. You might tip the whole house but not bend it.

Get an expert in to diagnose.
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Old 12-03-2018, 07:22 PM
 
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Post tensioned slabs fail on rare occassions if not constructed right, however I agree with SGTOLV it is the truss lifting issue in this case.
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Old 12-03-2018, 07:25 PM
 
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Quote:
Originally Posted by ragabnh View Post
Post tensioned slabs fail on rare occassions if not constructed right, however I agree with SGTOLV it is the truss lifting issue in this case.
And I remain unconvinced. A screw up in the truss design is more likely. We do not get the thermal or other environmental difference between the upper chord and the lower. They are both dry and hot.
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Old 12-03-2018, 08:33 PM
 
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Well lower chord of the truss is insulated, top chord is not. But the question is that, does the gap at interior walls changes between summer and winter, or it is always there constant in width or increasing with time.
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Old 12-03-2018, 09:00 PM
 
11,826 posts, read 4,438,212 times
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Quote:
Originally Posted by ragabnh View Post
Well lower chord of the truss is insulated, top chord is not. But the question is that, does the gap at interior walls changes between summer and winter, or it is always there constant in width or increasing with time.

And if the chords are subjected to the same environment it makes no difference whether they are insulated or not.

It is possible but not probable. So get an expert to see what is causing it.
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Old 12-03-2018, 11:03 PM
 
244 posts, read 234,700 times
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Quote:
Originally Posted by lvmensch View Post
And if the chords are subjected to the same environment it makes no difference whether they are insulated or not.

It is possible but not probable. So get an expert to see what is causing it.
Disagree, lower chord sits on top of cooled or heated house and is insulated as well, upper chord is the opposite and is below the roof and is more subject to exterior conditions with no insulation whatsoever.

Anyhow it goes back to the question that I posed in my previous response, this should give a clue as to whether it is Truss or slab issue.
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Old 12-05-2018, 03:53 PM
 
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I'm not a structural engineer, but it sounds like either a serious structural issue, or drywall was incorrectly installed. Either way, the builder is liable.
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Old 12-05-2018, 05:51 PM
 
72 posts, read 75,547 times
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Quote:
Originally Posted by equid0x View Post
I'm not a structural engineer, but it sounds like either a serious structural issue, or drywall was incorrectly installed. Either way, the builder is liable.
Let's hope against the structural issue option. Yesterday evening I turned on the heater for the first time this season and I could hear the trusses popping like crazy.
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