Living in northeast Louisiana, concrete slab foundation & soil is "Gumbo" clay. No basement etc. Single story home.

For a few years, we lived with foundation issues, then in 2016, we flooded in March. At the demo stage, we decided that we would have a professional foundation repair company come in & fix the issue. Done my home work, got references & had what we think (as still think) is a great company out of the Dallas, TX area to come repair this before we went back with repairs/construction from the flood.

The foundation issues were repaired in April 2016, by placing foundation blocking etc (I wont go into the procedure) in 12 places on the east & south sides of the house. Worst area was on the southeast corner.
The service comes with a 5 year warranty that includes re-leveling if needed.

Today, here it is December 2016, 8 months later, & we are now seeing the crown molding separating from the ceiling. In a sense, this doesn't surprise because of our soil & what we discussed prior to the work being done. We discussed that this does sometimes happen & its why they provide the warranty for 5 years.

So, my question is not about what should I do or how should I handle this, etc. I am wondering if anyone has experience with this or if 8 months is common. Is this just going to take some settling & re-adjusting to to get this stable? I don't know that anyone can give any solid advice on this because these things vary I am sure from region to region, house to house, soil to soil & lastly, situation to situation. I guess I am just asking if anyone has been through this before or if you do this sort of work down here in the south.
Is this common after 8 months etc.

You gotta focus on Gumbo/clay soil in this situation. I'll say that, after the flood in March, we had a very, very dry summer. Now, over the past month, we have had more continual rain. Probably a couple of inches or so yesterday.
Today, I see the crown molding separating from the ceiling.

I'll call them tomorrow & have them come back. Fortunately, they do a LOT of work in this area & are here pretty often, so it shouldn't take them more than 2 or 3 weeks to get back over, adjust, re-level & add any blocking needed etc.

Any input on my future with this?

 

Have you set a level in various places on your floor? same with walls and ceiling. Caulk separating at the crown mold doesn't necessarily mean the slab is moving. Most common cause for crown issues is it not being nailed up securely especially if there isn't adequate blocking to nail it to.

 

What marksr says is ultimately true. To add to that thought, building materials will also shrink the most in winter months... due to colder temperatures and lower humidity. Its not uncommon to see crown moulding pull away from a ceiling. If things were jacked, there is bound to be some shifting, settling, and a few nail pops and caulk joints that have pulled away should be expected, even if the crown moulding was nailed solidly... more so if it was not. You see that a lot in the Midwest where it goes from 100 and humid to -20F and dry. Things expand and contract more than you think... caulk and paint has limits.

Could be partly due to the jacking, partly due to the seasonal changes. Solution at this point is to recaulk (possibly renail) and repaint.

 

I didn't get a sense of where you live & I don't mean the state, I mean the location of the property. Is it on a hill, is it at the bottom of the hill where all the water drains to?
All I know, is that regardless of the amount of rain (the more the worse it gets of course) rain gutters and diverting water away from foundation is at-most importance with foundation issues.

 

When I was in fla I painted a lot of new residential construction that was built on reclaimed swamp land They had engineers that determined what needed to be done to erect a stable house, they were normally pretty good. If the whole slab was to move the house would be out of level, if just one portion was to sink you'd have some windows/doors that wouldn't open/shut properly.