On Oct 22, 6:02 pm, hands on wrote:
On Oct 22, 6:23 pm, "HeyBub" wrote:

Steve Barker wrote:
They look normal to me. Concrete cracks.

But if it has rebar it doesn't separate.

My builder used fibre reinforced concrete-no rebar.My patio door is
not square and he told me he can adjust the rollers.I tried that and
one of his 'handymen" tried with no success.He pretty much is refusing
to fix anything.

Surely there is rebar in the footings.

I don't want to sound like I'm defending your builder, because I'm
not. But I don't think the door being out of square is related to the
concrete cracking. Looks more like it was set out of square---if
something had moved that much, you'd see more sheetrock cracking than
a few nail pops. It needs to be taken out and reinstalled plumb,
level and square. The cracks are unsightly and I wouldn't be happy
about them either, but whether they indicate major structural problems
is not a foregone conclusion. Calling an engineer is a good idea.
Good luck.