The problem is that during the last week or 2, the house is making lots of very loud bangs - especially at night but also during the day.
We presume it's something to do with the long, cold winter cooling the slab. Metal support posts are anchored right into the slab throughout the basement. Could it be something to do with these posts or the metal beams on top of them contracting? If so, do you think we have any reason to be concerned? The bangs are loud enough to wake us up during the night and scare the kids!!
There are no cracks that we can see on walls or ceilings. We cannot see the slab as it has a carpet on top.
Your thoughts would help a great deal - thanks!!