06:03PM | 02/26/03
Member Since: 02/25/03
2 lifetime posts
Our house was built 2 years ago in upstate New York. It has a finished basement with a slab floor.

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!!


04:50AM | 03/02/03
Member Since: 11/02/02
69 lifetime posts
Bizarre. When I was a kid, I remember our forced-air heating ducts would bang and boom a fair bit from the expansion and contraction. I even recall that our furnace would boom occasionally. Could that be the source of your banging?


03:35PM | 03/02/03
Member Since: 02/25/03
2 lifetime posts
Thanks Jonathan,

I think you may be right about the furnace and ducts. I spoke with a local builder and he thinks it is that too.

Thanks for helping me.


04:22PM | 03/10/03
Member Since: 03/09/03
4 lifetime posts
My house makes loud banging noises on ery cold nights. It is usually the roof trusses contracting. The noise is due to the fact that the upper chord is contracting due to the cold and the bottom chord buried in insulation is realitively warm. Sometimes when the y move it will caus ice build up on the roof to crack as well. Other things that are noisy is vinyle siding.


04:31PM | 03/10/03
Member Since: 03/09/03
4 lifetime posts
I tried to reply earlier, but it did not work. Suds like the roof trusses are making noise due to the cold. It is very common nothing to worry about.


09:54AM | 08/24/16
I have what sounds to be very similar sound. It happens year round (not the furnace). It started after our house was hit by lightening. The bang, one single boom, comes from the end of the house where the lightening struck. It is loud. Visitors think that something has hit the house and go outside to see what it was. Any ideas? The lightening went down the gas main, but they say it is okay.
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