Loud Thud In The Attic

If nothing obvious turns up you ll need to hire a roofer to look for a loose vent cap on the roof or a piece of flashing that s moving and transmitting the noise down through a rafter and into the.

Loud thud in the attic.

It is very loud on the first floor coming from different places on the ceiling not so loud on the second floor. The thump occurs several times a day usually in the evening. It is unrelated to plumbing usage or to start and stop of hot water heating system. No that s not the sound of chains rattling in the attic.

If it s not what paul ward said water hammer which usually occurs when a water valve abruptly shuts off then it s probably temperature change in the attic. Heating ducts as they cool also make banging noises as do. Sometimes two or three in a row a few minutes apart. It happens irregularly almost like someone dropped a heavy weight or fell and the house shakes a bit.

You can feel it on the first floor and second floor. There are a few possible sources for this sound but none of them ghostly or even worrying enough to call in the pros.