What happens is during the cold winter months wood trusses in your attic and or on your outside deck contract and make a loud booming noise as they move.
Roof noise in winter.
Also temperature related movements in roofing materials can cause annoying roof noises that lead to building noise complaints by the occupants.
Roof cracking sounds are somewhat common in the winter.
See noise control for roofs for details.
Strangely enough there are no noises in my daughter s unit just mine.
The timbers and framing lumber will crack before the collapse but sometimes there s not a lot of warning.
Popping cracking and snapping sounds coming from their roofs especially when the colder weather hits is a common problem.
On flat and low slope roofs expanding freezing ice can fracture with a terrific booming noise.
The new roof was added on top of the existing flat roof.
The most dangerous situations are when the roof is about to collapse because of too much snow and ice.
There is no noise in the winter.
Also see banging booming noise diagnosis cure.
The sun shines on your roof all day warming the tiles and sub roof.
What you re hearing however is the effect of low temperatures on the building materials.
It starts again in the spring.