It can ofter sound as if the roof is broken in some way or the roof is going to collapse.
Continuing popping noises in the attic.
The air will still be able to exit your home but birds and other pests.
The creaking sound is perfectly normal and is caused by the movement of roof timbers responding to changes in temperature.
Seal off all openings.
Mice rats birds or other animals may have entered the home and are chewing digging and pecking on the interior of your home from the attic or inside the walls.
In the case of a vent install a mesh wire screen.
It s thermal expansion and contraction.
The sun hits your roof and heats it up.
A loud popping noise in the attic is often very common especially when there are extreme temperature differences such as large and rapid fluctuations between night and day temperatures.
Any type of food draws rodents and birds close to your home and makes them.
Also when the temperature becomes very hot or very cold or when sunlight warms one part of a home and not another these noises may become more pronounced.
Avoid leaving pet food outside.
One problem that could be causing a popping sound in your walls or in the attic is pests.
A california friend of mine has such a creaking overhead and it bugs him no end.
Undoubtedly the noises come from the expansion or contraction of the roofing or ceiling framing members.
At night attic can sometime make loud creaking and cracking sounds.