The air will still be able to exit your home but birds and other pests.
Continuing popping noises in the attic.
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.
Getting rid of these attic dwelling pests.
At night attic can sometime make loud creaking and cracking sounds.
It can ofter sound as if the roof is broken in some way or the roof is going to collapse.
Any type of food draws rodents and birds close to your home and makes them.
Avoid leaving pet food outside.
Seal off all openings.
It s thermal expansion and contraction.
In the case of a vent install a mesh wire screen.
As for the popping noise in the morning and evening that s a different mechanism.
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.
The creaking sound is perfectly normal and is caused by the movement of roof timbers responding to changes in temperature.
As the lumber expands it moves.
One problem that could be causing a popping sound in your walls or in the attic is pests.