Every slate on a roof overlaps other slates and is therefore angled and fragile see photo above.
Roof slates creaking.
With ordinary foot traffic slate can loosen or lift and hard.
During the day the wood expands.
The builder has brought in the roofing contractor who seems to have no idea what is causing it.
When it is windy there is a creaking noise from around the edges of the roof area which is heard very distinctly in the bedrooms.
New build house 18 months old.
Damaged slates are usually due to the roof settling frost or wind damage or things falling onto them this could be.
Loose stales are more often the result of the fixing nails failing usually.
Creaking wheezing or popping sounds happen at nighttime due to cooler weather.
Even the sturdiest floors sometimes require maintenance and repair and slate is no exception.
Creaking noise from roof when windy and intermittent cracking noise.
Bed frames made from strips of wood are attractive but sometimes they squeak as you shift on the mattress.
When walked on there is a good chance that the slate will crack and the bottom part of the slate will fall out see photos below.
How to fix slate tile flooring.
However time and weather will leave their mark on a slate roof and slates can become damaged or loose.