This is the first time i have seen the tiles installed on a 2x4 truss roof system 24 oc with osb decking.
Roof tiles have settled on roof trusses are ok.
Then the beam or roof may sag.
It might be something.
Roof trusses will be delivered to site.
The trusses will be securely vertically propped prior to being lifted to the roof area.
If you can see a dip curve or swag on the peak when standing in the street your roof has a problem.
This may have been caused by any number of factors.
If a roof has been re roofed with heavier roofing material than the original roof was engineered for.
If the original roof was wood shingles a light weight material and it was replaced with concrete tile a heavy material then the roof may sag or be wavy because it was not structurally designed to carry the heavier load weight.
Cracked or damaged rafters or trusses.
I e the original roof was a light wood shingle roof and the new replacement roof is a concrete tile roof weighing 5 or 10 times more than the original roof.
This is an upscale builder 300k range.
Hammers nails and other hand tools will be.
What causes a sagging roof line.
Roof lines should be arrow straight.
A new roof that is of a heavier material.
The weight of these roof tiles brings up another question.
In the past it has been stick construction 2x8 s 2x10 s or 2x12 s.
Mobile crane for the installation of trusses roof ladder fixed scaffold for access.