A roof s primary purpose is to protect the interior of a building by keeping out the elements and a roof can t stave off the weather if it s riddled with holes.
Roof tiles have settled on roof trusses are ok.
A new roof that is of a heavier material.
Then the beam or roof may sag.
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 may have been caused by any number of factors.
The trusses will be securely vertically propped prior to being lifted to the roof area.
If a roof has been re roofed with heavier roofing material than the original roof was engineered for.
What causes a sagging roof line.
Materials handling storage safety information.
If you can see a dip curve or swag on the peak when standing in the street your roof has a problem.
This is an upscale builder 300k range.
Roof lines should be arrow straight.
Cracked or damaged rafters or trusses.
Mobile crane for the installation of trusses roof ladder fixed scaffold for access.
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.
The weight of these roof tiles brings up another question.
Each time you drill into your roof.
It might be something.
Roof trusses will be delivered to site.