The home may not be designed to support the weight of this extra roofing material and it will sag.
Roof sagging in middle.
The first step is to always check the beams so that you can determine their condition.
Non foundational reasons for a sagging roof.
Common flaws include undersized rafters insufficient sheathing or too few rafter or collar ties.
Once you have your wood in place you need to lay.
If you find an infestation of.
Additionally if your roofer has used material that is much heavier than your previous roof it can sag for the same reason.
Next assuming that there are no further problems with your timber beams you need to measure the length of the beam.
Sagging roof lines can originate with the horizontal ceiling rafters.
Two or more roofs on one structure spell trouble.
A sagging roof can come in one of a few classic forms each with its own cause.