The home may not be designed to support the weight of this extra roofing material and it will sag.
Roof sagging in middle.
When the roof framing is assembled two ceiling rafters are often joined together to create a longer span.
Common flaws include undersized rafters insufficient sheathing or too few rafter or collar ties.
In a stick frame non truss sloped roof these issues usually cause the roof ridge to sag in the middle giving it a swayback look but can also cause one side of the roof to sag.
If you find an infestation of.
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.
Once you have your wood in place you need to lay.
Non foundational reasons for a sagging roof.
Two or more roofs on one structure spell trouble.
A ridge that droops in the middle forming that unintentional western design feature likely is due to undersized rafters and or missing or inadequate internal bracing rafter or collar ties.