Two or more roofs on one structure spell trouble.
Roof sagging in middle.
Once you have your wood in place you need to lay.
Sagging roof lines can originate with the horizontal ceiling rafters.
When the roof framing is assembled two ceiling rafters are often joined together to create a longer span.
Next assuming that there are no further problems with your timber beams you need to measure the length of the beam.
Non foundational reasons for a sagging roof.
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.
The home may not be designed to support the weight of this extra roofing material and it will sag.
The first step is to always check the beams so that you can determine their condition.
If you find an infestation of.