Step 1 the first step is to the basement first.
Roof sags in middle old garage.
Roofs sags for various reasons.
More than one roof coating may have been installed.
1 there are 2 support beams that run from front to back of the 23 garage.
When the original roof wore out a second and maybe even a third roof was laid over the original roof.
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.
With the joist back in its original position place one section of the angle iron on the uppermost section of the rafter just before the area where it is sagging or broken.
This extra weight may cause sagging.
Straighten out your old house s sagging roof and get rid of those cracks in the wall with these easy to follow steps.
Attach it to the beam with carriage bolts but do not tighten completely.
Check the ceiling for sagging by attaching a string on one end of the beam and run it along the bottom edge of the beam.