Perhaps the sheathing is the problem with your sagging roof.
Tempory fix for sagging roof.
Use instructions from my page how to fix a sagging floor before you continue trying to fix the roof sagging issue.
Start by fastening temporary wood blocks to the rafter tails image 1.
If that is the case you need to.
This will protect the original porch.
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.
With the old beam uncovered the temporary beam can be placed on the braces you ve made images 1 and 2.
Before you try this method you need to determine whether or not the sheathing that remains is strong.
If the line does not continually follow the bottom of the beam and the bottom of the beam is below the line the beam is sagging.
Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your.
If you notice wet spots on your ceiling find a shingle in your yard or hear the dreaded dripping of water in your home you probably have a roof leak roof leaks typically lead to many other problems in your home and it can be challenging to know what to do when your roof starts leaking.
Fixing a sagging roof by bolstering the beams replacing sheathing.
Temporary fixes for a leaking roof.
The first step is to the basement first.
Also inspect the metal or plywood gusset plates used where your wood meets on a truss.
Flashlight bolts and washers chisel drill measuring tape nail gun and nails steel l channel plywood gusset plywood lumbar strapping styrofoam.