The first and foremost step is to find out how many and from where the rafters are sagging.
Sagging roof rafters repair.
With a pair of rafters pushed apart to straighten the sagged roof a new mid span cross tie will be nailed in place.
Force open the cracked end of a sagging rafter with a wood chisel.
The first step is to find out how many rafters are sagging and if anything else is damaged.
If there is any other damage it should also be fixed before moving to the next step.
Place a fascia board up under the roof sheathing and nail it with a hammer across the ends of the rafters to strengthen them.
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.
Therefore giving them a good look is critical when addressing sagging bowed or wavy roofs.
One of the most common causes of roof issues are problems related to the rafters or trusses.
Step 1 the first step is to the basement first.
I prefer the term mid span cross tie to collar tie because i associate collar ties with placement high closer to the ridge.
You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof.
After measuring the damaged area between your roof trusses or rafters cut a piece of 1 2 plywood that will cover the area.
However it is important to fix the rafters before doing any other work to the roof.
If the roof sags between the rafters or trusses the most likely cause is sheathing that s too thin for the area it covers.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier.
This may be problematic in winter months but allowing the roof to continue to sag can lead to greater problems such as a cave in.
Driving nails into it might make it worse place the plywood and styrofoam side up against the damaged roof decking.
Remove the chisel and wet the crack with a wet rag.
Straighten out your old house s sagging roof and get rid of those cracks in the wall with these easy to follow steps.
Actuate the intensity of damage.
They have issues for a wide variety of reason including damage from wind storms overloading from ice and snow leaks etc.
The fix here is to replace the thin sheathing with thicker sturdier sheathing.
Spread polyurethane glue into the crack with a stiff bristle brush.
