Step 1 measure the damaged rafter.
How to repair a cracked roof rafter.
This article describes a diy repair project using a site built spreader to straighten sagged roof rafters and decking.
A rafter might split when heavier roof tiles are.
When considering what to do about sags in a roof start by noticing if the sag is in sheathing between rafters page top photo0 or sagging along the length of the rafters.
Rafters can also be damaged by a blow to the roof from falling branches.
Repairing this is called scabbing.
Overview from time to time an attic rafter will split along a knot typically after having a new roof installed because of the workers walking around on it.
Obviously this is not a good situation as it can cause the entire roof to fail if not addressed.
Fixing a cracked or split rafter in your attic ensures that the roof will receive the necessary support.
A cracked roof rafter can create a sagging and unsightly roof.
An l channel that is 1 by 1 and at least 2 feet long should be.
Roof rafter decking sagging.
This board is a section of lumber that is the same thickness as the rafter and 2 feet longer on each side of the damaged section.
The important aspects of this repair is the length of the split as you will need to adequately cover it.
A cracked roof rafter needs to be repaired and can be done byf an experienced do it yourselfer.