How To Repair A Broken Roof Rafter

Repairing this is called scabbing.

How to repair a broken roof rafter.

Tighten bolts with a wrench. You should attach the l channel only in the four holes furthest away from the damage. To secure the l channel you will run 2 3 8 inch lag bolts into the bottom and the side. 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.

Mark each piece of the. Pull the old rafter end away from the roof eave. How to repair broken rafters step 1. Slip a bolt through each hole then place a flat washer lock washer and nut on the threads of each bolt.

Measure mark and cut the piece of framing lumber to length using a circular saw. Add 4 feet to this measurement. You will drill two holes in the bottom and two holes in the side. Slide one of the newly cut rafter legs into position directly next to the old rafter.

How to replace the rafters without removing the roof. Attach the piece to the. Measure and mark two pieces of hardwood lumber to this length using the tape measure a carpenter s pencil and. High enough to give room to nail the mid span cross tie at the desired location.

Hold the replacement against the end of the remaining rafter. Measure the length of the damaged area on the rafter using a tape measure. Make two lines on the side of the replacement rafter end and the end of the rafter 1 inch from the top and bottom edges. This is where your wooden dowels will insert into the wood.

The important aspects of this repair is the length of the split as you will need to adequately cover it. Obviously this is not a good situation as it can cause the entire roof to fail if not addressed. With the roof rafter pair straightened clamp new mid span cross ties in place and then nail the tie ends to the rafters. Position the piece flat alongside the cracked rafter with the lower end at the wall.

Drill a pilot hole in the wood through each of the open holes in the angle iron.