Repairing a broken roof truss

A damaged truss is a very serious problem that can result in a collapsed roof. If you want to keep the structure’s solidity you will need to regularly check and make the necessary repairs to the roof trusses. Roof trusses are those triangular timber frames that are nailed and bolted together to create a support structure for the roof.

Some of the materials that you will need are:

  • 3 wooden boards of 4 feet in length or 3 steel plates 4 feet in length
  • Wood Screws
  • Screw Gun
  • Ladder


First of all you will need to inspect the truss and assess the damage. For cracks you can use wooden boards to patch it up, but for more severe cracks you will need to use metal or steel plates. So be careful and assess the damage properly.


So, get on a ladder and begin the repairs. Position yourself at level with the truss and not beneath it to avoid extra strain on yourself. Take two wooden boards or steel plates and then position them so that the crack in the truss is in the middle of them. Use some wood screws to secure them. Do not use nails, as these can cause even further damage. You can also use a third plate to secure the lower side of the truss.

Finishing the repairs

Now check the resistance of the plates or boards. Apply some pressure to the truss and see if it holds. This test is necessary to see if the truss is even more damaged than you thought it is. Clean the area.

If the damage is too severe, you should think of replacing the truss. Call a professional for the job.

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