Replacing Rotted Roof Joists

The rotten timber should be removed first and the end of the joist treating to discourage any further rot.

Replacing rotted roof joists.

Measure the dimensions of the old rafters beneath your roofing surface. Slide one of the newly cut rafter legs into position directly next to the old rafter. However replacing the entire joist gives the home much better structural integrity. If you feel like the new joists you put in need more integrity you can add vertical boards.

A neat trick contractors do when dealing with dry rot is add another level to the floor joists. These plates are a quick and neat solution for joist ends that aren t going to be seen. To replace the joist you need to measure the entire length. The joist plate is bolted to the timber making the joint b as strong as the original joist.

Use your tape measure to record the distance of both rafter legs. Put the new piece of wood in using screws that are twice as long as the thickness of the new wood. Different sizes are available to suit the joist section and the amount the joist will have to be cut back. To eliminate the possibility of holes in between joists you can use wood glue affiliate link to amazon.

To repair a roof joist you will need to either replace the entire joist or use a spliced in piece of wood. How to replace the rafters without removing the roof. I used the same size board 2x6 and cut out one piece to replace the rotted piece. A new piece of timber is cut a to replace the damaged piece and the joists plates are positioned ether side of the joists with the end of the joist plate right up against the edge of the timber so it is the joist plate that site on the bearer a.