How To Repair A Rotted Roof Truss

Cut away the damaged area.

How to repair a rotted roof truss.

The ends of three of the trusses had rotted. The wood trusses extend about a foot outward past the start of the walls on 2 of the 4 sides of the bldg. If the old trusses are too bad theses may require placing new trusses or complete restoration of roof. I have a metal roof that has wood trusses supporting it.

The truss ends are covered by roof but their underside is exposed to the elements. The ends of the trusses are rotted out. The rotted part is. After removing the ceiling drywall and finding more mold the clients discovered that water had been coming in where the roof met the parapet wall.

You may need to cut a little extra to expose enough of the trusses and make sure you get rid of all the rotten wood. Although one of the strongest roofing methods to date uses trusses a broken roof truss can cause great damage to a building and could result in a collapsed roof. If these have only small portions with rot you can repair using the boards. Set the depth of your circular saw to the thickness of the roof decking.

Replacing rotted rafter ends on a gable roof is a matter of removing the existing ends and installing new wood. They are a frame shaped trusses. When replacing roof decking you first need to get rid of the old rotten section. The contractor who had done all the work up to that point replaced the entire roof under the deck including the sheathing.

This is why regular truss maintenance and repair is pertinent to the health of your roof. Although it is a straightforward process it is necessary to take your time to ensure a solid repair.