Replacing Rotted Roof Trusses

If these have only small portions with rot you can repair using the boards.

Replacing rotted roof trusses.

Slide one of the newly cut rafter legs into position directly next to the old rafter. The trusses needed to be lifted to their original height and cut flush with the inside face of the cmu wall with the rotted sections removed. Check the old trusses. Remove an area of the roof shingles from the edge of the roof to the upper line of the overhang using a 16 inch nail bar and hammer to pull the roofing nails.

Cut out the section of the roofing. If the entire rafter was rotten use the. The first thing you need to do is to assess the damage. Discard the wood in a garbage bin as you work to.

Use your tape measure to record the distance of both rafter legs. Inspect and assess the damaged section of timber and determine where it needs to be cut to prop the timber along it s length using suitably sturdy props such as acro props once supported cut off the damaged end leaving only solid un damaged timber now. The basics of the process are as follows. To reinforce the ends of the trusses 3 4 inch plywood gussets were to be attached to both sides of each truss with 10d nails 3 inches on center on all chords.

Measure the length of framing wood needed with a measuring tape. Remove the rotted wood with a chisel and pry bar. How to replace the rafters without removing the roof. If the old trusses are too bad theses may require placing new trusses or complete restoration of roof.

How to replace rotted wood rafters. The rotten wood will come away easily.