They are a frame shaped trusses.
How to repair rotted roof truss ends.
The truss ends are covered by roof but their underside is exposed to the elements.
The ends of the trusses are rotted out.
No supportive structural areas are experiencing rot.
Use the wood screws and screw gun to securely attach the new piece to the truss itself.
Cut out the section of the roofing.
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.
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.
Make sure that you use construction wood screws and not 16 penny nails because the latter ones will cause greater damage due to the jolts caused when hammering the nails.
Place a stepladder or extension ladder under the rafter end with the most damage.
If you are using an extension ladder ask your helper to.
Measure from the end of the rafter tail to the area of good wood with a tape measure.
How to replace rotted rafter ends on a gable roof.
Place the second board or plate to the other side of the truss and fix it in the same way.
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.