Check the old trusses.
How to repair rotted roof trusses.
If the roof truss has a small crack you will be using the two wooden boards to patch it up but if the crack is much more severe you should use the steel plates because they offer much stronger support to the damaged truss.
When replacing roof decking you first need to get rid of the old rotten section.
The truss ends are covered by roof but their underside is exposed to the elements.
No supportive structural areas are experiencing rot.
Attach the truss patches.
They are a frame shaped trusses.
The 4 sides of the bldg.
Place the 4 foot board against the flat side of the broken truss making sure that the same amount of patch rests on either side of the break or that the break is centered in the middle of the patch.
The basics of the process are as follows.
If the old trusses are too bad theses may require placing new trusses or complete restoration of roof.
Set the depth of your circular saw to the thickness of the roof decking.
The engineer s recommendations were specific.
The ends of the trusses are rotted out.
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.
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.
If these have only small portions with rot you can repair using the boards.
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.
The first thing you need to do is to assess the damage.