How To Repair Cut Roof Trusses

To cut roof rafters start by fixing the stair gauges on your framing square to the dimensions of your pitch.

How to repair cut roof trusses. The phrase cut a truss should throw all builders into a cold sweat. If a part of a truss has been cut out then replacing the board or piece cut out is generally not to hard or expensive. Truss repairs can be quite easy. Once you cut out the roof trusses the load bearing will shift to your new supports.

Next set the framing square on top of the rafter beam and use a pencil to trace the outside edge of the framing square s tongue. 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. Tighten that come along so as to exceed the original tension stress in the lower chord and its orignal support positions. Take away the come along.

Apply the second patch to the other flat side of the truss and in line with the first patch. Attach a cable and come along to the new ends of the cut truss lower chord new steel pieces. Now measure and cut a replacement piece of timber. Localized damage to one or two trusses will typically not result in structural failure of the roof system but could cause the roof or ceiling to sag.

Roof trusses are engineered components. Next sit the new timber into the repair plate s. The first thing you need to do is to assess the damage. Once you ve marked the lines use your pencil to draw the diagonal length on the rafter.

Run a support header underneath the ridge of your roof an engineer will be able to find the correct type and size for you. The roof truss will regain its strength with the repairs. I write and teach on this subject if you d like to learn more it is never okay however to snip or heavily notch a truss. If the old timber is 8 x 4 inches then that is what you will need to use.

Making any adjustments to your trusses without adequate supports in place can cause huge problems. When damaged or altered this can effect structural integrity of th e roof system. This has to be the same size in width and depth as the old e g. Depending on the manufacturer will depend on the types of plates you have.

If a board is cracked then placing a similar board on each side of the broken one and bolting or nailing the three together may correct the issue. This required cutting a truss.