How To Repair Attic Truss

How to fix a broken roof truss step 1.

How to repair attic truss. Trusses are the major engineered wood component used today with 63 7 market share for roof trusses and 31 7 market share for floor trusses. Standard repair detail to replace a missing stud on a gable truss. When working in tight and cramped quarters in the attic be careful where you step. Truss repairs can be quite easy.

Determine the size of the roof truss to be repaired. Standard repair detail to pad top chord to match roof plane 2 1 2 minimum mii rep11. Standard repair detail to pad top chord to match roof plane 2 1 2 minimum download. 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.

Cut two pieces of lumber 4. Sometimes structural screws are also used for truss repairs. 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 the second board or plate to the other side of the truss and fix it in the same way.

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. Use the wood screws and screw gun to securely attach the new piece to the truss itself. When using nails to joint truss members it is also necessary to use lumber plywood or oriented strand board osb to join the members. 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.

For typical roof trusses used in light frame construction bolts are usually not used because of spacing requirements. The basics of the process are as follows. To keep the plywood from cupping under the load 2x4 squash blocks were to be inserted between the top and bottom chords. Trusses come in different lumber widths 2 by 6 or 2 by 8.