Roof Truss Damage

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 truss damage. After seeing water damage on some interior drywall the clients opened up the wall below the trusses. Joints are often repaired using plywood or osb gussets that are properly sized and attached to transfer 100 percent of the forces in that joint. When they found extensive mold they removed the rest of the drywall exposing an adjacent cmu wall with pockets that supported the trusses. What causes roof truss failure.

Rot and insect attack usually associated with dampness but mainly in older pre second world war properties where. Damage from a roof leak. Although one of the strongest roofing methods to date uses trusses a broken roof truss can cause great damage to a building and could result in a collapsed roof. Here we provide a definition of arching roof truss damage or roof truss uplift and we explain why truss uplift occurs where truss uplift cracks will appear and how roof truss uplift cracking can be avoided or corrected.

In residential construction this can also be a problem when selling a house because home inspectors often find damaged or roof trusses. The ends of three of the trusses had rotted. Roof truss repair details. When a truss becomes damaged cut or modified there is a chance of a structural overload or that they will not perform properly.

If a truss is damaged in the field the truss should be laid flat on a solid level surface and the repair completed before installing the truss. Standard repair detail to pad bottom chord. Webs and damaged or missing chord splice plates 2x3 members mii rep01a2. The trusses on this townhouse supported a third floor deck with a living space below.

Roof trusses are engineered components. Roof truss uplift can be diagnosed as the cause of nail pops and cracks or separation between the ceiling and wall top. This is why regular truss maintenance and repair is pertinent to the health of your roof. These trusses are usually engineered by a structural engineering company to carry a specific roof load.

Four main trusses were damaged in the fire along with a couple of others. Roof trusses are triangular timber frames which are nailed pegged or bolted together in order to create a supporting structure for your actual roof and although they are generally bought pre fabricated you can still easily fix them once they. If the truss is already installed it is important to temporarily brace or support the truss to prevent further damage to the truss and potential danger to workers before conducting the repair. The trusses are covered with plywood and then dried in.

Standard repair detail to pad bottom chord. If a lot of trusses are damaged or one has been significantly modified or cut then consulting a engineer is wise. In some cases the entire truss is replaced. Standard repair detail for broken chords webs and damaged or missing chord splice plates 2x3 members.

Joint failure modern roof. Roof truss damage and repairs.