Roof Truss Damage

The trusses on this townhouse supported a third floor deck with a living space below.

Roof truss damage.

Standard repair detail to pad bottom chord. Damage from a roof leak. Standard repair detail to pad bottom chord. The ends of three of the trusses had rotted.

Roof truss damage and repairs. 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. In residential construction this can also be a problem when selling a house because home inspectors often find damaged or roof trusses. 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.

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. Roof truss uplift can be diagnosed as the cause of nail pops and cracks or separation between the ceiling and wall top. Webs and damaged or missing chord splice plates 2x3 members mii rep01a2. Roof truss repair details.

If a lot of trusses are damaged or one has been significantly modified or cut then consulting a engineer is wise. These trusses are usually engineered by a structural engineering company to carry a specific roof load. 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. Standard repair detail for broken chords webs and damaged or missing chord splice plates 2x3 members.

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. 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. When they found extensive mold they removed the rest of the drywall exposing an adjacent cmu wall with pockets that supported the trusses. When damaged or altered this can effect structural integrity of th e roof system.

After seeing water damage on some interior drywall the clients opened up the wall below the trusses. Joint failure modern roof. Four main trusses were damaged in the fire along with a couple of others. This is why regular truss maintenance and repair is pertinent to the health of your roof.

What causes roof truss failure. 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. Penetrating damp water leaks these lead to rot and insect attack even in treated timber which is not always. In some cases the entire truss is replaced.

When a truss becomes damaged cut or modified there is a chance of a structural overload or that they will not perform properly. Truss chords and webs can be repaired using properly sized and attached lumber scabs over the damaged areas.