Repairing Roof Timbers

Slots in a roof repair beam filled with resin.

Repairing roof timbers.

Beetle infestation timber decay poorly executed alterations and undersized rafters are common problems. As the roof covering was removed the state of the rafters was revealed. Made to fit your beam. These tend to be eaten away by woodworm and the roof beams then move opening up the joints.

Fragments of rotten timber and roof felt. Roof repair prop wet rotted roof timber. Where serious problems are suspected call in a surveyor or structural engineer. These are compounded when a roof covering is replaced with a heavier material such as concrete tiles.

The options for replacing roof joists are the repair of the beam with timber resin materials repairing using specialist repair plates or where extensive damage is present the removal and replacement of the entire joist and truss. This type of roof repair includes replaced rotted purlins ridge beams rafters and trusses. Corbel conservation s robin russell provides an introduction to structural timber repairs in historic buildings. Resin repair with tie bars and injected resin can solve this problem.

In most cases complete replacement of a timber will be impossible by traditional means without scaffolding or roof removal but a trs will allow the low disturbance and therefore cheaper repair of beams roof purlins tie beams lintels joists and rafters. It became apparent that about half of the pine boards forming the roof deck were damaged beyond repair. The article concludes with a section outlining approaches to the problem of roof spread. This method can even be used for repairing flag poles.

The emphasis of the article is on repair and reinforcement options including the use of scarf repairs stainless steel flitch plates and the use of resins. Also the rafters that spanned the full width of the mono pitch shed were rotten at the lower end. How to repair roof trusses.