Roof trusses are the frames that are made up of timber, which is nailed, bolted or pegged to one another in order to form a shape, which is of structural competence and great strength. Trusses are used to bare the weight of the covering located on the roof, as well as any adverse weather loads, including snow, wind and rain. Trusses can come in many different shapes and sizes, as they must be of correct size depending on the various different designs of the roof. Trusses are used to help prevent wall from bending and flexing as well as helping buildings with several stories to be structurally sound.

The roof trusses have mainly three different properties, the strength of timbers, and the distribution of the load and the connection of the parts. The design of roof trusses are vitally important, as certain designs can be used for different purposes or intentions. No matter what intention the truss may be set out to achieve it must be sure that the structure is stable.

Some of the problems related to roof trusses include damp, especially in older building. There are some preservatives that can be used to help prolong the life of trusses, as well as help recover them. Boron is a useful resource in solving problems within these trusses and is widely used across the industry.