A ridge beam is a structural support that independently supports the high ends of rafters as necessary. The ridge beam runs from one end of the roof to the other under the roof line. It supports the pitch portion of the roof rafters so that they have something to attach to. This beam can be made of varied widths and lengths depending on the roof itself and the style. They are easy to install when the roof is being put up and they add extra support along the roof line. The beam can also be put in place after the rafters are up and the roof has been established.
In some cases you will need to hire a professional to put a ridge beam in on a roof that is not structurally sound. The professional might need to remove some of the roof in order to accomplish the goal. In other cases, when a roof line needs to be moved up to provide more room, the ridge beam might be put into place for extra support. This is something that a contractor may recommend if the roof is going to be high-pitched. It can be used to readily attach the rafters to in order to have more security in the roof.