Roof Framing Terminology

A building s frame is the skeleton that supports all of the finishing features like drywall doors windows and even your roof.

Roof framing terminology.

These are short spars that run from a hip to the eves or from a ridge to a valley. Some of these can support the roof and prevent ridge sagging and wall spreading. It is a waterproofing layer made of regular felt stacked above the solid. This is to help prevent deflection and sag in the roof.

Key timber frame terminology. The inward angle of two sloping roof sections. Here is a closer look at common roofing terms. Roof framing involves a lexicon all its own.

An example of each is shown in figure 2 1. When repairing or replacing a roof it pays to be familiar with these terms. Roof structure definitions support choices for sloped roofs cantilevered roofs cathedral ceiling roofs. It is simple in design economical to construct.

However green building uses a single top plate and ensures that rafters and ceiling joists sit on the plate directly over the studs. Sway bracing there are a few ways to sway brace the wall. Framing consists of a doubled valley rafter in the middle that extends from a top plate corner to a second ridge board with angled jack rafters for support. Top plate or plates in conventional western platform framing there are two top plates.

Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to. Common types of roofs and basic framing terms. Cripple rafters or jack rafters between chimney and house eaves rafters that do not extend the full distance between house eaves and the roof ridge board see roof framing ties beams for a description of roof framing components including collar ties rafter ties structural ridge beams other roof framing components problems. A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework.

For efficiency in both construction effort and material use timber frame structures are typically erected in boxlike sections called bays consisting of two bents one on each end along with additional frame members that connect the bents and form the structure. Collar ties rafter ties tension beams structural ridge beams. Gable a gable roof has a ridge at the center and slopes in two directions. A bearing timber forming part of a suspended timber floor to which the floor boards are nailed to the top and a ceiling may be attached beneath or.

A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. Includes illustrations that show roofs have hip rafters ridge boards jack rafters and more.