Roof Framing Definitions

A beam placed perpendicular to wall suds above doors windows or other openings to carry the weight of structural loads.

Roof framing definitions.

Some of these can support the roof and prevent ridge sagging and wall spreading. The primary object of a roof in any climate is protection from the elements. Mirrored pairs of rafters meet at a ridge and are connected across the base by a ceiling joist. The rafters are usually positioned directly above the wall studs.

In this section we ll cover the most. Most roofs utilize 16 inch spacings for strength and rigidity. Types of roofs and define common roof framing terms. Stick framing combines roof rafters with ceiling joists.

Roofs must also be strong enough to withstand high winds. Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center. Sometimes found in very large buildings where big rooms resulted in few load bearing walls. Roof structure definitions support choices for sloped roofs cantilevered roofs cathedral ceiling roofs.

Parallel framing member installed horizontally to support floor and ceiling loads. In profile the framing of a conventional pitched roof forms a triangle. Quite common until the 1920 s the function of a roof truss is to support the purlins. Roof slope and rigidness are for shedding water and bearing any extra additional weight.

With wood shingles or shakes this is the thicker end. The butt of a shingle is the end that faces down roof.