Roof Framing Definitions

With wood shingles or shakes this is the thicker end.

Roof framing definitions.

Mirrored pairs of rafters meet at a ridge and are connected across the base by a ceiling joist. Stick framing combines roof rafters with ceiling joists. More recently a roof truss means a prefabricated structural timber framework delivered to site to form part of a roof. The butt of a shingle is the end that faces down roof.

Most roofs utilize 16 inch spacings for strength and rigidity. Roof slope and rigidness are for shedding water and bearing any extra additional weight. Sometimes found in very large buildings where big rooms resulted in few load bearing walls. Parallel framing member installed horizontally to support floor and ceiling loads.

In this section we ll cover the most. Roofs must also be strong enough to withstand high winds. Collar ties rafter ties tension beams structural ridge beams. Some of these can support the roof and prevent ridge sagging and wall spreading.

Quite common until the 1920 s the function of a roof truss is to support the purlins. Types of roofs and define common roof framing terms. The exposed end of a shingle. Roof structure definitions support choices for sloped roofs cantilevered roofs cathedral ceiling roofs.

A beam placed perpendicular to wall suds above doors windows or other openings to carry the weight of structural loads. The primary object of a roof in any climate is protection from the elements.