Roof Framing Member Names

1 part of a pitched roof construction that receives the feet of the spars sp ars and ceiling joist ends.

Roof framing member names. Parts of a roof the main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang. The top horizontal framing members of a framed wall. Common rafter valley rafter valley jack rafter hip rafter hip jack rafter cripple jack rafter dormer rafter. Here is a closer look at common roofing terms.

As you can see in the illustration below roofs have hip rafters ridge boards jack rafters and more. When working on a roof it pays to be familiar with these terms. Horizontal beams supported by posts and used to support the mid span of rafters to cover longer spans these are used in large buildings like the traditional large old barns in the us. The upper sections of timber frame bents are often connected and reinforced horizontally by purlins which also support the roof deck.

Inspectapedia tolerates no conflicts of interest. They vary in size depending on their length and spacing. One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. The wood member at the intersection is called the valley rafter and the feet of short spars are nailed to the valley rafter.

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. 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. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. Rafters are inclined members spaced from 16 to 48 inches apart.

These vertical frame members are used in a truss configured with two symmetrical posts instead of or in addition to a single king post. Collar ties rafter ties structural ridge beams. It is a waterproofing layer made of regular felt stacked above the solid. The members making up the main body of the framework of all roofs are called rafters.

They do for the roof what the joists do for the floor and what the studs do for the wall. Roof truss parts explained. In the uk a concrete tiled roof would normally have rafters at 600 mm 24 in centers roof battens at 300 mm 12 in centers and ceiling joists at 400 mm 16 in centers. Roof framing involves a lexicon all its own.

Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. The tops of the inclined. Valley the inward angle of two sloping roof sections. The united states still uses imperial units of measurement and framing members are typically spaced sixteen or twenty four inches apart.