Roof Members Terminology

Slight vertical cut on the outside edge of truss bottom chord to make sure uniform nominal span typically 1 4 inch cantilever.

Roof members terminology.

When working on a roof it pays to be familiar with these terms. Here is a closer look at common roofing terms. Common rafter valley rafter valley jack rafter hip rafter hip jack rafter cripple jack rafter dormer rafter. As you can see in the illustration below roofs have hip rafters ridge boards jack rafters and more.

Eaves the area just below the lower end of the roof includes the fascia soffit and guttering. They do for the roof what the joists do for the floor and what the studs do for the wall. The edge of a roof which runs from eaves to ridge at a gable. The exposed end of a shingle.

Rafters are inclined members spaced from 16 to 48 inches apart. That part of a roofing waterproofing or flashing component that overlaps or covers any portion of the same or. Occurs where overlapping materials are seamed sealed or. The members making up the main body of the framework of all roofs are called rafters.

A horizontal member that establishes the lower edge of a truss usually carrying combined tension and bending stresses. 3 part of a suspended timber floor construction that provides a level bearing and. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. Post a question or comment about roof framing support construction specifications practices.

Dormer a vertical window built into the slope of a pitched roof. It is a type of resistant moulding that prevents water flowing near roof openings from infiltrating the roof. A condition where both the top and bottom chords extend beyond a support structure with no bearing at the extended end. An asphalt based roof cement formulated to adhere overlapping plies or asphalt roll roofing.

2 part of a flat roof structure that receives the ends of the flat roof joists. Don vandervort hometips. It is a waterproofing layer made of regular felt stacked above the solid. Fascia the vertical board secured to the ends of the rafters under the lower end of the roof to which the guttering is normally fixed traditionally timber nowadays usually upvc.

Flashing is found in valleys and at the bases of chimneys walls roof vents and plumbing vents. 1 part of a pitched roof construction that receives the feet of the spars sp ars and ceiling joist ends. They vary in size depending on their length and spacing. Collar ties rafter ties structural ridge beams.

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. Below are some commonly used terms that identify parts of a roof and types of roofing. A low slope or flat seeming roof covered with alternating layers of roofing felt and hot mapped asphalt and topped off with a layer of gravel.