Basic terms and descriptions.
Roof members terminology.
The wood member at the intersection is called the valley rafter and the feet of short spars are nailed to the valley rafter.
Terminology commonly used in the metal building industry.
Collar ties rafter ties tension beams structural ridge beams.
A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.
Slight vertical cut on the outside edge of truss bottom chord to make sure uniform nominal span typically 1 4 inch cantilever.
The following diagram shows the terms used for general roof truss members.
The following is a list of terms or phrases commonly used in the roofing industry.
It is a waterproofing layer made of regular felt stacked above the solid.
The following diagram shows the terms applying to gable end roofs.
A condition where both the top and bottom chords extend beyond a support structure with no bearing at the extended end.
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.
The edge of a roof which runs from eaves to ridge at a gable.
Each term is accompanied by a brief definition.
The portion of the roof projecting out from the side walls of the house.
1 part of a pitched roof construction that receives the feet of the spars sp ars and ceiling joist ends.
Some of these can support the roof and prevent ridge sagging and wall spreading.
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The terms pitch and slope are simply two different ways of expressing the same measurement.
Rafter the members making up the main body of the framework of all roofs are called rafters.
A building product which supplements a basic solid panel building such as a door window light transmitting panel roof vent cupola soffit wainscot overhang etc.
A structure designed and constructed to house farm implements hay grain poultry livestock.
Terms for roof truss members.
This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.
Common roofing terms defined explained.
A horizontal member that establishes the lower edge of a truss usually carrying combined tension and bending stresses.
Below are some commonly used terms that identify parts of a roof and types of roofing.
They do for the roof what the joists do for the floor and what the studs.
