Roof Anatomy
What is Truss?
Roofing Glossary · Roof Anatomy
Definition
A prefabricated triangular structural framework of wood members used to support the roof deck and transfer loads to the exterior walls. Trusses are engineered for specific spans and loads, manufactured off-site, and crane-lifted into place during framing. They are more economical than stick-framed rafters for simple roof shapes but limit attic usable space due to the internal web members.
Related Roofing Terms
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RafterOne of a series of sloped structural members that extend from the ridge board at the peak to the wal...
→DeckingAlso called sheathing, the decking is the structural boards or panels — typically 7/16" or 1/2" OSB ...
→SheathingA synonym for roof decking — the layer of structural panels (OSB or plywood) attached to the roof fr...
More Roof Anatomy Terms
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