Roof Anatomy
What is Sheathing?
Roofing Glossary · Roof Anatomy
Definition
A synonym for roof decking — the layer of structural panels (OSB or plywood) attached to the roof framing members. Some professionals use "sheathing" specifically for the structural layer and "decking" for any flat roof base, but in residential roofing the terms are interchangeable. Proper sheathing thickness and fastening schedules are typically specified by local building codes.
Related Roofing Terms
→
DeckingAlso called sheathing, the decking is the structural boards or panels — typically 7/16" or 1/2" OSB ...
→RafterOne of a series of sloped structural members that extend from the ridge board at the peak to the wal...
→TrussA prefabricated triangular structural framework of wood members used to support the roof deck and tr...
→UnderlaymentA water-resistant or waterproof barrier material installed directly over the roof decking and beneat...
More Roof Anatomy Terms
Get an Instant Roof Estimate
Now that you know what sheathing means, put that knowledge to work. Enter your address to get a free satellite-based estimate and compare standardized quotes from pre-vetted local contractors.
Get My Free Estimate