Installation
What is Tear-Off?
Roofing Glossary · Installation
Definition
The complete removal of existing roofing materials — shingles, underlayment, and sometimes damaged decking — down to the bare roof structure before installing a new roof system. A full tear-off allows inspection and repair of the decking and flashing, ensures the new system performs to specification, and is required by most building codes after two layers of shingles. It adds $1-2 per square foot to project cost.
Related Roofing Terms
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OverlayThe installation of a new layer of roofing material over the existing shingles, also called re-roofi...
→DeckingAlso called sheathing, the decking is the structural boards or panels — typically 7/16" or 1/2" OSB ...
→Square (Roofing)The standard unit of measurement for roofing materials and project pricing equal to 100 square feet ...
→Waste FactorThe additional percentage of roofing material ordered beyond the calculated roof area to account for...
More Installation Terms
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