Business & Contracts
What is Building Code?
Roofing Glossary · Business & Contracts
Definition
The minimum legal standards governing construction methods, materials, and installations in a given jurisdiction, typically based on the International Residential Code (IRC) with state and local amendments. For roofing, building codes specify minimum wind resistance requirements, number of permissible shingle layers, underlayment requirements, ventilation ratios, and flashing standards. Code requirements vary significantly by state and municipality.
Related Roofing Terms
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PermitAn official government authorization required by most municipalities before a roofing replacement or...
→Wind ZoneA geographic classification system that defines the design wind speeds for which structures in an ar...
→Fire RatingA classification system (Class A, B, or C) rating a roofing material's resistance to fire spread. Cl...
→OverlayThe installation of a new layer of roofing material over the existing shingles, also called re-roofi...
→Fastener PatternThe specified number, type, and placement of nails or staples used to secure roofing materials to th...
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