Definition
The International Residential Code (IRC) is the US model code for one- and two-family dwellings. Section M2302 and AM112/AM113 cover rooftop solar PV installations on residential properties.
Key Takeaways
- IRC governs one- and two-family residential construction in the US.
- References ASCE 7, NEC, and IBC structural provisions.
- Section AM112 covers PV installation requirements.
- State-by-state adoption with local amendments.
- Companion to IBC for commercial.
Frequently Asked Questions
3 commonly searched questions about IRC (International Residential Code).
What is IRC?
International Residential Code — model code for one- and two-family dwellings up to 3 stories. Published by ICC; adopted by most US states with amendments.
How is IRC different from IBC?
IRC = single/two-family residential. IBC = commercial and multi-residential. Same root publisher (ICC), different application scope.
Solar in IRC?
Section AM112 (Photovoltaic Systems). References NEC and IBC structural provisions. Covers roof attachment, walkway, and fire-access requirements.
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