Adopts With Amendments
Chapter 15
Roof Assemblies and Rooftop Structures
International Residential Code 2021
[F] 1501.1 Exhaust Systems Scope
Section 1501.1 — Exhaust Systems Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 1501.1.1 Scope of Exhaust Systems
Section 1501.1.1 — Scope of Exhaust Systems. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 1501.2 Exhaust Discharge
Section 1501.2 — Exhaust Discharge. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1501.2.1 Exhaust Systems Scope
Section 1501.2.1 — Exhaust Systems Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 1502.1 Recirculation of Air
Section 1502.1 — Recirculation of Air. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1502.1.1 Required Exhaust Rates
Section 1502.1.1 — Required Exhaust Rates. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1502.2 Recirculation Prohibited
Section 1502.2 — Recirculation Prohibited. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1502.2.1 Bathroom Exhaust
Section 1502.2.1 — Bathroom Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1502.4 Dryer Exhaust
Section 1502.4 — Dryer Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1503.1 Range Hood Exhaust
Section 1503.1 — Range Hood Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1503.1.1 Clothes Dryer Exhaust
Section 1503.1.1 — Clothes Dryer Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1503.2 Kitchen Exhaust Rates
Section 1503.2 — Kitchen Exhaust Rates. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1503.2.1 Dryer Exhaust Duct Length
Section 1503.2.1 — Dryer Exhaust Duct Length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1503.3 Domestic Kitchen Exhaust Makeup Air
Section 1503.3 — Domestic Kitchen Exhaust Makeup Air. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1504.1 Clothes Dryer Exhaust General
Section 1504.1 — Clothes Dryer Exhaust General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1504.2 Dryer Exhaust Duct Material
Section 1504.2 — Dryer Exhaust Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1504.3 Dryer Exhaust Duct Material
Section 1504.3 — Dryer Exhaust Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1504.4 Dryer Exhaust Duct Size
Section 1504.4 — Dryer Exhaust Duct Size. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1505.1 Whole-House Ventilation
Section 1505.1 — Whole-House Ventilation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1505.2 Ventilation System Types
Section 1505.2 — Ventilation System Types. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1505.3 Outdoor Air Intake Location
Section 1505.3 — Outdoor Air Intake Location. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 1506.1 Exhaust Termination
Section 1506.1 — Exhaust Termination. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1501.1 Scope - Exhaust Systems
Section M1501.1 — Scope - Exhaust Systems. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] M1501.1.1 Outdoor Discharge Required
Section M1501.1.1 — Outdoor Discharge Required. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1501.2 Exhaust General
Section M1501.2 — Exhaust General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1501.3 Exhaust Termination
Section M1501.3 — Exhaust Termination. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1501.4 Dryer Duct Length
Section M1501.4 — Dryer Duct Length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1502.1 Clothes Dryer Exhaust IRC
Section M1502.1 — Clothes Dryer Exhaust IRC. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1502.2 Dryer Duct Termination
Section M1502.2 — Dryer Duct Termination. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1502.3 Dryer Exhaust Duct Size
Section M1502.3 — Dryer Exhaust Duct Size. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1502.4 Dryer duct length
Section M1502.4 — Dryer duct length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1502.4.1 Dryer Exhaust - Specified Length
Section M1502.4.1 — Dryer Exhaust - Specified Length. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1502.5 Dryer Duct Material
Section M1502.5 — Dryer Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1503.1 Bathroom Exhaust
Section M1503.1 — Bathroom Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1503.2 Range Hood Duct Size
Section M1503.2 — Range Hood Duct Size. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1503.3 Kitchen Range Hood Size
Section M1503.3 — Kitchen Range Hood Size. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1503.4 Makeup Air for Range Hoods
Section M1503.4 — Makeup Air for Range Hoods. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1504.1 Bathroom exhaust
Section M1504.1 — Bathroom exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1504.2 Bathroom Fan Efficacy
Section M1504.2 — Bathroom Fan Efficacy. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1505.1 General - Whole-House Mechanical Ventilation
Section M1505.1 — General - Whole-House Mechanical Ventilation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1505.2 System Design
Section M1505.2 — System Design. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1505.4 Whole-House Ventilation Rate
Section M1505.4 — Whole-House Ventilation Rate. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1601 General — Duct Systems
Section M1601 — General — Duct Systems. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1601.1 Duct design
Section M1601.1 — Duct design. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1601.1.1 Duct Insulation
Section M1601.1.1 — Duct Insulation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1601.2 Return Air Sources
Section M1601.2 — Return Air Sources. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1601.3 Duct Insulation
Section M1601.3 — Duct Insulation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1601.4 Duct Installation
Section M1601.4 — Duct Installation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1602.1 Return Air - General
Section M1602.1 — Return Air - General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] M1602.2 Prohibited Return Air Sources
Section M1602.2 — Prohibited Return Air Sources. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1501.1 Scope Exhaust Systems
Section R1501.1 — Scope Exhaust Systems. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] R1501.1.1 Exhaust System Types
Section R1501.1.1 — Exhaust System Types. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1501.2 Exhaust Discharge Location
Section R1501.2 — Exhaust Discharge Location. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1501.3 Exhaust Duct Materials
Section R1501.3 — Exhaust Duct Materials. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1502.1 Clothes Dryer Exhaust
Section R1502.1 — Clothes Dryer Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1502.2 Dryer Duct Length
Section R1502.2 — Dryer Duct Length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1502.3 Dryer Duct Material
Section R1502.3 — Dryer Duct Material. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1502.4 Dryer Duct Termination
Section R1502.4 — Dryer Duct Termination. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1502.4.2 Dryer Duct Length Reduction
Section R1502.4.2 — Dryer Duct Length Reduction. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1503.1 Dryer Exhaust General
Section R1503.1 — Dryer Exhaust General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1503.2 Dryer Exhaust Duct Length
Section R1503.2 — Dryer Exhaust Duct Length. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1503.3 Range Hood Material
Section R1503.3 — Range Hood Material. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] R1504.1 Bathroom Exhaust
Section R1504.1 — Bathroom Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1504.2 Bathroom Fan Termination
Section R1504.2 — Bathroom Fan Termination. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R1505.1 Bathroom Exhaust
Section R1505.1 — Bathroom Exhaust. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
Code sections are sourced from the International Code Council (ICC) and NFPA. Refer to ICC Digital Codes or NFPA for the authoritative source documents.