• Codes
  • Features
  • Pricing
  • Sign Up
  • Log in
Log in
Sign Up
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Contact
  • Terms
  • Privacy
// CODE SNIPPET

R806.2 Minimum Vent Area

Residential Code 2015 of Utah > 8 Roof-Ceiling Construction > R806 Roof Ventilation > R806.2 Minimum Vent Area
JUMP TO FULL CODE CHAPTER
The minimum net free ventilating area shall be 1/150 of the area of the vented space.

Exception: The minimum net free ventilation area shall be 1/300 of the vented space provided one or more of the following conditions are met:

1. In Climate Zones 6, 7 and 8, a Class I or II vapor retarder is installed on the warm-in-winter side of the ceiling.

2. Not less than 40 percent and not more than 50 percent of the required ventilating area is provided by ventilators located in the upper portion of the attic or rafter space. Upper ventilators shall be located not more than 3 feet (914 mm) below the ridge or highest point of the space, measured vertically, with the balance of the required ventilation provided by eave or cornice vents. Where the location of wall or roof framing members conflicts with the installation of upper ventilators, installation more than 3 feet (914 mm) below the ridge or highest point of the space shall be permitted.
Share URL

Copy and paste the link below into emails, chats or browsers.

Copy

You can also copy or bookmark the link from your browser's address bar.

Related Code Sections


R806.2 Roof-Ceiling Construction, Minimum Vent Area
The minimum net free ventilating area shall be 1 / 150 of the area of the vented space. Exception: The minimum net free ventilation area shall ...
Residential Code 2015 of Utah > 8 Roof-Ceiling Construction > R806 Roof Ventilation > R806.2 Minimum Vent Area
504.1 Chimneys and Vents, Definitions
The following definitions apply to the tables in this section. APPLIANCE CATEGORIZED VENT DIAMETER/AREA . The minimum vent area/diameter ...
Fuel Gas Code 2018 of Utah > 5 Chimneys and Vents > 504 (IFGS) Sizing of Category I Appliance Venting Systems > 504.1 Definitions
504.1 Chimneys and Vents, Definitions
The following definitions apply to the tables in this section. APPLIANCE CATEGORIZED VENT DIAMETER/ AREA. The minimum vent area/diameter ...
Fuel Gas Code 2015 of Utah > 5 Chimneys and Vents > 504 (IFGS) Sizing of Category I Appliance Venting Systems > 504.1 Definitions
G2428.1 Fuel Gas, (504.1) Definitions
The following definitions apply to the tables in this section. APPLIANCE CATEGORIZED VENT DIAMETER/AREA. The minimum vent area/diameter ...
Residential Code 2015 of Utah > 24 Fuel Gas > G2428 (504) Sizing of Category I Appliance Venting Systems > G2428.1 (504.1) Definitions
R702.7.3 Wall Covering, Minimum Clear Airspaces and Vented Openings for Vented Cladding
For the purposes of this section, vented cladding shall include the following minimum clear airspaces. Other openings with the equivalent vent area ...
Residential Code 2015 of Utah > 7 Wall Covering > R702 INTERIOR COVERING > R702.7 Vapor Retarders > R702.7.3 Minimum Clear Airspaces and Vented Openings for Vented Cladding
About UpCodes

UpCodes provides an intuitive resource to navigate building regulations.

Codes are organized by jurisdiction to help you understand which regulations apply to your project.


Find Your Codes
COMPANY INFO About Free Law Contact Careers Terms Privacy Press Kit
CATEGORY General New York City New York State California Codes Building Codes Online
PREMIUM Features Pricing Sign Up Log In
CODES IBC 2015 IRC 2015 IPC 2015 California Building Code 2016 Popular Sections

FOLLOW US