IRC R609.4.1 - Garage Door Wind Pressure Label Requirements

Every garage door installed in the United States should carry a permanent label showing its wind pressure ratings. IRC R609.4.1 requires that label. It is how inspectors and homeowners verify that a door is rated for the conditions at its location.

What this section says

IRC R609.4.1 requires garage doors to display a permanent label. The ICC article summarizes the content requirement:

"The label must identify the manufacturer, model/series number, positive and negative design wind pressure ratings, installation instruction drawing reference number, and the applicable test standard."

The label must identify:

• The garage door manufacturer
• The garage door model or series number
• The positive design wind pressure rating, in psf (pounds per square foot)
• The negative design wind pressure rating, in psf
• The reference number for the installation instruction drawing
• The test standard used (ASTM E330 or ANSI/DASMA 108)

The label is permanent, meaning it must stay on the door for its service life. Stickers applied to the top section or side stile of the door are the typical format.

The section also requires that garage doors be installed in accordance with the manufacturer's installation instructions. This installation instruction requirement connects the label (which references the instruction drawing number) to the actual installation. An inspector can verify not only the door's rating but also whether the hardware and installation match the tested configuration.

When it applies

R609.4.1 applies to garage doors in dwellings governed by the IRC. The label requirement applies to new doors at installation. It applies in new construction and in replacement installations.

In Colorado, the design wind pressure for a specific site is calculated from the local ultimate design wind speed (Vult) and ASCE 7-22. Denver's 2025 design criteria use Vult = 115 mph, Exposure C. The calculated design pressure for a typical residential garage door at this wind speed typically falls in the range of 18 to 25 psf, depending on building height, exposure, and door size.

The label must show a rated pressure that meets or exceeds the site's calculated design pressure. This is what permit inspectors verify.

What this means for you

Find your label now. The label is usually on the top panel or the top section of the door, inside the garage. It may also be on a stile (the vertical edge rail). If the label is missing, the door may not have been rated or the label has been painted over or removed.

Positive and negative ratings both matter. Wind pushes on the door (positive pressure) but also pulls it outward (negative pressure, or suction). Both ratings must exceed the site's design requirements.

The label is the compliance record. During a permit inspection, the inspector reads the label. A door with a label showing 20 psf positive and 23 psf negative, installed at a site requiring 18 psf design pressure, passes. A door with no label fails.

Installation must match the tested configuration. The hardware on the door must match what was in place when the door was tested. Substituting lighter hinges or a different horizontal track system can invalidate the rating.

G Brothers provides documentation of the door model, pressure rating, and installation drawing for every permitted door replacement.

Full text and source

Read IRC R609.4.1 at https://up.codes/s/garage-door-labeling. DASMA TDS #1502 explains how the IRC wind load label requirement applies in practice and is available at dasma.com.

IRC R609.4.1 applies to garage doors in residential construction. The label requirement is a manufacturing and installation requirement; the design pressure requirement for a specific site must be calculated using ASCE 7 and local design values.

Want to put numbers to this? Use the interactive wind load psf / mph converter below, or open the full wind load psf / mph converter with examples and notes.