IRC Egress Rules Do Not Include Sidewalks - Sizing Pads for Exterior Doors
When planning a new exterior doorway or evaluating an existing one, one of the most common questions homeowners and builders face is regarding the required size of the exterior landing pad. Ensuring you have a properly sized egress path is critical for safety and code compliance. While the rules might seem complex, breaking down the standard residential codes makes the process much clearer.
STANDARD IRC REQUIREMENTS FOR DOOR LANDINGS Based on the International Residential Code (IRC), the general guideline for an exterior egress is a concrete pad that projects 36 inches outward from the doorway. The width of this pad must be at least the width of the doorway itself. However, it is important to note that some local building codes may require a slightly larger projecting pad measuring 44 inches long. Always plan for at least a 36-inch projection, but verify if your area requires the extended 44-inch landing before pouring concrete.
RULES FOR SLIDING GLASS DOORS If you are installing a sliding glass door, the landing requirements are slightly different. You are not required to pour a concrete pad that spans the entire width of the sliding door unit. The building code only dictates that the landing must cover the operable, or opening, section of the door. This can save time and materials while still remaining fully compliant with safety standards.
LOCAL CODES AND ADA EXCEPTIONS While the IRC provides an excellent baseline, your local building department's codes will always take precedence over international or national guidelines. It is vital to check with your local municipality before you begin. Additionally, these standard residential rules do not apply if the property is subject to the Americans with Disabilities Act (ADA). ADA compliance introduces drastically different requirements for slope, width, and accessibility, which must be strictly followed if applicable to your project.
CONCLUSION Properly sizing your exterior door landing does not have to be a guessing game. By starting with the IRC's 36-inch baseline, adjusting for sliding doors, and confirming with your local building authority, you can ensure a safe, code-compliant exterior egress.
THREE KEY TIPS
CHECK LOCAL CODES FIRST: Always consult your local building department before starting your project, as their specific regulations will override the standard International Residential Code.
MEASURE ONLY THE OPERABLE DOOR: If you are working with a sliding glass door, save concrete by only sizing the width of your landing pad to match the section of the door that actually opens.
WATCH OUT FOR ADA COMPLIANCE: Determine immediately if your project needs to be wheelchair accessible. ADA guidelines require completely different dimensions and grading than standard residential egress codes.
