What is the minimum height of guardrails for decks and porches according to the IRC?

The minimum height for guardrails on decks and porches, as specified by the International Residential Code (IRC), is 36 inches. This height requirement is in place to ensure safety and help prevent accidental falls from elevated surfaces.

The guardrail serves as a physical barrier and needs to be tall enough to effectively protect individuals using the deck or porch. At 36 inches, it provides an adequate height for most adults, allowing for safe use while minimizing the risk of overreaching or leaning too far over the edge. This standard is crucial for residential construction, particularly for elevated structures that pose a higher risk of falls.

The guardrail's height is part of a broader set of guidelines in the IRC that address safety and structural integrity in residential building, ensuring that homes provide a secure environment for occupants.