Is railing height 36 or 42?

Edited by: View Mate All Glass Railing

36 inches and 42 inches are both standard handrail heights, but they are suitable for different situations. The correct height for your project depends entirely on the relevant building codes.

Two Standards

36 inches (approximately 91.5 cm): This is the standard height for residential stair handrails as specified by the International Residential Code (IRC). It is measured vertically from the front edge of the stair tread (the front edge of the step) to the top of the handrail.

42 inches (approximately 107 cm): This is the standard railing (or balustrade) height for commercial buildings, public staircases, and landings as specified by the International Building Code (IBC). It also applies to railings on the open side of residential landings 30 inches or more above the ground.

Key Differences: Handrails vs. Railings

Understanding the following differences is crucial:

Handrails provide grip and support when going up and down stairs. Their primary function is to offer a grip.

Railings are a protective barrier used to prevent falls from heights such as landings, balconies, or stair platforms. Their primary function is to act as a wall.

On the open side of a residential staircase, the top handrail typically serves as both a handrail (34 - 38 inches high for gripping) and a barrier (at least 36 inches high for safety protection). Therefore, 36 inches is a common standard height for residential staircases.

 Key Steps

Determine the specific requirements of the project:

- Determine the project type: Is it an indoor residential staircase, a residential landing, or a commercial/public space?

- Consult your local building authority: Local regulations may modify general standards. This is the most important step, especially for projects requiring permits.

- Measure correctly: Always measure the height vertically from the leading edge of the stair tread or the finished surface of the landing/stairwell.

In short, for typical indoor residential staircases, the handrail height is 36 inches. For commercial buildings or residential terrace railings, the standard height is 42 inches. Always confirm the final legal requirements with your local building authority.

If you would like to learn more, please contact me： Edited by: View Mate All Glass Railing