What is a riser? The dimension that decides stair comfort

The riser is the vertical face of a step. It sets the height of each step and plays a decisive part in how comfortable, safe and elegant a staircase feels.

Why it matters

• Safety: a correctly calculated riser reduces the risk of tripping and falling.
• Comfort: balanced dimensions make going up and down markedly less tiring.
• Visual coherence: the riser finish ties the stair into the design of the room.

Standard dimensions

• Ideal riser height: 15 – 17 cm
• Ideal tread depth: 28 – 30 cm
• Comfort formula: 2 × riser + tread = 60 – 64 cm
• Maximum riser height: 18 cm (recommended limit)
• Minimum tread depth: 25 cm

Values vary with building type and use; public buildings and escape stairs are held to stricter limits.

Riser finishes

• Timber: warm and natural, the usual choice indoors.
• Marble or natural stone: a prestige look, durable and long lived.
• Ceramic or porcelain: easy to clean, resistant to water and wear.
• Paint: the economical solution, adaptable through colour.
• Microcement: modern and minimal, giving a smooth seamless surface.

What good riser design gives you

• A more comfortable stair.
• Safer use.
• Less fatigue on long flights.
• Aesthetic value for the space.

Points to watch

• Riser heights must be equal on every step — even 5 mm of variation causes stumbling.
• Excessively tall risers are tiring and dangerous.
• The finish must be slip resistant and hard wearing.
• Stair width and balustrade height must meet the standards.