- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 05 Oct 2020
Approved Document K - Protection from falling, collision and impact defines the ‘nosing’ of stairs as ‘the leading edge of a stair tread’.
[Image: The elements of stairs]
For buildings other than dwellings, step nosings should be made visually apparent by using a contrasting material on both the tread and the riser a minimum of 55 mm wide. If possible, step nosings that protrude over the tread below should be avoided. If the nosing does protrude, it should be by no more than 25 mm
[Image: Examples of suitable tread profiles]
For common access areas in buildings that contain flats step nosings should be visually apparent, using a material that contrasts visually, 50 - 65 mm wide on the tread and 30 - 55 mm on the riser. A suitable tread nosing profile, should be used.
Approved document M, Volume 1: Dwellings (2015 edition incorporating 2016 amendments), defines a ‘suitable tread nosing’as; ‘Nosings that conform with one of the options shown in diagram 1.2 of approved document K’
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
The role of HVAC systems in the safe return to work.
CLC provides guidance related to product marks, post-Brexit.
Net zero goals incorporated into plans for a new European Bauhaus.
BREEAM offers its resilient approach to Building Back Better.
Country moves one step closer to creating independent body.
BSRIA examines factors driving the industry.
Ensuring designs are developed, validated and can be effectively implemented.
The Homebuyer Survey most suitable for newer homes or simple properties.
Health and safety practices for body and mind.
28 leading bodies set out their vision for the future.
Chancellor announces latest Winter Support packages.
Tapping technology to boost infrastructure and create jobs.
4 ways to ensure certificates are valid.
White elephant construction projects.