Light Reflectance Values (LRVs)

The legal duty for access to a building and its facilities is the responsibility of the owners.

The guidance is provided in approved documents such as Document M, which is based on BS8300. The related details of Document M are outlined below, together with the stair nosing recommendation.

Associated Imagery

"People with impaired sight risk tripping or losing their balance if there is no warning that steps provide a change in level. The risk is most hazardous at the head of a flight of steps when a person is descending."

The change in level can be clearly highlighted with a nosing that contrasts with the surrounding tread and riser materials. The colour variant should be at least 30 points (where black to white is 100 points) on all treads.

"All stair nosings are made apparent by means of a permanently contrasting material 55mm wide on both the tread and riser."

The 55mm measurements are only guidance. Other considerations such as step size and type, should be taken when choosing a nosing.