Building & DDA Regulations

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 approved Document M, which is based on BS8300:2001. The related details of approved Document M are outlined below, together with the Treads recommendation.

"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. Our method of installation means changing top step insert colours is a formality. The colour variant should be at least 30 points (where black to white is 100 points) on all treads.

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

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

Stair Nosing LRVs

Treads Stair Nosings has Light Reflectance Values (LRVs) available for all its stair nosing inserts.

Order codeStair nosingLRV
1 Oxford Blue 6.56
2 Slate 12.00
3 Airforce Blue 14.38
4 Light Grey 28.57
5 Grey 26.99
6 Black 6.00
7 Brown 6.00
8 Olive 29.53
9 Buff 21.00
10 Mushroom 38.59
11 Claret 11
13 Conker 8.15
14 Orange 28.00
15 Luminous 41.00
16 Yellow 84.00
17 Red 10.39
18 Mist 42.09
19 Ivory 53.27
20 White 86.00
21 Black Scoured 6.00
22 Slate Scoured 10.75
23 Grey Scoured 23.49
24 Blue / Grey Scoured 21.00
25 Indigo Scoured 11.00
26 Navy Scoured 10.00
27 Dark Green Scoured 13.00
28 Brown Scoured 9.00
29 Burgundy Scoured 12.50
31 Clay 50.00
32 Putty 53.98
33 Duck Egg 50.00
34 Sky 52.63
35 Citrene 63.00
36 Blue Grey Scoured 21.00