AS1428 Stair Nosing Standards
The AS1428 Stair Nosing Standards are:
The difference between the old AS1428 stair nosing standards and the new one is that the new one states it has to be a “solid band of colour-luminance contrast”
A luminescence contrast strip is recommended, to provide luminance contrast and also provide slip-resistance. Luminance contrast is seen when two adjacent areas differ in the intensity of light reflected or emitted from them.
Luminance contrast is preferred to colour contrast as it highlights the difference in the light/dark qualities of two adjoining surfaces rather than just their colours. This means that it offers light /dark differences that can be picked up easier by people who are vision impaired.
The interpretation of most manufacturers is that this now means 50-75mm of one colour. The issue with the old striped nosing is that the “aluminium” is washed out and therefore does not meet the minimum 50mm contrast requirements.
A 10mm MAXIMUM FACE ON A STAIR NOSING! THIS POINT IS A HUGE BONE OF CONTENTION IN THE INDUSTRY.
The most important factors with the AS1428 Stair Nosing Standards are;
- A solid band of colour is required 50-75mm in depth across the tread with a 30% contrast required.
- The contrasting strip shall be no more than 15mm back from the tread.
- The luminance contrast turn down/riser at the front face of the stair nosing is to be no longer than 10mm. For example if the contrast insert on the tread insert is grey then the grey luminance contrast cannot extend beyond 10 mm down the face of the riser.This is to prevent the visually impaired from being confused as to where the leading edge of the step is.