The Building Regulations Approved Document K2018-07-26T15:23:44+00:00

The Building Regulations 2010 – Approved Document K

(2013 edition)

Extracts from the Building Regulations

Protection from falling, collision and impact

This approved document takes effect on 6th April 2013 for use in England. Current building standards should be checked at time of specification for Wales, Scotland and Northern Ireland.

Approved documents are intended to provide guidance. The main points relating to stairs that are detailed in Approved Document K are shown below with supporting recommendations by Gradus shown in blue text.

K1 Stairs and ladders

Construction of steps

For buildings other than dwellings

1-7
For steps apply the following guidance.
a. Make step nosings apparent: use material that will contrast visually, a minimum of 55mm wide, on both the tread and the riser.

For common access areas in buildings that contain flats

1-10
Provide a stair with steps that comply with the following guidance.
a. Make step nosings apparent: use material that will contrast visually, 50mm to 65mm wide on the tread and 30mm to 55mm on the riser.

All Gradus stair edging colours have been measured to provide Light Reflectance Values (LRVs)* in order to provide the specifier with information to ensure that suitable contrast is achieved with the surrounding stair material. PVC-u Hardnose stair nosing can provide an ideal solution as the channel and insert colours can be matched to contrast with the tread and riser.

*These values have been determined using the CIE Y value in accordance with BS 8493:2008+A1:2010.

The profile dimensions stated are guidance only and other factors should be taken into consideration when specifying stair edging such as step dimension and type and frequency of traffic. However, a large proportion of Gradus stair edging fall within the dimensions stated, including the XT range.

Source: Building Regulations – Protection from falling, collision, and impact – Approved Document K – 2013 Edition
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