Two new British Standards have been introduced in the last
12 months that flooring contractors need to understand if they are to install
fit for purpose stair edgings that help to create safe, accessible and
inclusive environments.
BS8493:2008
Published in November 2008, BS8493 introduced a standardised
method of measurement for Light Reflectance Values (LRVs). LRVs indicate the
amount of light reflected by a surface and are ranked on a scale of 0 to 100,
with 0 being a totally absorbing surface (the perfect black) and 100 being
totally reflective (the perfect white).
These values are used to achieve visual contrast between
adjacent surfaces such as stair edgings and floorcoverings, which can aid
building access, particularly for visually impaired people. This helps to create
an inclusive environment and enables building owners to meet their duties under
the Disability Discrimination Act (DDA).
In order to achieve a sufficient and useful level of
contrast between adjacent surfaces, Building Regulations recommend that there is
at least a 30 points difference between the surfaces’ LRVs.
Previously, two different methods were used for measuring
LRVs, which led to confusion and difficulties when contractors attempted to
deliver 30 points difference – it was not always possible to compare like
with like.
BS8493 addressed this problem and introduced a single method
of measurement, plus a mandatory requirement for manufacturers to supply LRV
test reports for each individual colour within each product range, to provide
contractors with evidence that the LRV has been measured using the new approved
method.
If contractors want to be confident about delivering visual
contrast, then they need to request LRV test reports from stair edging
manufacturers. The stair edging then needs to be paired with a floorcovering
that has an LRV of either 30 points less or more. To make this pairing process
simpler, Gradus has developed a range of specification advice sheets, detailing
suggested combinations of Gradus stair edgings and carpets that will achieve
the minimum 30 points difference.
BS8300:2009
Introduced in June, BS8300:2009, which supersedes
BS8300:2001, provides updated guidance on how buildings can meet the needs of
disabled people and includes new recommendations for the slip-resistance,
colour contrast and profile dimensions of stair edgings.
The standard recommends that stair edgings should
incorporate a permanent slip-resistant material, as close to the front edge as
possible, in a single solid band of colour across the full width of the stair
that contrasts visually with the remainder of the step to assist blind or
partially sighted people. BS8300:2009 recommends using stair edgings that have
been measured in line with BS8493.
The standard also suggests that stair edgings should wrap
around the riser and measure 50mm to 65mm on the tread and 30mm to 55mm on the
riser. This ensures optimum underfoot contact, particularly with the
slip-resistant element.
Gradus’ XT range of stair edgings satisfies these
requirements, thanks to its slip-resistant pvc inserts that extend around the
leading edge of the step and are available in a choice of colours, each
carrying an LRV test report.
For even greater slip-resistance, Gradus also supplies
Xtra-grip and Xtra-grip Plus inserts for use with the XT range, which
incorporate mineral aggregate for increased surface roughness that aids
slip-resistance in both dry and wet interior conditions.
Peace of mind
By installing stair edgings that meet the requirements of
both new standards, contractors can be reassured that the edgings will provide
visual contrast and help to improve the accessibility of a building. This in
turn, provides clients and building owners or occupiers with peace of mind that
their environment is safe and inclusive. With contractors coming under greater
pressure to take on the role of specifier during the economic downturn,
understanding the new standards can mean greater peace of mind all round.
Contact Gradus on 01625 428922 or visit
www.graduspeaceofmind.com.
