The following is a compilation of facts
regarding slip-resistance of floor finishes:
The slip resistance of floor finishes (coefficient
of friction) is measured on an apparatus known as
a James Machine. The results of the James Machine,
when compared to actual floor condition, becomes somewhat
nebulous, but it still remains the best test available.
The readings measure the static coefficient of friction
(slip resistance) and give a numerical rating of 0.1
to 1.0 with 0.5 being the figure set as the limit
of safety. Readings higher than .5 are progressively
less slippery and hence safer. Numbers progressively
lower than 0.5 are more slippery and considered unsafe.
A newer generation slip resistance apparatus is the
Topaka unit which measures dynamic coefficient of
friction (slip resistance).
An unfinished or unwaxed floor is very often faster
(more slippery) than a finished or waxed floor. In
most cases the application of finish or wax actually
controls slip.
Conventional spray buffing is a major factor affecting
slip-resistance. Spray buffing hardens the finish
and thus speeds up the floor. There is a definite
correlation between hardness and slip. Conventional
spray buff (a mix of finish, water and cleaner) lowers
the coefficient of slip by about 0.025 points thus
speeding up the slip on the floor. Today’s modern
spray buff and mop on dressing compounds such as Flashback
will control the slip on a floor. After using Flashback
Spray Buff or Mop on Restorer on a finished floor,
the slip index will usually read 0.05 – 0.075 higher
on the James scale; slowing down the floor (making
less slippery). Spray buffing is a valid and economical
method of floor maintenance and is here to stay, but
the proper choice of chemical compounds is important
in relation to safety.
Water spillage on floors creates an extremely hazardous
condition. Water acts as a lubricant between the floor
substrate and the bottom of the shoe. Spilled water,
condensation, food and drink should be cleaned up
immediately. Good quality walk off mats should be
placed at entranceways to prevent rain and snow from
being brought in by foot traffic.
Residual mop treatment film or residue from furniture
polish, metal cleaner and lubricating sprays will
greatly increase the slip on the floor surface. Avoid
oversprays onto floor. Clean up residues promptly
using a good heavy duty cleaner-degreaser.
Dust created by burnishing or dirty floors will cause
a floor to become more slippery. Sweep or damp mop
floors on a regular basis. |
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