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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The
Janitech Companies
106 High Street
Cumberland, RI 02864
(Tel) 401-724-4300, (Fax) 401-724-4900 |
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