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PERM RATE IS IMPORTANT WHEN
SELECTING AN EXTERIOR COATING!
Basically, a perm rate is the amount
of seconds it takes moisture to pass
through a square meter of membrane
material which gives you a permeability
rating. Liquid Ceramic®
Exterior Wall Coating is highly resistant
to water penetration, yet it allows vapor
to escape at an astounding rate of
20 perms!
The diagram above demonstrates the
size relationship of water as a liquid
(the basketball) and water as a vapor (the
grape) in a direct ratio of 1600:1 (water
in vapor form : water in liquid form).
The openings in the mesh represent the
micro-pore structure of the Liquid Ceramic®
Exterior Wall Coating membrane. The pores
are so fine that they do not let water
pass through, yet they allow vapor to
easily migrate through the coating. Water
under your coating is Enemy #1. Mixed
with heat penetration the next day, cool
temperatures at night, trapped water,
etc., it all adds up to disaster when
moisture has no place to go. Liquid
Ceramic® breathes and allows
water vapor to be released. The high perm
rate also allows for the reduction of
instances of mold, mildew and fungi that
may develop with products that cannot
breathe. |
