|
Korax Technologies Solves the EIFS Rainscreen Problem
The Problem
Typically, EIFS is applied on sheathing as a face-sealed, soft coat finish
and when it works all incident rain-water is prevented from penetrating
into the wall assemblage. However, when there are imperfections
or defects in the EIFS water is able to penetrate the surface
and, since traditional EIFS systems possess little ability for
storing the moisture, the relative humidity quickly reaches saturation
which can then penetrate into the wall system causing damage.
In any case, defects eventually develop at door and window openings,
leading to trapped moisture, deformation of the main structural
elements deflection of beams, and thermal moments.
Others Have Tried
Attempts have been made at developing a true rain screen panel for EIFS
systems but they were not able to provide baffles that separated
regions of different time-averaged exterior pressures from each
other nor could they create a cavity that could react to rapid
changes in exterior pressures. Furthermore, they possess the
following disadvantages:
- The air-barrier is trowelled on making it subject to thickness
variations and requires the use of emulsified polymers that
do not withstand long-term exposure to moisture.
- The ventilation channels are too small for adequate drying and
moisture can still enter through gravity flow and cross channels
prevents ventilation. Furthermore, ventilation at the location
of the air-vapour barrier as recommended by some of the existing
system is totally inappropriate and ineffective.
Korax Technologies Succeeds
The Stucco RainScreen Panel™ System effectively overcomes all
of these limitations making it the true rainscreen panel for
EIFS and conventional stucco applications.
Other Applications
The Stucco RainScreen Panel™ System is not limited to EIFS
and conventional stucco. The design allows for a great deal of
versatility in its use. Whether it’s rubble masonry veneer,
stucco on wood frame, as subgrade drainage, the panel gets the
job done.
|
