CORROCOAT
Corrocoat Floor Screed
Product reference: 3/24
Product title: Corrocoat Floor Screed
Valid from: 10th January2010
Last reviewed: May 2019
Type
A 2-pack high viscosity, pre-accelerated, unsaturated ester flooring resin,
used in conjunction with the specified aggregate.
Suggested use
For screeding uneven floors, filling pits, gouges etc, usually
before the application of a corrosion resistant surface layer
such as Polyglass or Polyglass VE.
Health & safety
Before handling or using this product, the material safety
data sheet should be read and all precautions observed.
Surface preparation
The concrete surface should be primed in accordance
with Corrocoat Data Sheet SP5. Application of Corrocoat
Floor Screed directly onto masonry and concrete is not
recommended: the coating will not wet-out or penetrate
sufficiently to obtain sufficient adhesion.
Application equipment
Float, trowel or brush.
Mixing procedure
Weigh out only the proportion of material that can be used
during the pot life and place in a suitable container. Add the
correct weight of P2 catalyst and mix thoroughly. Add the
correct weight of screening sand and mix thoroughly.
It is of paramount importance that the material is
completely homogeneous prior to application.
NOTE: For screeding layers in excess of 3mm it is essential
that the resin to sand/aggregate ratio is not excessive. The
particles should be thoroughly wetted but not immersed in
resin. Excessive amounts of resin will generate heat, which
will cause cracking of the screed duringcure.
Where it is necessary to build in excess of 20mm, this should
be done by multiple applications.
Mixing ratio
Corrocoat Floor Screed may be catalysed with P2 only at
a ratio of 100 parts base: 2 parts catalyst. These ratios are
based on the actual content of resin, i.e. the weight of resin
without the added sand/aggregate.
Application
Corrocoat Floor Screed should first be catalysed using
Corrocoat Catalyst P2. Corrocoat Floor Screed should then
be mixed with 3 parts screened sand. (The screened sand or
aggregate may be of conventional silica type, quartz, or other
suitable material.) It must be kiln dried, of particle size (0.5-
0.8mm) and be free of fine particles. It may then be applied
over the primer layer to a DFT of between 3 and 20mm
depending on the requirement. The surface may be lightly
brushed with styrene containing 2% P2 in order to obtain a
flat surface.
Thinners
DO NOT THIN. THE ADDITION OF STYRENE MAY
SUBSTANTIALLYAFFECT THE PROPERTIES OF THIS
PRODUCT.
Pot life
65-75 Minutes at 68°F (20°C). The pot life will be shorter at
high temperatures and longer at low temperatures. Where
high temperatures are encountered it is recommended that
where possible the material is refrigerated prior to use.
Equipment cleaner
Use Styrene, Acetone or Methyl Ethyl Ketone.