ROCATEX Acrylic Primer is a water based polymer emulsion and is designed to give maximum penetration
into the substrate to enhance surface preparation for bonding when tiling or screeding.
Suitable for interior / exterior use and for porous and non-porous substrates including; concrete, anhydrite
and cement based rendering, existing tiles, asphalt and wooden surfaces such as; chipboard, plywood and
floorboards.

SUBSTRATE PREPARATION
All surfaces must be clean, firm, dry, free from all loose matter including dust, dirt, oil, grease, laitance and
any other contaminants that may affect adhesion.
Preparation of the substrate by mechanical means such as scabbling is recognised as the most effective
way to provide a good key. Where a substrate has been subject to chemical contamination advice as to any
specific precautions must be sought.

APPLICATION
ROCATEX Acrylic Primer should be mixed with water in proportion from 1:1 on absorbent surfaces, or
undiluted on non-porous surfaces and substrates which require a barrier primer such as gypsum plaster.
Particularly absorbent surfaces may require subsequent coats. The primer should be applied with a soft
brush ensuring that all puddles and any ponding is brushed out prior to screeding. The primer should not be
applied to substrates with a temperature of less than 5°C or above 25°C. Ensure that the primer has dried
before next works can commence.
Anhydrite Screeds – The substrate must not leach moisture. Anhydrite screeds must not have a moisture
content greater than 0.5% or 75% relative humidity (RH). This can easily be tested by taking moisture
readings across the whole surface. It is essential that surface laitance is removed in accordance with the
screed manufacturer’s recommendations, followed by vacuum cleaning to remove any loose material, then
apply a diluted coat 1:1 with clean water followed by a neat coat of ROCATEX Acrylic Primer. If porous,
further coat(s) may be required.

FREE NEXT DAY DELIVERY MONDAY TO FRIDAY.

ORDERED BEFORE 11AM.