Description
TECHNICAL DATASHEET
SCREED PRIMER
Versatile Primer for Self-Levelling Screeds and Plasters
SCREED PRIMER is a milky white liquid additive for improving the adhesion of screeds and plasters to substrates, as well as sealing pores and providing added waterproofing capabilities. Contains a specialized acrylic emulsion polymer that is highly water resistant while imparting flexibility and outstanding adhesion properties to the mix.
TYPICAL APPLICATION
When applied by brush or spray to surfaces of face brickwork, natural stonework, concrete, paint and asbestos sheeting, it penetrates deeply beneath the surface to line the pores with a thin acrylic coating.
ADVANTAGES
• Deep penetrating into substrates
• Prevents pinholes in screeds
• Economical
• Easy to apply
• High flexibility
• Excellent adhesion to concrete
WATCH POINTS
• Take up excess product on the floor – do not allow to pool
• Only apply over the primer once the white colour is no longer visible on drying and feels tacky
• Do not allow the primer to dry completely to a hard film as this will act as a bond breaker
DIRECTIONS FOR USE
Surface Preparation:
The surface to be treated should be dry and free of loose matter, moss, algae growth and curing compounds. Cracks and holes need to be attended to before priming. Efflorescence should be removed from the surface by brushing. For maximum penetration smooth dense surfaces should be prepared by grit blasting, water blasting or by other mechanical means.
Priming:
Apply directly to concrete surfaces using a PVA roller or spray application and allow to draw in. If the substrate is very porous, another application maybe required. Ensure all areas are thoroughly wet with the primer and take up any product that pools on the surface and does not draw into the substrate.
Application:
Once the SCREED PRIMER has lost its white colour but is still wet, overlay with cementitious screed applications. Do not allow the primer to dry out and become dry to touch as this may act as a bond breaker to the screed application.
TYPICAL PROPERTIES
Density 1.0g/cm3
Mixing Ratio Do not dilute
Appearance White liquid
Time to Overlay When tacky
Application Temp. 5 - 35°C
Colour on Drying Clear
Coverage 8m2/litre on dilution
Equipment Care
Clean all equipment immediately after use with water.
Warranty
Masonry Cement Composites (PTY) Ltd products have a manufacturing defect free warranty. Products, when applied as stipulated in this technical datasheet, will perform as specified without manufacturing defect.
REVISION: 5.2
