DPM Primer is a highly advanced twin pack epoxy. It has been formulated to provide an effective damp proof barrier onto concrete where there is a defective or non-existent damp proof membrane.
- Twin pack epoxy resin
- Moisture tolerant
- Moisture suppressant
- Highly resistant to rear side soaking with water
- Suitable for dry or damp conditions, old or new concrete
Look at our range of epoxy floor primers. They also answer bespoke needs such as Extra Fast Hardening (XFH), extra chemical resistance and low temperature curing requirements. Contact Polycote technical helpline for further advice.
DPM Primer is a solvent-free, low viscosity, twin pack epoxy resin with water-reactive properties. Designed for application to open pored damp surfaces, DPM Primer is highly resistant to rear side soaking from water.
DPM Primer can also be used for existing concrete slabs where there is a defective or
non-existent damp proof membrane or where a degree of moisture tolerance is required prior to a resin floor system being laid.
DPM Primer is a system for permanently damp concrete floors or where the DPM is not
effective or missing. It is not in itself a coating or floor paint, and must always be over-coated with an appropriate top coat. If using over under-floor heating, please call our Technical Helpline to confirm suitability.
Suitable substrates: DPM Primer may be applied to damp open-pored concrete surfaces
Colour: DPM Primer is mid grey.
Packaging: DPM Primer is supplied in pre-measured quantities as a two part 5kg unit, comprising an epoxy resin blend and hardener.
Pot life: 30 minutes @ 20°C
Application temperature: Ideal application temperature range is between +15˚C and +25˚C. Curing time will be extended at lower temperatures. IMPORTANT: Ambient temperature must not fall below +5˚C or becondensing and substrate must be kept at least 3°C above the dew point during the application and curing process to avoid risk of condensation or blooming on the surface.
Cure time: Recoat time is 12 hours or once surface has lost tackiness.
DPM Primer must be over-coated within 48 hours to ensure intercoat adhesion.
Coverage rate: Approximately 4.0 m² per kg at 190 microns thickness, depending on the texture and porosity of the surface, and also on the substrate moisture content and absorption rate. Two coats are required.
Number of parts supplied: 2
Colour: Mid Grey
Priming for: Polycote Flortex product range
Surface Preparation
THOROUGH SUBSTRATE PREPARATION IS ESSENTIAL.
The surface must be free of brittle particles and laitence. Any remains of previous coatings should be removed by means of scabbling, shotblasting and/or diamond grinding.
Important: Free pores must be exposed to ensure good adhesion to the surface.
All water must be removed from the surface, leaving it damp but not wet. DPM Primer may then be applied to the damp surface immediately after cleaning. The design strength of concrete
surfaces must be a minimum of 25 MPa compressive strength at 28 days.
Mixing
Empty the resin into a suitable container, then add the hardener and thoroughly mix for at least 3 minutes until a homogeneous mix is achieved. For best results use a slow speed drill with a mixing paddle, making sure all material from the sides and bottom of the container are thoroughly mixed in.
Thorough mixing is imperative as an unmixed product will result in a poor or non-cure situation.
Application
Apply by brush, roller, or squeegee, in one or more continuous applications until the material is absorbed and a film has formed. Make certain that the entire surface is completely covered,
pin-hole free with no gaps or cavities, to prevent water migration. Once the first coat has cured, add a second coat at right angles to the first.
If the DPM Primer is being used underneath a screed or self level we advise that you apply one coat of DPM Primer to the surface and allow to cure and then apply a Wsecond coat with kiln dried sand broadcast into the wet coating to create a key for the screed or self level to adhere to.
UNDER NO CIRCUMSTANCES SHOULD AGGREGATE BE ADDED TO THE FIRST COAT as this will allow water to bleed through the primer and contaminate the following coats.
A minimum of two coats are required.
Do not exceed the coverage rate of 4m²/kg under any circumstances
