AndCoat Prime WD – Water-Based Epoxy Primer for Concrete, Wood & Asphalt

AndCoat Prime WD is a low-viscosity, water-dispersed epoxy primer designed to provide excellent adhesion to concrete, wood, plaster, asphalt, and unglazed tiles. It serves as an ideal primer or sealer prior to applying any resin-based coating system, ensuring maximum bonding strength and surface stability.

With its low odour, solvent-free, and water-based formulation, AndCoat Prime WD is easy to apply and suitable for use in occupied or enclosed environments. It delivers a durable, high-solids film that effectively seals porous surfaces and enhances the performance and longevity of subsequent coatings.

Key Features:

• Low-odour, water-based epoxy primer
• Excellent adhesion to concrete, asphalt, wood, and tiles
• Acts as a primer and sealer for resin-based finishes
• Easy to apply by brush or roller
• Environmentally friendly and low VOC
• High solids content for superior coverage and bonding strength
• Supplied in 5kg units

Surface Preparation

To be assured of maximum adhesion and best properties from Andrews Coatings products the correct surface preparation on is essential. The concrete substrate must be a minimum of 28 days old and the residual moisture content must be a maximum of 75% RH. The substrate should be sound with a minimum compressive strength of 25 N/mm2 and a minimum pull-off strength of 1.5N/mm2. The surface must be clean, dry and free of contaminants such as dirt, oil, grease, coatings and surface treatments and contain a functioning damp proof membrane. If in doubt, apply a test area first. Concrete substrates should be mechanically prepared using vacuum enclosed abrasive blast cleaning or diamond grinding equipment to remove laitance and previous surface treatments followed by thorough vacuuming leaving an open textured surface. Weak concrete must be removed and repaired using recommended Andrews Coatings products.

Technical Data

• Coverage: 6–8 m² per kg

• Film Thickness: 60–100 microns DFT per coat

• Application: Brush or roller

Directions for Use

Apply by brush or roller onto the prepared surface at a nominal rate of 0.125 to 0.165 kg/m2 per coat, equivalent to a dry film thickness of 60 to 100 microns. Ensure good
ventilation after application, as this speeds up the physical drying stage of the curing process. The ambient temperature and relative humidity of the works area should be a minimum of 15°C < 65%RH during the application and curing period, if not adhered to this can affect the colour, appearance and performance of the system. Materials and substrate temperature must be above 10°C at all times.

Data Sheets

AndCoat Prime WD TDS