AndPrime Impregnation Primer is a two-pack solvent-free epoxy primer designed to seal, strengthen and prepare porous or weak surfaces before applying high-performance coatings. It penetrates deeply to stabilise and consolidate concrete, steel and masonry, providing an ideal base for AndCoat HB Epoxy and other heavy-duty topcoats.

With excellent adhesion, low viscosity and chemical resistance, this epoxy primer ensures long-term performance in demanding environments such as warehouses, workshops, factories, chemical bunds and tank linings.

Key Features

• Deep penetrating impregnation primer for concrete and cementitious surfaces
• Enhances adhesion of subsequent epoxy and coating systems
• Low viscosity formula for superior surface penetration and sealing
• Helps reduce surface porosity and improve coating performance
• Provides a stable, well-bonded base for long-lasting finishes
  
• Improves durability and lifespan of the full coating system
• Easy to apply with consistent coverage
  

Surface Preparation 

Correct preparation is essential for optimum results:

• Concrete & Masonry: Ensure surfaces are fully cured (minimum 28 days), sound, clean and dry. Remove laitance, dust, oil, grease and other contaminants by vacuum blasting or grinding. Repair surface defects before application.

• Steel: Abrasive blast clean to SA 2½ (ISO 8501-1) or equivalent to remove rust and mill scale. If blasting is not possible, mechanically prepare to St3 standard. Coat immediately after preparation to avoid flash rusting.

• Previously Coated Surfaces: Remove unsound coatings and thoroughly abrade any remaining sound coating to provide a key.

• All surfaces must be free from moisture and contaminants before application.

Technical Data

• Type: Two-pack solvent-free epoxy primer

• Finish: Clear, low sheen

• Mix Ratio: 4:1 by volume (Base : Hardener)

• Volume Solids: Approx. 100%

• Viscosity: Low – penetrates porous substrates

• Theoretical Coverage: 4–6m² per litre (depending on porosity of substrate)

• Film Thickness:

  • Wet: 150–200μm per coat

  • Dry: 150–200μm per coat

• Pot Life: Approx. 30–40 minutes at 20°C (shorter at higher temperatures)

• Overcoating Interval: Minimum 8 hours, maximum 48 hours at 20°C

• Full Cure: 5–7 days at 20°C

• Chemical Resistance: Good resistance to water, oils, fuels and a range of dilute acids and alkalis

• VOC: Solvent-free

Directions for use 

• Mixing: Combine the two components in the specified 4:1 ratio. Mix thoroughly with a slow-speed drill and paddle until uniform. Only mix what can be applied within the pot life.

• Application Methods: Apply by brush, roller or airless spray. Ensure an even coat and avoid puddling on the surface.

• Environmental Conditions:

  • Substrate and ambient temperature: 10–30°C

  • Surface must be at least 3°C above dew point

  • Maximum relative humidity: 85%

• Overcoating: Apply subsequent coats between 8 and 48 hours at 20°C. If the maximum interval is exceeded, abrade the surface to provide a key.

• Curing: Allow 5–7 days at 20°C for full chemical cure before subjecting to chemical or heavy mechanical exposure.

• Cleaning: Clean tools and equipment immediately after use with AndCoat Thinner or suitable solvent.

• Storage: Store in a cool, dry and well-ventilated location between 5°C and 35°C. Keep away from direct sunlight.

Suggested Topcoats

AndPrime Impregnation Primer is a high-performance impregnation primer designed to seal and stabilise porous concrete and mineral substrates prior to coating application. It enhances adhesion, reduces substrate absorbency and promotes a durable, long-lasting finish. For optimum system performance, AndPrime is recommended for use with the AndCoat range of protective topcoats, including AndCoat HB, AndCoat HB LT and AndCoat HB PU. These systems provide excellent chemical resistance, abrasion protection and long-term surface durability across a wide range of industrial environments.

Data Sheets

AndPrime Impregnation Primer - TDS