RLA Non Porous Primer is a fast-drying, water-based primer formulated to promote adhesion of RLA waterproof membranes and tile adhesives over difficult-to-bond substrates. It provides a safe, effective alternative to solvent etch primers and eliminates the need for mechanical grinding or acid etching.
Designed for internal and external applications, RLA Non Porous Primer creates a high-adhesion surface film that bonds reliably to metals, tiles, plastics, and dense concrete. Once dry, it forms a thin, durable coating that enhances the performance and longevity of the applied membrane or adhesive system.
This primer is ideal for renovation or remedial projects where existing non-porous surfaces need preparation prior to waterproofing or tiling.
• Water-based and low odour
• Fast drying (30 minutes @ 20 °C)
• Outstanding adhesion to non-porous substrates
• Eliminates the need for solvent etch primers or grinding
• Compatible with RLA water-based membranes and adhesives
• Suitable for internal and external applications
• Safe and easy to apply
• Excellent coverage rate of 10 m² per litre
• Primer for non-porous substrates before applying membranes or tile adhesives
• Precast and tilt-up concrete surfaces
• Glazed ceramic tiles and rigid plastics (PVC)
• Fibre cement sheeting including Hardies Scyon Secura™
• Metals including mild steel, galvanised iron, zincalume, stainless steel, and aluminium
• Particleboard and GRC (glass reinforced concrete)
• Ideal for renovation, refurbishment, and remedial works
• Appearance: Blue viscous liquid
• Type: Water-based adhesion primer
• Application method: Brush or roller (apply neat)
• Coverage: Approx. 10 m² per litre (1 coat)
• Drying time: Approx. 30 minutes @ 20 °C / 50 % RH
• Recoat / overcoat: Once dry to touch
• Packaging: 1 L, 5 L, and 20 L containers
• Shelf life: 12 months (unopened, stored between 5 °C and 35 °C)
• Clean-up: Water while wet
• Application temperature: Between 5 °C and 35 °C
• Do not apply over damp surfaces or in immersed applications
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