Bostik Plasterer's Stabilising Primer – 5L / 10L

Ready-to-Use Interior Primer for Skim Coat Preparation

Bostik Plasterer's Stabilising Primer is a water-based, green-tinted primer developed specifically for preparing old or porous walls prior to re-skimming. Designed with professionals in mind, it stabilises dusty or absorbent surfaces and promotes strong adhesion for finish coats. With no mixing required, it's quick, clean, and easy to apply straight from the tub.

Key Features & Benefits

• Excellent surface key: Promotes strong adhesion for finish plaster and skim coats
• Green-tinted for visibility: Ensures complete and even coverage during application
• Stabilises difficult surfaces: Ideal for powdery, chalky or previously painted walls
• Ready to use: No dilution or mixing required
• Low odour & water-based: Safe for interior application with easy cleanup

Suitable Substrates

• Brick and blockwork
• Concrete and render
• Plaster and plasterboard
• Previously skimmed or painted walls (after preparation)

Technical Specifications

• Form: Viscous liquid
• Colour: Green
• Coverage: 3–4 m² per litre depending on surface condition
• Drying Time: Approx. 24 hours under normal indoor conditions
• Use: Interior only
• Storage: Store in a cool, dry area above +5 °C; protect from frost

Application Instructions

1. Ensure all surfaces are sound, dry, and free from dust, oil, and loose material
2. Apply using a brush or roller, ensuring an even coat across the surface
3. Allow the primer to dry fully (typically 24 hours) before applying skim coat or finishing plaster
4. Clean tools with water immediately after use

Limitations & Notes

• For interior use only – not suitable for external walls
• Not recommended for glossy or sealed surfaces (e.g. tiles, plastics)
• Not suitable as a bonding agent for dot-and-dab plasterboard fixing
• For high-suction masonry or external prep, use Bostik Renderers Stabilising Primer

Bostik Plasterer's Stabilising Primer is the professional's go-to solution for prepping uneven or powdery surfaces prior to skimming. It simplifies the process and guarantees better results when re-plastering interior walls.