Bostik Renderers Stabilising Primer – 10L

£58.80

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A ready-to-use grey primer for rendering professionals, Bostik Renderers Stabilising Primer creates a consistent surface on porous and non-porous substrates. It enhances adhesion, eliminates the need for scratch coats, and contains 20% recycled material. Ideal for external walls and a reliable key for render.

Size

10 Litre

Product variants

Delivery and Shipping

Place your order before 3pm for next working day delivery.

Please note: Additional delivery charges may apply for Northern Ireland, Isle of Wight, Isle of Man, Isles of Scilly, Scottish Highlands & Islands, and Channel Islands. We will contact you to inform you of any additional costs once your order is received, or you can call us on 0800 111 4898 beforehand to confirm.

Description

Professional-Grade Surface Preparation for External Rendering

Bostik Renderers Stabilising Primer, powered by Plasprime® Technology, is developed for the rendering professional. It primes and stabilises both porous and non-porous external surfaces, ensuring excellent adhesion and a uniform substrate for new render applications. Grey in colour for easy visibility, it also contains approximately 20% recycled material, supporting more sustainable building practices.

Key Features & Benefits

Exceptional surface key: Promotes render adhesion on concrete, brick, block, and plaster
Replaces scratch coats: Eliminates the need for an initial keying layer on many substrates
Controlled application: Grey tint ensures even, visible coverage
Ready to use: No mixing required—apply directly with brush or roller
Sustainable formulation: Contains ~20% recycled content

Technical Specifications

Form: Viscous liquid
Colour: Grey
Coverage: 2–4 m² per litre depending on substrate
Drying Time: Typically 24 hours
Application Temperature: Above +5 °C
Shelf Life: 12 months in unopened packaging

Application Guidelines

Ensure surface is dry, clean, and free of dust, oil, or loose material.
Apply directly from the container using a soft brush or roller.
Allow to dry fully (approx. 24 hrs) before applying render.

Product Comparison: Stabilising Primer vs Common Alternatives

Feature / Product	Bostik Renderers Stabilising Primer	SBR Bonding Agent	PVA Bonding Agent	Traditional Scratch Coat
Purpose	Priming & stabilising before render	Bonding agent for difficult substrates	Bonding & sealing	Mechanical keying layer
Porous Surfaces	✔	✔	✔	✔
Non-Porous Surfaces	✔	⚠ Requires mechanical key	✘	✘
Replaces Scratch Coat	✔	✘	✘	N/A
Ready to Use	✔	✘ (dilution needed)	✘ (dilution needed)	✘ (site mix)
Coloured for Visibility	✔ Grey	✘ Clear/white	✘ Clear	✘
Interior/Exterior Use	✔ Both	✔ Both	✘ Mainly interior	✔ Both
Adhesion Strength	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐	⭐⭐⭐
Contains Recycled Material	✔ ~20%	✘	✘	✘

Storage & Safety

Store upright between +5 °C and +30 °C in a dry place, protected from frost and sunlight
Secure lid tightly after use to prevent drying
Clean tools immediately with water
Refer to SDS for full handling precautions

Bostik Renderers Stabilising Primer simplifies exterior wall preparation—cutting labour, increasing consistency, and delivering dependable adhesion for professional render applications.