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Johnstone’s Stormshield High Performance Scratch Render

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Johnstone’s Stormshield High Performance Scratch Rende

Achieve a durable, weather-resistant exterior finish with Johnstone’s Stormshield High Performance Scratch Render. Engineered for superior protection and a professional appearance, this high-quality render provides an excellent base for decorative coats, offering long-lasting performance in all weather conditions.

Finish your exterior wall system with Johnstone’s Stormshield High Performance Scratch Render — a reliable, weatherproof solution designed for professional results and long-term performance.


Total area: 1 m²

If you would like to ‘make any changes’ please contact us, stating your order number.

Application & Usage

Suitable for substrates like brickwork, blockwork, and existing render surfaces. Typically applied in a single coat with a thickness of 10-15mm. Surface preparation is essential—ensure substrates are clean, sound, and dampened before application. Can be applied by trowel or spray for efficiency.

Key Features:

  • High-Performance Formulation: Designed to withstand the rigors of the UK’s climate, including rain, frost, and UV exposure, ensuring the longevity of your wall system.
  • Excellent Adhesion & Flexibility: Bonds strongly to substrates such as brick, block, and existing render, accommodating minor movements without cracking.
  • Weather-Resistant & Vapour Permeable: Provides a barrier against water ingress while allowing walls to breathe, reducing damp and mould issues.
  • Smooth, Scratch Finish: Easily applied with a trowel or spray to produce a uniform, textured surface ready for finishing coats.
  • Versatile Use: Suitable for new build, refurbishment, and retrofit projects, ideal for applying over various backgrounds.
  • Eco-Friendly: Low VOC formulation supports sustainable building practices, with minimal environmental impact.
  • Prepared for Finishing: Designed to be finished with decorative renders or paints, providing a perfect base for the final aesthetic.

Technical Specifications:

  • Composition: Polymer-modified cement-based scratch render
  • Coverage: Approximately X m² per bag (depending on thickness)
  • Drying Time: Usually 24-48 hours, depending on weather conditions
  • Finish: Textured scratch finish, ready for decorative coats
  • Colour: Available in various standard shades

Guarantee & Standards:

Meets all relevant UK building standards. Backed by manufacturer guarantees for quality and performance.

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