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EWI SYSTEM INSULATION

PRODUCT

CVRock® 

Render Slab

CVRock® Render Slab is a stone mineral wool insulation board designed for External Wall Insulation (EWI) systems, offering superior thermal performance, acoustic absorption, and fire resistance. With a declared thermal conductivity of λD = 0.035 W/m·K and excellent sound absorption of αW = 1.00, it ensures maximum comfort, energy efficiency, and noise reduction in modern façade applications. Manufactured in the standard format of 1200 × 600mm, CVRock® Render Slab provides a stable and precise base for render systems, ensuring strong adhesion of base coats and finishes. Its high compressive strength and dimensional stability guarantee long-term performance, even under varying temperature and humidity conditions. As a Euroclass A1 non-combustible insulation material, it offers complete fire safety for external wall systems. Durable, sustainable, and easy to install, CVRock® Render Slab is the ideal solution for EWI applications in both new-build and refurbishment projects, delivering lasting protection and superior façade performance.

CVRock Render H slab product image
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System Compatibility

Fully compatible with all major EWI render systems — including mineral, acrylic, silicone, and polymer-modified coatings.
The stable surface structure ensures optimal adhesion, crack resistance, and a flawless rendered finish.

High Compressive Strength & Dimensional Stability

The robust, fibre-bonded structure ensures long-term mechanical durability.
All products maintain their shape and insulating properties even under high loads, mechanical stress, or thermal fluctuations — ideal for render systems and impact-prone zones.

Application

External Wall Insulation (EWI) systems with mineral or synthetic renders

Solid wall refurbishments and retrofitting of existing buildings

Masonry and concrete façades requiring improved thermal and acoustic performance

Multi-layer façade systems as an outer insulation layer

Thermal and acoustic insulation in service areas, corridors, and internal walls

Fire-safe insulation behind rendered façades in low- and mid-rise buildings

Downloads

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Tell us about your project, and we will recommend the most suitable solution based on application type, performance requirements, and build-up design.

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