EWI System Insulation
by
Coverock Insulation
Our complete range of stone wool insulation products — Coverock®, CVRock® and Coverslab® — is designed to provide excellent performance in External Thermal Insulation Composite Systems (ETICS).
Each solution combines high thermal efficiency, dimensional stability, and fire safety, making it ideal for both new builds and renovation projects.
Developed for long-term façade protection, our ETICS products ensure durable adhesion, resistance to mechanical stress, and superior vapor permeability, maintaining the integrity of the façade under all weather conditions.
With outstanding thermal and acoustic insulation properties, the Coverock Insulation products contribute to energy savings, comfort, and sustainability in modern building design.
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.
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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
CVRock Render Slab CVRock Render H Slab
CVRock Render Slab CVRock Render H Slab
CVRock Render Slab CVRock Render H Slab
PRODUCT
Coverock® R90
Coverock R90 product is a type of stone mineral wool that is specifically designed for use in External Wall Insulation (EWI) systems. It provides excellent thermal insulation, and once installed, it is well-suited for receiving both hand-applied and machine-applied, mesh-reinforced render systems.
In addition to its EWI applications, Coverock R90 can also be used for internal and external insulation of buildings, providing effective protection against heat loss, noise pollution, and fire protection. Notably, this product is classified as an A1 non-combustible material, which makes it a safe and reliable choice for a range of building insulation needs.
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
Coverock R90 Coverock R110
Coverock R90 Coverock R110
Coverock R90 Coverock R110
PRODUCT
COVERSLAB® R
Coverslab® R is a robust stone mineral wool insulation board specifically developed for External Wall Insulation (EWI) systems.
It delivers excellent thermal efficiency, mechanical strength, and fire resistance, making it ideal for both new-build and refurbishment projects.
With a declared thermal conductivity of λD = 0.035 W/m·K,
Coverslab® R ensures superior thermal comfort and energy savings while maintaining outstanding vapor permeability for a healthy building envelope.
Its dense, resilient structure provides strong adhesion for base coats and renders, ensuring long-term durability and surface stability.
Fully Euroclass A1 non-combustible, Coverslab® R offers reliable fire protection and contributes to the safety and performance of external wall systems.
Manufactured in 1200 × 600mm format, it is perfectly suited for modern EWI applications — combining strength, efficiency, and sustainability in one dependable insulation solution.
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Excellent thermal insulation performance (λD = 0.035 W/m·K)
Provides outstanding thermal efficiency, minimizing heat loss and ensuring stable indoor comfort throughout the year.
Vapor-Permeable Yet Hydrophobic
Allows walls to “breathe” while preventing water penetration.
This ensures that moisture does not accumulate within the insulation system, maintaining the integrity of both the insulation and render layers over time.
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
Coverslab R
Coverslab R
Coverslab R
