Fabrock® – stone wool insulation for precast concrete panels

A complete range of stone wool insulation products for precast concrete applications

Precast concrete is widely used to create building components such as walls and façades, combining the strength and durability of concrete with the benefits of offsite construction. 

 

Fabrock® stone wool insulation is developed for precast concrete offsite construction, where building elements are manufactured in factories before being transported and assembled on site. Increasingly used for its efficiency in terms of time, cost and quality control, offsite construction enables more reliable and consistent building processes. 

 

Fabrock® offers a complete range of tailor-made products, allowing you to combine fire safety, thermal performance, acoustic insulation and durability applicable to all Precast concrete wall types. This range supports a wide variety of precast concrete applications, helping you meet the specific requirements of different panel designs, manufacturing processes and installation methods. Whether used for non-load-bearing architectural façades or load-bearing wall systems, Fabrock® provides reliable insulation performance across residential, commercial and industrial construction projects. 

Solutions for precast concrete applications 

The Fabrock® range includes three stone wool solutions developed for specific precast concrete applications, providing a dedicated insulation offer for different panel designs and production requirements. 

 

Fabrock® PCP (Precast Concrete Panels) - designed for precast concrete sandwich panels used in structural wall applications.  

 

Fabrock® AFP-DD (Architectural Façade Panels – Dual Density) - developed for precast concrete non load bearing architectural façade panels. The unique Dual Density technology provides a robust mechanical fixing as well as weather protection for when the insulation is exposed to the elements. 

 

Fabrock® FGT-DD (Filigree / Twin Wall Systems – Dual Density) - for factory-installed insulation in filigree and twin-wall precast systems, supporting high compressive strength, the unique Dual Density slabs also allow for fast concrete casting on site.  

CROSS SECTION OF Fabrock® PCP, Fabrock® AFP DD and Fabrock® FGT DD

Technical performance of Fabrock® solutions 

Technical properties of Fabrock® PCP 

Fabrock® PCP is designed for precast concrete sandwich wall panels used in structural wall applications within the building envelope. It is used in residential, commercial and industrial projects where panels must combine insulation performance with mechanical strength during production, transport and installation. 

The product offers high compressive strength, stable thermal performance, resistance to moisture and is non-combustible, making it suitable for long-term use in precast systems. 

PROPERTY VALUE * ACCORDING
FIRE PERFORMANCE
Reaction to fire - Euroclass A1  EN 13501-1
THERMAL PERFORMANCE
Thermal Conductivity  0.034 to 0.038 mW/mK EN 12667
MECHANICAL PERFORMANCE
Compressive strength (cs)  Data on Request  
WATER REPELLANT PERFORMANCE
Water absorption (short-term) ≤ 1 kg/m2 EN 1609
Water absorption (long-term) ≤ 3 kg/m2 EN 12086
SPECIALISED INFORMATION
Thickness range 30 - 200 mm  
Dimensions 600 x 2000 mm  
CERTIFICATIONS
Health & safety  EUCEB / RAL  

*Please note that the values and dimensions shown are indicative only and provided for guidance purposes. They may vary depending on the specific product variant and the manufacturing site. For verified country-specific information, please contact us to request the applicable local datasheet and supporting documentation.

Technical properties of Fabrock® AFP-DD

Fabrock® AFP-DD is developed for non-load-bearing architectural precast concrete façade panels used in building envelope systems. Its dual density structure combines a rigid outer layer that improves fixing strength and handling stability with a stone wool core that provides thermal and acoustic insulation. 

The product is non-combustible, water-repellent, and maintains its performance and durability even when exposed to weather conditions during storage, transport and installation. Fabrock® AFP-DD is used in architectural precast façade systems where insulation performance, mechanical handling and surface requirements must be balanced. 

PROPERTY VALUE * ACCORDING
FIRE PERFORMANCE
Reaction to fire - Euroclass A1  EN 13501-1
THERMAL PERFORMANCE
Thermal Conductivity  0.034 to 0.036 mW/mK EN 12667
MECHANICAL PERFORMANCE
Compressive strength (cs)  Data on Request  
WATER REPELLANT PERFORMANCE
Water absorption (short-term) ≤ 1 kg/m2 EN 1609
Water absorption (long-term) ≤ 3 kg/m2 EN 12086
SPECIALISED INFORMATION
Thickness range 90 - 260 mm  
Dimensions 600 x 1200 mm  
CERTIFICATIONS
Health & safety  EUCEB / RAL  

*Please note that the values and dimensions shown are indicative only and provided for guidance purposes. They may vary depending on the specific product variant and the manufacturing site. For verified country-specific information, please contact us to request the applicable local datasheet and supporting documentation.

Technical properties of Fabrock® FGT-DD

Fabrock® FGT-DD is engineered for filigree and twin-wall precast concrete systems where insulation is installed during factory production prior to secondary on-site concrete casting. It is used in structural wall elements requiring high mechanical resistance during installation and casting operations. 

This dual density product combines high compressive strength, essential during concrete casting, with a robust surface that protects the insulation during pouring. This ensures stable positioning during both phases of production and resilience during on-site pouring in the second phase of casting. 

PROPERTY VALUE * ACCORDING
FIRE PERFORMANCE
Reaction to fire - Euroclass A1  EN 13501-1
THERMAL PERFORMANCE
Thermal Conductivity  0.039 mW/mK EN 12667
MECHANICAL PERFORMANCE
Compressive strength (cs)  Data on Request  
WATER REPELLANT PERFORMANCE
Water absorption (short-term) ≤ 1 kg/m2 EN 1609
Water absorption (long-term) ≤ 3 kg/m2 EN 12086
SPECIALISED INFORMATION
Thickness range 50 - 160 mm  
Dimensions 600 x 1200 mm  
CERTIFICATIONS
Health & safety  EUCEB / RAL  

*Please note that the values and dimensions shown are indicative only and provided for guidance purposes. They may vary depending on the specific product variant and the manufacturing site. For verified country-specific information, please contact us to request the applicable local datasheet and supporting documentation.

Frequently Asked Questions

What insulation solutions do ROCKWOOL Core Solutions offer for offsite construction?
Why choose stone wool insulation for precast concrete panels?
Can Fabrock® products be customised?
Are Fabrock® products sustainable?
Where can I find a technical data sheet?
How can I get technical support?

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