Rockwool

Rockwool ProRox Slabs for Industrial Thermal Insulation

High-Performance Stone Wool Insulation Slabs for Process Equipment, Vessels, Boilers and High-Temperature Industrial Applications

Rockwool® ProRox Slabs are engineered to provide reliable thermal and acoustic insulation for demanding industrial process applications. Manufactured from premium volcanic stone wool, the range delivers outstanding thermal performance, excellent dimensional stability and non-combustible fire protection while helping reduce heat loss and improve energy efficiency.

Available in ProRox SL930, SL950, SL960 and SL980 grades, the range offers solutions for a variety of operating temperatures, mechanical load requirements and industrial environments. Suitable for vessels, boilers, tanks, flue gas ducts and process equipment, ProRox slabs provide durable, long-term insulation performance for new installations and maintenance projects.

Why Choose Rockwool Slabs

ROCKWOOL ProRox stone wool slabs combine excellent thermal insulation with outstanding mechanical performance, making them a trusted solution for industrial process insulation.

Available in multiple densities and performance grades
Maximum service temperatures up to 750°C
Non-combustible Euroclass A1 fire classification
Low thermal conductivity for improved energy efficiency
Excellent acoustic insulation properties
High compressive strength and dimensional stability
Water absorption ≤ 1 kg/m² (selected grades)
Suitable for thermal and acoustic insulation
Aluminium foil facing available on selected products
Manufactured to EN 14303 industrial insulation standards

Rockwool Slabs

Property	SL930	SL950	SL960	SL980
Density	60 kg/m³	80 kg/m³	100 kg/m³	145 kg/m³
Fire Classification	A1 Non-Combustible	A1 Non-Combustible	A1 Non-Combustible	A1 Non-Combustible
Thermal Conductivity (50°C)	0.040 W/mK	0.040 W/mK	0.039 W/mK	0.038 W/mK
Maximum Service Temperature	350°C	640°C	500°C	750°C
Water Absorption	<1 kg/m²	<1 kg/m²	<1 kg/m²	<1 kg/m²

Typical Applications

ROCKWOOL ProRox slabs are designed for thermal and acoustic insulation of industrial equipment where reliable insulation performance and mechanical durability are required.

Industrial process vessels
Storage tanks
Boiler insulation
Flue gas ducts
Industrial columns
Process equipment
Heat exchangers
Pipework insulation
Acoustic insulation systems
Industrial plant insulation

Typical Industries

ROCKWOOL ProRox insulation is specified throughout industries requiring high-performance thermal insulation, fire protection and acoustic control.

Oil & gas
Petrochemical processing
Chemical processing
Power generation
Industrial manufacturing
Process engineering
Food processing
Pharmaceutical manufacturing
Energy production
Industrial maintenance

Technical Support and Specification Guidance

Selecting the correct ProRox slab grade ensures optimum thermal performance, mechanical strength and long-term reliability. Service temperature, equipment geometry, structural loading and insulation thickness should all be considered when selecting between the SL 930UK, SL 950UK, SL 960UK and SL 980 grades.

Our technical team can provide guidance on product selection, insulation design and specification support, ensuring the most suitable ROCKWOOL ProRox solution is chosen for your industrial application.

Need help specifying the right material?

Speak with our technical specialists to discuss your industrial insulation requirements. We can help you select the correct ProRox slab grade, insulation thickness and specification to maximise energy efficiency, improve process performance and extend equipment service life.

StudweldPro-UK