Rockwool products are free from gases such as CFC, HCFC and any other Ozone Depletion material. They represent no known threat to the environment. Rock wool is classified as zero depletion potential (ODP), zero Global warming potential (GWP) and help in reducing green house effect. Rockwool slabs are semi rigid panels manufactured from stable stone fibers bonded with minimum quantity of thermosetting resin binder. They are capable of withstanding an extreme temperature up to 750⁰ C.

Rockwool is made from a special grade of rocks named as BASALT. Rock wool is called in the names of stone wool insulation, mineral wool insulation, or slag wool insulation. Rock wool has a wide range of insulation applications due to its excellent ability to block sound, thermal and fire. Rock wool is light in weight , strong , re-silent, easy to handle and cut to suit intricate shapes.

Corrosion Free
Sound Absorption
Temp. Endurance


Rockwool products are free from gases such as CFC, HCFC any other Ozone Depletion material. Rock wool is classified as zero depletion potential (ODP) and zero Global warming potential (GWP) and help in reducing green house effect.


Rockwool slabs, blankets and pipes are available unfaced or with a facing of glass reinforced aluminimum Kraft (FSK), Black fibre glass tissue, packed in black poly bags, and wire mesh option depending on the application.

Density: Rock wool density ranges from 35 to 200 Kg/m3 depending on the application.

Products available :

  • STD size Slabs or Panels both facing and unfaced
  • Panels with Black poly bag facing
  • Blankets / rolls with GI wire mesh or FSK or acoustic liner facing
  • Pipe section with or without facing
  • Loose wool

Application temperature : Maximum 750° C


  • Standard size for panels : 1200x600x50/75mm or Multilayer
  • Standard size of the Blankets : 1.2 x 20 meter rolls

Rockwool high density slabs conforming to ASTM C 612 and Equivalent BS – 3958-5 are designed for the thermal and acoustic insulation of flat or slightly curved surfaces operating at temperatures up to 750 º C. These high density slabs are produced from long, non combustible fibers designed to bear high loads. They are easy to cut, fit and handle. The robust fibers combine high levels of thermal efficiency and acoustic absorption

Black ceiling veil
Aluminium foil (Fire resistant)
Aluminium reinforced in one direction
Aluminium reinforced in two directions

Slab without facing
Slab with Aluminium foil (Fire resistant) on one side
Slab with Aluminium foil (Fire resistant) facing on both sides
Slab with Aluminium foil reinforced on one side
Slab with Aluminium foil reinforced on both sides
Slab Sealed in Polyethylene bag
Slab with Black ceiling veil on one side
Applications: Designed for a wide range of applications at both high and low service temperatures, It is suitable for applications where high compressive strengths are required and where the insulation is subjected to mechanical loads and vibrations. They are ideal for traffic areas and ideal insulation for tank roofs.

Standard Delivery: ROCK WOOL products are available in densities of 40 to 200 kg/m3, In standard widths of 600 mm and lengths of 1000 and 1200 mm. Thickness vary from 30 to 120 mm. Other sizes are available on request.

Thermal Conductivity: ROCK WOOL Products show low thermal conductivity values. Typical figures are shown below as tested in accordance with BS 874 : 1986, and equivalent ASTMC – 177/C – 518

Mean Temp °C k-value W/mk 160 kg/m3 k-value W/mk 200 kg/m3
50 0.035 0.034
100 0.041 0.041
150 0.048 0.046
200 0.057 0.055
250 0.067 0.064
300 0.079 0.076
350 0.091 0.088
400 0.103 0.098

Service Temperature:

Can withstand temperature up to 750 º C when tested in accordance with DIN 52271 and ASTMC – 411. It can also withstand continuous temperatures up to 850 º C.

Fire Safety: Non combustible when tested in accordance with BS-476 part – 4 and ASTME-136. Class I, when tested in accordance with BS-476 part 7 and ASTME -84. Fire Resistant with integrity up to 240 min. and insulation up to 196 min,when tested as per BS-476 part-20.

Acoustical Properties: Typical sound absorption figures are shown in accordance with BS 3638 & ISO 0354.

Hz 70 kg/m3 100 kg/m3
125 0.23 0.22
250 0.70 0.71
500 1.06 1.00
1000 1.07 1.00
2000 1.00 1.00
4000 0.96 0.92


Compatible with all forms of material with which it is likely to come in contact in normal industrial and building applications.

Compression Resistance:

% Compression load kPa 200 kg/m3 100 kg/m3
1 6 4
2 12 8
3 18 12
4 24 16
5 30 20

Moisture: Water-repellent, non-hygroscopic, non-capillary, and does not absorb any moisture from air, Moisture has no effect on stability of slabs. Water absorption test certificate conducted under BS 2972 : Section 12 and ASTMC 209 are available upon request.

Chemical Neutrality: Chemically neutral with a pH value of 7.3 when tested in accordance with BD 2972 : Section 22 and ASTMC-871. It will neither cause nor promote corrosion. It meets the requirements of the standard specification for use over austenitic stainless steel as per ASTM C – 692 ( Corrosion ) test and ASTM C -871 ( Chemical Analysis ).

Biological properties: Rot-proof, non-hygroscopic, will not sustain vermin and will not encourage growth of bacteria, mould or fungi.

Physical properties: Asbestos free and shot content is very low when tested as per ASTM C 612 and BS-2972

Packaging: Supplied in shrink wrapped polyethylene.

Technical advice: For further details of information on technical data, specialist product information, applications, our sales office can be approached.

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  • Façade insulation
  • Duct Insulation
  • High temperature insulation for Oil ,gas , refineries & Boilers
  • Fire Stop insulation
  • Hydroponics, Growing plants inside home
  • Has Excellent acoustic properties, widely used as an acoustic insulation in residential and commercial buildings as well as industrial applications
Benefits of Rockwool

  • Eco friendly
  • CFC, HCFC any other Ozone Depletion material.
  • Rock wool is classified as zero depletion potential (ODP) and Zero Global warming potential (GWP) and help in reducing greenhouse effect