What is Rock Wool Insulation 2025?

Rock wool, also known as mineral wool, is a high-density insulation material made by melting natural stone (like basalt or diabase) at extreme temperatures and spinning it into fibers. Unlike regular insulation, rock wool is designed for extreme conditions — especially high heat, fire safety, and industrial durability.

In Pakistan, rock wool is gaining popularity in factories, power plants, commercial buildings, and even residential generator rooms where fire and heat resistance is critical.

 Why Rock Wool is Ideal for Pakistan’s Industrial Needs

Pakistan’s industries operate in high-temperature environments: cement plants, textile factories, power plants, and boiler rooms. These settings require insulation that can:

• Resist heat up to 750°C
• Slow fire spread
• Reduce mechanical noise
• Improve worker safety and plant efficiency

That’s where rock wool insulation becomes essential.

 Forms of Rock Wool Insulation Available in Pakistan

1. Rock Wool Blankets (Wire Mesh Faced or Plain)

• Used in wall cavities, tanks, industrial ducts
• Available with galvanized or stainless-steel wire mesh for strength and support
• Can be stitched with glass yarn or metal wire

Common Specs:

• Thickness: 20mm – 100mm
• Width: 1 meter
• Length: 2.5 to 5 meters
• Density: 40–140 kg/m³
• Temp Resistance: up to 750°C

2. Rock Wool Pipe Sections

• Preformed cylindrical insulation for hot pipes and boilers
• Available in custom diameters and thicknesses

Best For:

• Steam lines
• Industrial pipelines
• Heat exchangers

Specs:

• Density: ~140 kg/m³
• Thickness: 25–50 mm
• Pipe bore sizes: ½” to 12″
• Temp resistance: up to 750°C

3. Rock Wool Slabs

• Rigid panels for wall insulation or generator rooms
• Used in schools, hospitals, cinemas, and commercial buildings for sound and fire protection

Specs:

• Thickness: 25mm – 75mm
• Density: 40–100 kg/m³
• Facings: plain, aluminum foil, or mesh stitched

Fireproof Performance

Rock wool is naturally non-combustible. It doesn’t burn, melt, or emit toxic smoke, even under direct flame.

 Certified Fire Resistance:

• Withstands up to 750°C
• Meets international standards: ASTM C612, BS 3958, DIN EN 13501
• Ideal for fire zones like:
  • Server rooms
  • Generator enclosures
  • Oil and gas facilities
  • High-rise escape walls

 Acoustic Insulation Properties

Beyond fire resistance, rock wool also provides excellent sound absorption, making it perfect for:

• Auditoriums
• Recording studios
• Offices
• Wall partition systems

Its dense, fibrous structure traps sound waves and reduces echo and airborne noise.

 Benefits of Rock Wool Insulation

 Rock Wool Price in Pakistan (2025 Estimate)

📌 Note: Prices vary based on size, facing (plain or foil), and supplier.

 Where to Buy Rock Wool in Pakistan?

✅ Recommended Supplier: BAS Group (Lahore)

• One of Pakistan’s top insulation providers since 1937
• Offers wire mesh blankets, pipe sections, and fireproof panels
• Supplies to cement plants, oil refineries, contractors, and MEP firms

 Installation Tips for Rock Wool

• Always wear gloves and a mask
• Use proper fasteners or wire mesh for high-temp areas
• Seal all gaps to maintain fire and thermal performance
• Use aluminum foil tape to secure foil-faced panels

 Rock Wool vs Glass Wool vs Rubber Foam

 Conclusion

If your project requires serious heat resistance, fireproofing, or sound control, rock wool insulation is your go-to material. From power plants in Faisalabad to hospitals in Karachi, rock wool is trusted for its durability, safety, and performance.

FAQ

What is ROCKWOOL used for?

ROCKWOOL is mainly used for thermal and acoustic insulation in buildings, industrial plants, and HVAC systems. It is also fire-resistant, making it ideal for applications where fire safety, soundproofing, and energy efficiency are important.

What is ROCKWOOL made out of?

ROCKWOOL is made from natural volcanic rock, typically basalt or diabase, which is melted at high temperatures and spun into fibers. These fibers are then compressed into boards, rolls, or loose-fill products for insulation.

Is ROCKWOOL safe for humans?

Yes, ROCKWOOL is generally safe for use when installed properly. It is non-toxic and does not release harmful chemicals. However, during installation, protective gear such as gloves and a dust mask is recommended to avoid skin irritation or inhalation of loose fibers.

What is another name for ROCKWOOL?

Another name for ROCKWOOL is mineral wool or stone wool. These terms are often used interchangeably, especially in the insulation industry.

Is ROCKWOOL a good insulation?

Absolutely. ROCKWOOL offers excellent thermal insulation, sound absorption, and fire resistance. Its performance remains stable over time, and it does not absorb moisture, making it a long-lasting and effective insulation solution.

What is ROCKWOOL insulation used for?

ROCKWOOL insulation is used in:

• Walls and roofs of residential and commercial buildings

• Industrial equipment for heat and noise control

• HVAC duct insulation

• Fire barriers in high-risk zones
  Its versatility makes it suitable for both residential and heavy-duty industrial applications.

What are the disadvantages of ROCKWOOL insulation?

Some drawbacks of ROCKWOOL insulation include:

• Higher cost compared to fiberglass insulation

• Can cause skin or respiratory irritation during handling

• Heavier weight, which may require stronger structural support

• May release dust when cut or disturbed

Is ROCKWOOL better than insulation?

ROCKWOOL is a type of insulation, but when compared to others like fiberglass or foam, it often performs better in fire resistance, moisture control, and soundproofing. While it might be more expensive, it provides superior durability and safety, especially in demanding environments.