Bulk Rock Wool

Boz Altınay Construction Industry Inc.

What is Bulk Stone Wool? Properties and Application Areas

Industrial facilities, boiler rooms, systems exposed to high temperatures, and irregular voids require an effective insulation solution. In such specialized areas where classic panel or mat type products are insufficient,  cast rock wool stands out with its flexibility in form and high heat resistance.

What is Bulk Stone Wool?

Loose -form  ,  free-pourable rock wool is an insulation material produced by melting natural stones such as basalt and diabase at high temperatures and transforming them into fibers   . It can be easily applied to complex surfaces, voids, or irregular areas where sheet or mat products are unsuitable. Its high temperature resistance makes it a preferred choice, particularly in industrial facilities.

Technical Specifications

  • Material:  Stone wool (mineral fiber)

  • Form:  Loose, free-pourable

  • Thermal conductivity coefficient (λ):  Approximately 0.040 W/mK

  • Fire reaction class:  A1 (non-combustible)

  • Temperature resistance:  Up to 650°C – 850°C (depending on product type)

  • Density:  Between 60 and 100 kg/m³ (may vary depending on application requirements)

  • Water repellency:  Can be produced with hydrophobic properties upon request.

Areas of Application

📍  Industrial Boilers and Furnaces
📍  Petrochemical Plants and Refineries
📍  Pipe and Duct Insulation (Irregularly Shaped Areas)
📍  Boiler Rooms
📍  Gaps in Double-Walled Metal Panels
📍  Environments Requiring Acoustic Treatments
📍  Gap Fillings Requiring Fire Retardancy

Advantages of Bulk Stone Wool

✅  Flexible Application:
Easily installed on any irregular surface. Ideal for gaps that cannot be reached with sheets or mats.

✅  High Thermal Insulation:
Its high-temperature resistant structure makes it suitable for process insulation.

✅  Class A1 Fire
Resistance: Enhances facility safety thanks to its fire resistance.

✅  Provides Sound Insulation. Its
gap-filling properties support acoustic performance.

✅  Quick and Practical Application:
Because it’s a loose-fitting design, no special cutting is required; it can be applied quickly.

✅  Made from environmentally friendly and recyclable
natural minerals, it is long-lasting.

What should be considered when choosing bulk rock wool?

  • The product’s temperature resistance should be checked according to the application temperature.

  • Density and hydrophobic properties should be determined according to the application area.

  • Fire safety compliance certificates (Class A1, etc.) should be examined.

  • It is important for the product to have quality certificates such as CE and TSE.

❓ Frequently Asked Questions (FAQ)

What is bulk rock wool?

Loose-form, free-pourable insulation is made from rock wool. It is particularly suitable for irregular spaces.

Where is it used?

It is used in boiler rooms, petrochemical plants, industrial furnaces, and irregular spaces.

Is it fire resistant?

Yes. It has a Class A1 fire-resistant structure and is an ideal solution in terms of fire safety.

What temperature can it withstand?

Depending on the product type, it can withstand temperatures ranging from 650°C to 850°C.