The choice between rock wool board and glass wool board depends on specific project requirements and considerations, as both materials have distinct characteristics. Here are some key points to compare the two:

1. Material Composition:

Rock Wool Board: Made from natural rocks, typically basalt or diabase, through a hightemperature melting and fiberizing process.

Glass Wool Board: Manufactured from molten glass, forming fibers through a similar process.

2. Thermal Insulation:

Rock Wool Board: Generally has better thermal insulation properties compared to glass wool. It has a higher density, which contributes to enhanced insulation.

Glass Wool Board: Offers good thermal insulation but may have a lower density compared to rock wool.

3. Fire Resistance:

Rock Wool Board: Excellent fire resistance due to its noncombustible nature.

Glass Wool Board: Also noncombustible, providing good fire resistance.

4. Acoustic Insulation:

Rock Wool Board: Effective in absorbing sound waves, providing good acoustic insulation.

Glass Wool Board: Offers good acoustic insulation as well.

5. Density:

Rock Wool Board: Generally has a higher density, contributing to its durability and thermal performance.

Glass Wool Board: May have a lower density, which can affect its insulation and structural properties.

6. Moisture Resistance:

Rock Wool Board: Generally resistant to moisture absorption.

Glass Wool Board: Can absorb moisture, and it might require additional moistureresistant treatments in certain applications.

7. Cost:

Rock Wool Board: Costs may vary, but it is often considered costeffective for its performance.

Glass Wool Board: Generally more economical than some other insulation materials.

8. Application:

Rock Wool Board: Commonly used in applications where higher thermal performance and fire resistance are crucial, such as industrial settings and firerated constructions.

Glass Wool Board: Suitable for various applications, including residential and commercial insulation where costeffectiveness and good thermal and acoustic insulation are required.

Ultimately, the choice depends on the specific needs of the project, considering factors such as insulation requirements, fire safety standards, budget constraints, and other applicationspecific criteria.