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The difference between glass wool board and rock wool board

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Update time : 2024-03-12
Glass wool board and rock wool board are both types of insulation materials used in construction, but they are made from different substances and exhibit slightly different properties. Here's a comparison: Composition: Glass Wool Board: Made from molten glass that is spun or blown into fibers and then formed into boards. It is essentially made from recycled glass materials. Rock Wool Board: Made from natural rocks, typically basalt or diabase, which are melted at high temperatures and then spun into fibers. It can also contain a small percentage of slag, a byproduct of steel production. Insulation Properties: Glass Wool Board: Typically has a higher R-value (thermal resistance) compared to rock wool board. It provides good thermal insulation and can also offer sound insulation properties. Rock Wool Board: Offers excellent fire resistance and can withstand higher temperatures compared to glass wool. It also provides good thermal and sound insulation. Fire Resistance: Glass Wool Board: While glass wool is fire-resistant, it may not have the same level of fire resistance as rock wool. However, it still meets safety standards for fire resistance. Rock Wool Board: Known for its exceptional fire resistance properties, making it a preferred choice for applications where fire safety is a significant concern, such as in industrial settings or where building codes require higher fire ratings. Moisture Resistance: Glass Wool Board: Generally, glass wool is more resistant to moisture compared to rock wool. However, prolonged exposure to moisture can reduce its insulation properties over time. Rock Wool Board: Can absorb moisture but still maintain its insulation properties. It is more resistant to moisture compared to other types of insulation materials like fiberglass. Density and Rigidity: Glass Wool Board: Typically lighter in weight and less dense compared to rock wool. It may be more flexible and easier to handle during installation.
The difference between glass wool board and rock wool board
Rock Wool Board: Generally denser and heavier, providing better structural support and rigidity. It may require more effort during installation due to its weight. In summary, both glass wool and rock wool boards offer effective insulation properties, but their suitability depends on specific project requirements such as fire resistance, thermal insulation, sound insulation, and moisture resistance. Glass wool tends to be lighter and more flexible, while rock wool excels in fire resistance and can withstand higher temperatures.
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