Stone wool is produced in various densities, each suited for specific construction applications depending on the requirements for thermal insulation, soundproofing, and mechanical strength. Here’s an overview of where and why different densities of stone wool are used:
1. Low Density (30-50 kg/m³)
- Application:
- Attic ceilings.
- Internal partitions.
- Framed walls.
- Sloped roofs.
- Why:
- Low-density stone wool provides excellent thermal insulation because it contains a lot of air, which enhances its insulating properties. These materials are lightweight and flexible, making them easy to install in structures where high mechanical strength is not required.
2. Medium Density (50-100 kg/m³)
- Application:
- Ventilated facades.
- Floors and ceilings with light loads.
- External thermal insulation systems.
- Why:
- Medium-density stone wool balances thermal insulation and mechanical strength, making it suitable for use in areas that require moderate load-bearing capacity and durability. This type of wool is dense enough to resist deformation while still maintaining good insulation properties.
3. High Density (100-150 kg/m³ and above)
- Application:
- Flat roofs.
- High-load floors.
- Industrial and public buildings.
- Load-bearing structures.
- Why:
- High-density stone wool is used in applications where high mechanical properties and load resistance are required. This material offers greater rigidity and compression resistance, making it ideal for use in structures exposed to intense mechanical impacts. Additionally, it provides excellent sound insulation and fire resistance.
Thus, the choice of stone wool density depends on the specific insulation and strength requirements in a construction project.
