What are the key performance indicators for insulation materials?
2025-08-15
It must withstand temperature fluctuations, UV radiation, weathering, and more, ensuring consistently reliable thermal performance over the long term (typically requiring a service life that matches the building’s main structure—around 25 to 50 years).
Key Performance Indicators
- Thermal conductivity : The core metric for evaluating thermal insulation performance—lower values indicate better insulation (typically required to be ≤0.06 W/(m·K)).
- Fire resistance rating : According to GB8624-2012, materials are classified into Grade A (non-combustible), Grade B1 (flame-retardant), Grade B2 (combustible), and Grade B3 (highly flammable). Building exterior wall insulation typically requires materials of Grade B1 or higher.
- Water absorption rate :The lower, the better—this prevents the material from absorbing water and increasing its thermal conductivity, which could compromise the insulation performance.
- Compressive strength : Load-bearing areas such as floors and roofs require careful attention to ensure that materials remain deformation-free under load.
- Durability : Must withstand temperature fluctuations, UV radiation, weathering, and more, ensuring consistently stable long-term thermal performance (typically requiring a service life that matches the building’s main structure—around 25 to 50 years).
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