Insulation rock wool board materials should be selected based on the local climate and temperature conditions. For instance, in some cold areas in the north, it is advisable to choose insulation rock wool board materials with better thermal insulation properties, such as polyurethane foam board. In regions with smaller temperature differences, materials like glass beads for thermal mortar can be selected.

Thermal Conductivity
Under the condition of meeting the thermal insulation effect, it is recommended to prioritize the use of thermal insulation rock wool board materials with a low thermal conductivity coefficient. This not only meets the design requirements but also facilitates construction, reduces transportation costs, and occupies less space.
3. Stability
The selected insulating materials should possess excellent chemical stability.
4. Mechanical Strength
The exterior thermal insulation rock wool board material should be capable of withstanding certain loads and external force impacts.
Value for money
Compare the unit thermal resistance prices of exterior wall insulation mineral wool board materials and choose the one with a relatively lower price.
6. Flame Retardant Agent
In areas with high fire safety requirements in building structures, flame-retardant thermal insulation mineral wool boards and inorganic thermal insulation mineral wool boards should be prioritized.
7. Absorption Rate
Insulation boards made of rock wool have higher thermal conductivity when they absorb water. Therefore, it is advisable to choose materials with low water absorption or non-absorbent rock wool for insulation, to prevent an increase in thermal conductivity due to water absorption in the insulation boards.
8. Low-density
Low-density exterior wall insulation mineral wool boards can reduce load and facilitate construction.
9. Constructability
Insulation board materials for exterior walls should feature ease of construction, simple operation, and easy quality assurance. For instance, thermal insulation mortar materials can be applied by simply adding water on-site and mixing them thoroughly.
10. Service Life
Insulation boards made of mineral wool for building facades are constantly affected by the freeze-thaw cycles of nature. Over time, the physical properties of the insulation boards will inevitably degrade, leading to a decrease in energy-saving efficiency. Therefore, it is crucial to choose materials with stable physical properties and resistance to aging. High-quality insulation boards ensure optimal energy-saving effects and prolong the service life.