Betektect Siyam Insulation Board is a carbonized polystyrene-based thermal insulation plate that is produced in line with TS EN 13163 Insulation Materials Standard.

- Thermal conductivity coefficient of λD = 0.032 W/mK.
- High water vapor permeability (µ=20-40). Prevents humidity, moisture and mold in structures.
- Ability to stand all mechanical loads in structures. Prevents the formation of plaster, paint and coating cracks resulting from expansion, shrinkage and wall wearing.
- Reaches perfect size balance by resting after production according to the standards and has no risk of size/angle shift in time.