The insulation can be made of stone wool or EPS /expanded polystyrene foam/. It is not recommended to insulate with XPS /extruded polystyrene foam/ as the material is not vapour permeable and deteriorates the microclimate in the building, leading to condensation and mould. According to the latest amendments to the Energy Efficiency Regulation N7 (from 2009), the minimum insulation thickness becomes from 5 cm to 8 cm (for EPS with a density of 16-18 kg/m3 and λ=0.032 calculated for an external wall adjacent to outside air and a heat transfer coefficient U=0.35W/m2K). For stone wool, depending on the density, the thickness of the insulation layer increases from 6 cm to 9 cm.
Thermal insulation with EPS: several types of facade EPS are used, which differ in their density and thermal conductivity λ). The sequence of the layers is:
1. Adhesive for thermal insulation
2. EPS-F Thermoren 12-14 kg/m3
EPS-F Thermoren 14-16 kg/m3
EPS-F Thermoren 16-18 kg/m3
EPS-F Thermoren 18-20 kg/m3
3.PVC dowel / dowel with nail
4. Reinforcing mesh 145 g/m2
5. Putty for thermal insulation
6. Primer, contact primer
7. Plaster
Thermal insulation with stone wool: high density wools of 130 to 150 kg/m3 are used which have sufficient mechanical strength to bear the respective loads:
1.Adhesive for thermal insulation
2.Stone wool – Izocam facade wool 140 kg/m3
3.PVC dowel / dowel with nail
4.Reinforcing mesh 145 g/m2
5.Putty for thermal insulation
6.Primer: contact primer
7.Plaster
