Figure 2.6: House insulated with 20mm VIP encapsulated in 20mm EPS which were attached by a rail system (Photo: Zwerger and Klein, 2005)
Figure 2.7 shows a gable wall of an existing house was retrofitted using VIPs. The project is done in 2000 in Nuremberg, Germany. The system for attaching VIPs was based on a system called rail system. The 15 mm VIPs were integrated between 35mm thick horizontal plastic rails that were fastened in an 35mm EPS layer [19]. The U-value of the wall was improved from 0.7 to 0.19 W/m2K.
Figure 2.7: A building retrofitted on the exterior with 15mm VIP using a special plastic rail system (Photo: ZAE Bayern)
VIPs are interesting to use in floors where the thermal resistance requirements are high, and construction thickness is limited. VIPs can be used to increase efficiency of roof heating system if the system is used in the building. Figure 2.8 indicates a floor is insulated
8