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The Passivhaus External Wall System is a lightweight steel system, designed by Knauf GmbH Sucursal en España, Knauf Insulation S.L., and SIGA, comprising Knauf 100/50 mm steel C-sections and Knauf 48/35 mm steel C-sections filled with Knauf Insulation Ultracoustic 035 (0,035 W/mK) and closed with Knauf Gypsum board between cavities, double Knauf Gypsum board internally and Knauf Aquapanel Outdoor Board externally. The system is further insulated externally with 160mm of Knauf Insulation Naturoll 032 (0,032 W/mK), fixed with steel angles to Knauf Aquapanel Outdoor Board; these also function as fasteners for a rainscreen facade. The system is to be used with a reinforced concrete floor slab, insulated to the underneath with rigid XPS insulation (0,035 W/mK) and internally with Ultracoustic Suelo TP by Knauf Insulation (0,037 W/mK); the roof deck is a flat reinforced concrete slab, insulated to the outside with Knauf Naturoll 032. The system has undergone analysis by the Passive House Institute against the thermal performance criteria for construction systems, and has been deemed suitable for the construction of passive houses in both warm-temperate and warm climates. The ceiling connection does not meet the efficiency criteria of <0,01 W/mK, however this is typical for such details and, because the hygiene criterion is met, the system has been deemed certifiable. |
