Casa A, Somió, Gijón: single family home certified as PHI Low Energy Building by Praxis

This single-family home is located in Somió, Gijón, Asturias, Spain, and was designed by
Architect Juan Ignacio Corominas, and certified as a PHI Low Energy Building by Oliver Style
from Praxis. Patricia Borràs was the Passivhaus Designer on the project.

Casa A, Somió, Gijón: single family home certified as PHI Low Energy Building by Praxis

This single-family home is located in Somió, Gijón, Asturias, Spain, and was designed by
Architect Juan Ignacio Corominas, and certified as a PHI Low Energy Building by Oliver Style
from Praxis. Patricia Borràs was the Passivhaus Designer on the project. Outer walls have 12cm
of external insulation fixed to 24cm honeycomb brick, U = 0.208 W/m2·K. The roof has 28cm of
XPS thermal insulation, U = 0.117 W/m2·K. The walls to ground of the heated basement have
8cm of insulation, U = 0.437 W/m2·K. The suspended floor slab has 15cm of insulation, U =
0.137 W/m2·K.

Window frames are Passivhaus certified Cortizo COR-80, Uf = 0.94 W/m2·K, with low-e argon
filled with triple glazing, Ug = 0.50 W/m2· K and g= 49%. Exterior roller blinds on all windows
control summer solar heat gains. A 9.2 kW Baxi PBM 10 air-source heat pump provides
underfloor space heating, as well as generating domestic hot water. A Passivhaus certified
ventilation unit, Aldes InspirAIR Side 240, provides controlled mechanical ventilation. The
Blower Door test result was N50 = 0.89 ren/h.

Pictures: Juan Ignacio Corominas

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