Cal Gall/
Sau Taller d'Arquitectura
Project Details
Location(City/Country):
Bellver de Cerdanya, Lleida / Spain
Tipology:
Residential
Year (Design/Construction):
- / 2024
Area (Net/Gross):
- / -
Operational Carbon emissions (B6) kgCO2e/m2/y:
-
Embodied Carbon emissions (A1-A3) kgCO2e/m2:
-- Existing stone walls are combined with new timber structures, plywood panels, and dry construction systems, optimising resources and reducing the carbon footprint.
- The high groundwater level is utilised with geothermal wells and underfloor heating, maximising the thermal inertia of the stone walls and reducing energy consumption.
- The orientation of spaces and the introduction of new openings in the stone walls enable efficient cross ventilation, enhancing thermal comfort without relying on mechanical systems.
- The new roof incorporates 28 cm of rock wool insulation, minimising heat loss in winter and preventing overheating in summer.
The house and farmhouses of Cal Gall, built in the 19th century, have been transformed by Taller SAU
and reinvented with the aim of promoting the family’s heritage.
Four spaces are organised around the courtyard: from bottom to top and from south to north. On the
ground floor we find the day area, connected to the outdoor space while the upper floor serves as the
night time area. To the south, the main rooms (living room and bedrooms) benefit from solar radiation,
and to the north, the staircase and bathrooms act as a thermal cushion and bring together the facilities.
The wooden structure of the new floor slab and the new roof reinforce the stone walls and strengthen the ensemble of buildings. Traditional construction is combined with the new systems of plywood and dry construction.
Taking advantage of the high groundwater level, the whole complex is heated through a system of
geothermal wells and underfloor heating, which guarantees the use of the thermal inertia of the stone
walls and provides hot water in an almost natural way. Furthermore, the new roof, with 28 cm rock wool insulation, and the cross ventilation provided by opening new openings in the stone walls, allows the building to perform exceptionally well in both summer and winter with a minimum of external energy input. This is a clear commitment to low energy consumption.
- Photography: Andrés Flajszer
