vernacular stone cabin in northern spain gains a renewed layered inner envelope

"What was once a ruined rural has been carefully rehabilitated by Estudio Mínima into an EnerPHit-certified , demonstrating that the highest standards of energy efficiency can be achieved without altering the identity of vernacular architecture. The intervention preserves the original volume, the thick dry- masonry walls, the pitched roof, and the traditional external stone staircase, concentrating all transformation within the ."

"A new high-performance inner envelope is constructed as a layered second skin, with organic insulation, brick, and lime plaster, applied against the existing 80 cm stone walls. This strategy dramatically improves thermal performance while maintaining the building's exterior presence and material authenticity. The energy system is completed with mechanical ventilation with heat recovery and an integrated heat pump, ensuring constant air quality and minimal energy consumption throughout the year."

"A small wood stove provides occasional supplementary heating during colder periods, while triple-glazed timber windows maintain visual continuity with the landscape and reduce heat loss. All technical systems are fully integrated and concealed, allowing the spatial experience to remain defined by silence, stability, and material clarity."

"Material choices reinforce the logic of continuity and proximity: lime plaster, local oak wood, reclaimed stone, and ceramic elements define a restrained palette that connects the intervention to its context. Rather than imitating the existing structure, the pr"

A ruined rural structure in the Pasiego Valleys in Cantabria was rehabilitated into an EnerPHit-certified home while preserving the original volume, thick dry-masonry walls, pitched roof, and traditional external stone staircase. Transformation was concentrated inside the existing shell through a high-performance inner envelope built as a layered second skin. Organic insulation, brick, and lime plaster were applied against the existing 80 cm stone walls to improve thermal performance without changing the exterior presence or material authenticity. Mechanical ventilation with heat recovery and an integrated heat pump provide year-round air quality with minimal energy use. A small wood stove offers supplementary heat in colder periods, and triple-glazed timber windows reduce heat loss while maintaining visual continuity. Technical systems are fully integrated and concealed to keep the interior defined by silence, stability, and material clarity.

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