Interview with TH‑A Architects and Edith Minkner

EM: On a recent visit to one of your houses we were struck by the generous planting on the terraces and roofs. Only on the drone images did we realise how many solar panels had been discreetly integrated into the roof design.

AT: We like to bring both aspects together. The shade cast by solar panels helps soften the summer sun while at the same time generating energy. Green roofs and planted terraces are not only attractive, they also improve insulation and bring a host of additional benefits.

EM: “In the north there is no real summer, here in Mallorca there is no real winter…”

LH: The key to a comfortable and energy-efficient home is how we manage the sun, which is almost always present. We make use of it throughout the year, but in summer it is essential to protect against overexposure. In fact, more energy is consumed here for cooling than for heating – very different from what happens in northern Europe. Standards that are common there, such as triple glazing or certain external insulation systems, can actually be counterproductive or even damaging here.

EM: How do you achieve climate comfort with architectural means?

AT: It always begins with the orientation of the spaces. In our 3D models we examine how the geometry and volume of the structures, together with roof overhangs, influence solar exposure throughout the year. This way, solar gain is maximized in winter while necessary shade is ensured in summer. Equally important in this balance, are covered outdoor spaces such as porches and pergolas, conceived as a natural extension of the living area

LH: Inside, we rely on intelligent ventilation. Double‑height spaces promote the stack effect and create exciting spatial experiences. Cross ventilation can significantly reduce the need for air conditioning – often it is only required during the hottest weeks of the summer.

EM: Every house requires an energy certificate. What do you prioritise in building services?

AT: Efficiency depends on properly organizing all the equipment while at the same time integrating it invisibly into the design. Solving this apparent contradiction – maximum comfort without increasing consumption – requires a great deal of experience. It is also essential to plan from the outset for the space these installations require.

LH: In Mallorca it is relatively easy to achieve very low heating consumption, and heat pumps or ventilation systems with heat recovery can contribute to this. However, there are significant differences in energy efficiency and space requirements, aspects that should be considered from the very beginning of the planning process. With smart energy management, both the design and operation of the systems – as well as construction and operating costs – can be optimized.

EM: Which further aspects of sustainability do you integrate into your design?

AT: Water management is also key. A Mediterranean garden with green terraces is based on the selection of native species. With well-dimensioned water tanks and automated, intelligent irrigation systems we can significantly reduce consumption.

EM: In the end, is it about being able to enjoy the property without concerns?

AT: Exactly. Even in houses that are not inhabited year-round, we design the systems to operate in a stand-by mode: a minimum setting that maintains proper ventilation and temperature using solar self-consumption, with no additional cost, and that can also be controlled remotely. This way, when the owners arrive, they always find the home in optimal condition and ready to use.