ZED Lab, a Delhi based, research-driven and interior design studio specialising in net-zero energy buildings since 2009 have recently completed House Under Shadows. This prominent near net-zero residential structure achieves reduced solar direct and diffused radiation by 65% through digital modelling using parametric and passive design strategies – an architectural response to the extreme weather in North India.
The 1672 m2 integrated double-family residence redefines the ‘Indian-Modern’ taking cues from the vernacular and from nature’s self-forming elements and patterns like Voronoi to minimise energy consumption throughout.
The design highlight is the parametrically crafted omnipresent double-roof that canopies the vast footprint of the horizontally-spread double unit structure. The Voronoi-patterned double roof is a combination of GRC (Glassfibre Reinforced Concrete) and FRP (Fibre Reinforced Polymer) with a high Solar Reflectivity Index (SRI) that results in an ephemeral play of light and shade with surprising shadows dynamic with diurnal and seasonal changes.
In proximity with Noor Mahal, the residence is a reinterpretation of the architectural language of the traditional Indian ‘havelis’ and ‘chhatris’ with courtyard enabling social cohesion, and transition spaces enabling movement, natural ventilation and daylight. Also, the unique landscaping strategy incorporates vertical greens to avoid the heat island effect and facilitate evapotranspiration to maintain the microclimate of the residence.
