Passive shading techniques help keep homes and terraces cool during heat waves

Experts advise homeowners to use passive cooling measures rather than rely solely on air‑conditioning, which consumes large amounts of energy. During a heat wave, timing the lowering of shutters or blinds according to a building’s orientation can significantly reduce indoor heat gain. East‑facing rooms benefit from early‑morning shading, while south‑facing windows may need shade from late morning through the afternoon. External shading devices such as shutters, blinds, external screens or awnings block solar radiation before it enters the windows, limiting the heat stored in walls, floors and furniture.

For outdoor terraces, designers recommend planting shade‑giving vegetation. Large‑leaf plants, vines on pergolas, and trees provide both shade and evaporative cooling as water evaporates from their leaves, lowering the surrounding micro‑climate. Species such as Trachelospermum jasminoides, lilac, climbing roses or grape vines are highlighted for their rapid growth and dense foliage. Grouping several plants together maximises the cooling effect and extends comfortable outdoor use even on the hottest afternoons. These passive strategies are presented as more energy‑efficient ways to combat increasingly frequent summer heat waves.