ABRI points out that most Taiwanese buildings lack roof insulation. They just have a layer of whitewash and waterproofing. Because rooftops on average get two to three times more exposure to the sun than vertical walls, top-floor residents have to contend with poor quality residential environments and tend to consume too much energy.
建研所表示，台灣建築物普遍缺乏屋頂隔熱，只在屋頂加一層粉刷及防水層，而屋頂的平均日照量是牆壁立面的 2 到 3 倍多，使得頂樓居住品質不佳、耗能量可觀。