Roof insulation refers to all sorts of materials placed on rooftops to effectively protect a building from the heat of the sun, including insulating bricks, roof pergolas and gardens, and airspace in ceilings.
對種種問題，建研所已出版《外遮陽暨屋頂隔熱設計參考手冊》給相關專業工作者和一般民眾，希望加速把技術推廣出去。「屋頂隔熱」指的則是在屋頂運用各種方式把太陽熱有效的阻隔，比如鋪設隔熱磚、屋頂花架、花園，加設天花板並留空氣層等等。