但他指出，无论是屋瓦还是基于沥青材料的盖屋板，多数的屋顶的生命周期都约为20 - 25年。
But he points out that most roofs, whether tile or asphalt-shingle, have a life span of 20 to 25 years.
虽然保留了屋盖结构，但是碎石铺砌的房顶替换成常规屋顶，利用了铅锡镀不锈钢材料。
While the roof structure was retained, the ballast roofing was replaced with standing seam, terne coated stainless steel.
森林被砍伐的土地被用来种植建筑用的材料，包括用来盖屋顶的棕榈树叶和家居装修用的竹子。
Deforested lands are utilized for the growth of building materials, including palm leaves for thatch and bamboo for furnishings.
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