前面VanSmallLandlord已经答了,是panel metal roof。其优点嘛,请看

ztToday's metal roofs offer the following advantages:

  • Metal roofs are lightweight--less than 1/3 the weight of asphalt and one twentieth the weight of concrete.
  • A metal roof won't rot, crack, crumble, split, break or burn.
  • Metal roofs are made from recycled steel and aluminum material and are 100 % recyclable.
  • Metal roofs have coatings that prevent 75 to 80 percent of the sun's energy from being absorbed into the roof.
  • A metal roof can reduce roof surface temperatures by 60 to 70 degrees.
  • Metal roofs are available in a wide variety of styles and custom colors.
  • Metal Roofing is durable and maintenance free.
  • A Metal Roof increases a building's value.
  • Metal Roofing is an ideal platform for integrating solar electric and solar thermal renewable energy solutions.
  • A Metal Roof can earn up to 25 U.S. Green Building Council LEED credits

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价钱比传统的其它Roof都贵,贵多少我没调查过。一般是 -如山- 给 如山 发送悄悄话 如山 的博客首页 (53 bytes) () 12/24/2012 postreply 20:26:53

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