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www.liang 发表于 2012-3-5 02:12
应该是沥青瓦,最开始是美国的,质量没什么问题
"Decramastic". Pitch over 15 deg. It consisted of pressed metal sheets covered in a bitumen compound with embedded stone chips.
For our conditions a really crappy roof covering. Most hot days, you cannot walk on the roof without the surface sliding under your feet. (The bitumen gets soft).
The batten set out has to be spot on. No tolerance.
You must, repeat MUST walk on the battens.
I have seen a trail of bent and distorted tiles leading from the eaves, over the ridge to a new solar hot water system. The plumbers that fixed it had no idea of the roof surface, or didn't care. |
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