double coverage

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

不可算名詞

(roofing) Application of asphalt, slate, or wood roofing such that the lapped portion is at least two inches wider than the exposed portion, resulting in two layers of roofing material over the deck.

このボタンはなに？

The inspector noted that the roof's double coverage increased protection against leaks but added extra weight to the deck.

詳細

意味（1）

(roofing) Application of asphalt, slate, or wood roofing such that the lapped portion is at least two inches wider than the exposed portion, resulting in two layers of roofing material over the deck.