有缝,水往低处流,所以要防止水沿缝隙下滲。靠近铝盖的地方shingle下要稍微垫高,上面铝盖扣上后缝隙再用那种黏糊糊的柏油再封住。
有缝,水往低处流,所以要防止水沿缝隙下滲。靠近铝盖的地方shingle下要稍微垫高,上面铝盖扣上后缝隙再用那种黏糊糊的柏油再封住。
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