Flat roofs—gutters

box gutters waterproofing decks Flat metal roof with 20 year warranty “Twenty-year material warranties are customary for metal roofing systems, which is considerably longer than the standard protection for built-up and single-ply systems. Long-term warranties are sometimes offered for weathertightness on metal roofs, including those with a 1/4:12 slope.” “Metal standing seam roofs are …

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