Two options can be considered when a new roof is needed on an existing building: completely remove and replace all existing roofing materials (replacement), or install a new one over the existing roof (re-cover).
Each project is unique, but there are some common mistakes, problems, and inefficiencies that occur on a regular basis, affecting the cost, schedule, or performance of building enclosures. Understanding material qualities and resultant performance is the core of good masonry construction.
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