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    Common Commercial Roofing Leak Sources

    Common Commercial Roofing Leak Sources

    Commercial Roofing Leaks

    Having worked on thousands of roofs over the past thirty years, I have come to realize that water, in whatever form has a way of finding the weak point in your roofing. Any experienced roofer will acknowledge that his goal is not only to install roofs that maintain their integrity throughout the wear and tear of the elements, but to ensure that water does not penetrate even at the weakest point.

    Most roofing leaks are fairly straightforward in solving, what is less clear is finding the cause of the leak. Usually when we are called in the customer will point out the most visible point of the leak and therefore assume that that is where the origination point is. Typically that is not the case. Water may travel down a rafter or condensation may be the problem. Many plumbing, heating and cooling ventilation problems are overlooked as a common cause of the leak. I have been in this situation many times and below is the most common sources of roof leaks whether commercial or residential:

    Cracked, loose or missing shingles, tiles or seams
    Severely damaged seals, flashing and calking
    Improper insulation
    Ponding water, typically on low slope roofs
    Improper installation of flashing, valleys, shingles, collars, etc.
    Ice dams
    Built up debris trapping moisture
    Exposed nail heads

    There are many more sources that may be unique to types of roofing and the weather environment.It is always best to work with a roofing contractor that has experience with your type of roofing system.

    Andy Maus
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