ELD can be used at almost any point during the life of a roof. Likewise, leaks can occur at any point during the life of a roof. The most common time for ELD to be utilized is immediately after roof construction is completed. This ensures that the assembly is watertight before the installation of overburden and/or building turnover. However, it can also be used in the weeks, months, and years after completion, as a response to active leaks or potential damage caused by new construction activities on the roof. As the cost of materials and labor have increased in recent years, ELD has also been used as a maintenance tool in an effort to prolong the life of the roof.
