After repair work to underlying flashings and gutters, some contractors don’t pay attention to these critical dimensions. The result is a slate roof that is more susceptible to water infiltration. Knowing what to look for is critical, as headlap and offset problems can be easy to overlook, especially if observations are made from a distance.
In this WJE Primer article, Jeffrey Levine discusses the critical dimensions for slate headlap and offset.
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Jeffrey S. Levine, Associate PrincipalWJE Philadelphia MORE >People | Jeffrey S. Levine, Associate Principal