Why Upper Saddle River roofs wear the way they do
Northern New Jersey gives a roof no easy season. Summer here is hot and humid, and the heat that builds in an unvented Upper Saddle River attic bakes asphalt shingles from below while the sun cooks them from above. Then the storms arrive. The fast afternoon thunderstorms that roll across Bergen County in July and August drive rain sideways into anything that is not flashed tight, and the nor'easters that come later in the year stack heavy, sustained rain on top of real wind. A roof that has been quietly aging all summer suddenly has to shed a serious volume of water under genuine wind pressure, and that is the moment the weak points give way.
Winter brings the slowest and most destructive force of all. When snow sits on an Upper Saddle River roof and the attic underneath is warm, the snow melts, runs down to the cold eave, and refreezes into an ice dam that backs water up under the shingles. The same freeze-thaw cycle that builds those dams also works on every small crack and gap, prying it open a little wider with each cold snap. The leak that finally appears in February was often created by a brittle flashing detail the previous August. This is why we are so insistent on inspecting before the cold sets in, while there is still time to seal the vulnerable spots before water and ice ever find them.