Baltimore winters alternate between freezing nights and thawing afternoons. This cycle is brutal on skylight flashing and sealant. Water seeps into microscopic cracks in the sealant during the day, then freezes and expands at night. The expansion widens the crack. Over the course of a winter, a hairline crack becomes a gap large enough to leak during heavy rain. Skylights on north-facing roof slopes experience the most freeze-thaw damage because they stay shaded and frozen longer. This is why skylight leaks often appear in late winter or early spring after months of freeze-thaw stress.
A Plus Roofing Baltimore has worked on skylights in every Baltimore neighborhood, from the historic rowhouses in Federal Hill to the modern construction in Harbor East. We understand the roofing styles and structural quirks of each area. Baltimore roofing contractors who specialize in skylight repairs are rare. Most roofers avoid skylight work because it requires precision and accountability. We built our reputation on solving the problems other contractors would not touch. When you call us, you are working with a local crew that knows your roof type and has fixed hundreds of leaking skylights in similar homes.