Boston experiences an average of 40 to 50 freeze-thaw cycles each winter. Daytime temperatures climb above freezing while nighttime lows drop into the teens. This daily cycling causes water trapped behind your chimney to freeze, expand, and force open flashing seams. By March, even a small gap in your chimney saddle flashing becomes a major leak. Add in the heavy snow loads common across Greater Boston, and you have the perfect conditions for roof saddle drainage failure. Homes in neighborhoods like Roslindale, West Roxbury, and Mattapan built before modern ice dam protections are especially vulnerable because their crickets were undersized or never installed at all.
Boston roofing contractors must understand Massachusetts building codes for ice and water shield application and flashing details around chimneys. The state requires continuous ice barrier coverage in areas prone to ice damming, which includes all chimney crickets and valleys. Many out-of-state or inexperienced roofers skip these steps to save time. Silverline Roofing Boston follows these codes and applies best practices developed over years of working on triple-deckers, Colonials, and historic homes across the city. Choosing a local roofer who knows these requirements means your cricket repair will pass inspection and perform correctly for decades.