Barrie’s position on the shores of Lake Simcoe creates a distinct environment for residential roofs. Homes can experience lake-effect snow, strong winds, heavy precipitation, summer humidity, and sharp temperature changes throughout the year.
Winter is particularly demanding. Snow accumulation adds weight to the roof, while cycles of warming and refreezing can move water into vulnerable areas. Ice buildup near eaves can also contribute to water backing up beneath roofing materials.
During warmer months, rain and humidity create another source of moisture exposure. If ventilation is inadequate or flashing has deteriorated, moisture can reach the wooden decking and remain trapped.
These problems are especially important for older homes in established neighbourhoods such as Allandale, Letitia Heights, Sunnidale, and Codrington, where roofing systems may have already endured decades of seasonal exposure.