Small Strips, Big Consequences: How Flashing Quietly Decides Whether Your St. Catharines Roof Leaks
Most Niagara homeowners assume shingles are what keep the water out. In reality, the thin metal flashing around chimneys, skylights, and valleys does most of that work — and it's usually the first thing to fail. Here's how to spot trouble from the ground and what proper installation should look like.