Why do roof tiles crack or slip, and how serious is the problem?

Chimney stack and clay pots installation by roofing company in Woking

A cracked roof tile can seem like a minor annoyance, particularly when there is no obvious leak inside the house. A slipped tile may look like something that can wait until the weekend. Yet the roof is a system where one small weakness can leave the layers beneath exposed to rain, wind and frost. Knowing […]