Exterior Window Caulking: What Actually Holds Up in Canadian Conditions
Every spring I come across windows that spent the winter working against the homeowner. The glass is fine, the lock closes tight, but somewhere around the frame there’s a gap letting cold air in or water sneak behind the trim. Nine times out of ten, the exterior caulk has given out – cracked, pulled away from the frame, or just worn thin from years of freeze-thaw cycles.