6 Proven Ways to Stop Patio Door Frost
I get calls every winter from Manitoba homeowners frustrated with their patio doors. The slider freezes shut in the track during polar vortexes, forcing them to chip ice at -30°C just to let the dog out or grab deck furniture. Come spring thaw and summer storms, it jumps rails, leaks water inside, and lets humid air plus bugs infiltrate despite constant weatherstripping patches.