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Installing weather stripping or upgrading to insulated panels can improve efficiency.

Garage door freezing is prompted by snowfall and freeze/thaw cycles instead of the temperature. If you get a lot of moisture around the garage door, whether from rain or melting snow, and temperatures quickly drop below freezing (32 degrees Fahrenheit) at night, that’s a recipe for a frozen garage door. Winters with steep temperature drops overnight are more likely to create this problem, especially low temperatures to sustain a freeze, so weather in the lower 20s is a common culprit.

Wood, steel, fiberglass, and aluminum are among the top building materials for a garage. Wood is highly customizable, naturally insulative, and durable in mild climates but can be expensive. Steel is lightweight, low-maintenance, and cost-effective, but it’s susceptible to rust. Fiberglass is low-maintenance and doesn’t shrink or expand in changing temperatures, but it can become brittle and crack from prolonged high winds and sun exposure.

Unlike steel, aluminum isn’t susceptible to rust and is low-maintenance, but its ultra-light weight makes it less durable than some materials, and it’s susceptible to saltwater damage, making it a poor choice for coastal homes.

Most heat in a garage is lost through air leaks in windows, doors, and walls. This is especially true if the walls are uninsulated, which is common in garages. Consider insulating your garage before installing a garage heater to ensure the heat it generates isn’t wasted, making it less efficient.