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Garage doors that are not insulated can be a major source of heat loss. That’s why it’s essential to winterize your garage door with insulation and weather stripping to prevent heat loss and keep it warm more easily. Consult a local garage door installer if you need help determining the cause of your garage losing heat.

The average cost to install a new garage door is around $1,224, with most homeowners paying between $755 and $1,696. However, the total price can range from $250 to as high as $4,500 depending on several factors. Key cost drivers include the door's size, type, style, and material. For instance, wood or wood composite doors are typically more expensive than vinyl or aluminum options. Insulation also affects the price. Labor costs are often bundled into the total price, but if billed separately, can range from $200 to $500. Due to the complexity and danger, professional installation is recommended.

A garage counts toward the official square footage of a house if it is considered livable space. For a garage to qualify, it typically needs to be attached to the home and have permanent finishings like proper insulation, finished walls, and ceilings. It must also be livable year-round, which requires adequate heating, cooling, and ventilation. The exact legal requirements for what constitutes living space can vary by location.

Faux wood garage doors provide the best insulation for garages. This style is commonly insulated with polyurethane foam—a thermal conductor—that retains heat and keeps you and the inside of your garage warm.