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The most common garage door material is aluminum, but the best material for you depends on your budget and location. Wood is the most expensive to repair but tends to add the most curb appeal, while fiberglass or composite doors cost less to fix.

Aluminum won’t rust, so it’s a great option if you live somewhere humid or rainy. Steel doors are durable but are prone to rust. If you live somewhere with extreme temperatures, hot or cold, you might opt for fiberglass, which won’t split if the temperatures skyrocket or drop below freezing.

The level of insulation is determined by both the material and the thickness of the door. Some garage door materials (such as wood) have natural insulating capabilities, while other materials (such as metal) do not. No matter the material, two-layer and three-layer garage doors have a higher R-value than single-layer garage doors, as insulation is fitted between the panels. 

It is highly recommended to prime a metal surface, like a garage door, before painting. Primer creates a stable surface for the paint to adhere to, which helps prevent bubbling, chipping, and peeling. This ensures the paint job will last longer. Painting metal without a primer can lead to poor adhesion and allow rust to bleed through the new paint. If the surface already has rust spots, you can cover them with a zinc chromate primer before applying the final coat. While priming adds an extra step and cost, it is a worthwhile investment for a durable, long-lasting finish. For best results, also use a paint specifically designed for metal.

If you take caution around fragile garage parts, thawing methods shouldn’t cause problems. Avoid using direct sources of heat too close to the garage door, especially rubber parts.

Another spot to avoid heating is the garage door spring. This powerful metal spring can become very cold in winter. Applying heat to a cold spring increases the chances it could break.