Garage Door Installation - we know anything about it! For example when choosing a garage door you’ll want to consider a number of factors. Is the garage door sturdy and sealed with any protective coating? Sun, rain, wind and cold environments can wreak havoc on a garage door’s exterior. Before your garage door installation, you’ll also want to check out how much insulation is used on the inside of the garage door. Garage door insulation is rated in the industry with a specific R-value. A higher R-value for the insulation indicates thicker padding and a warmer home during winter months. Does the door have tight seals on the sides and the bottom? Air leaks around these edges are a major factor in any loss of home energy efficiency which would otherwise be keeping your house warm in the winter and cool in the summer.