The main reason most people insulate a garage door is because they spend so much time in there. Be it woodworking, automotive tinkering or lifting weights on a home gym. Making sure the space stays at a comfortable temperature is important for these tasks, and garage door insulation is a great way to insure the climate inside is perfectly maintained.
Garage door insulation has a dual purpose; it prevents heat from escaping out of the garage, which reduces energy costs during the winter. It also prevents heat from penetrating the garage door, keeping the garage cooler during the hotter months.
While you can buy a pre-insulated garage door, a separate three-layer Insulation kit is a viable and cost effective alternative to buying a ready insulated door. Made from a compact and highly efficient insulation wadding and foil laminated on both sides, this insulation makes a noticeable difference to your garage temperature.