How to Improve Garage Door Energy Efficiency

If you have an attached garage, your garage door has a significant impact on your home's energy efficiency. Here's how to improve it: 1. Upgrade to an Insulated Door If your current door is uninsulated, replacing it with a door rated R-12 or higher is the single biggest improvement you can make. 2. Replace the Bottom Seal The rubber strip at the bottom of the door is your first line of defense against drafts. If it's cracked or stiff, replace it. Cost: $20-$50. 3. Check and Replace Side Weatherstripping The foam or rubber strips on the sides and top of the frame seal the gap between the door and the frame. Check for gaps and replace if worn. 4. Insulate Garage Walls and Ceiling Even a well-insulated door can't overcome an uninsulated garage. Add batt or rigid foam insulation to the walls and ceiling. 5. Add a Door Threshold Seal A rubber threshold bonded to the concrete floor creates a better seal than a bottom seal alone. 6. Fix Air Leaks Around Framing Use spray foam or caulk to seal any gaps around the door frame where it meets the wall. These improvements can reduce energy transfer through the garage by 50% or more.