Insulating your garage door can significantly improve energy efficiency, reduce noise, and make your garage more comfortable year-round.
Benefits of Garage Door Insulation
- Energy Savings – Reduces heat transfer, lowering heating and cooling costs
- Noise Reduction – Dampens street noise and makes the door quieter
- Door Longevity – Protects against temperature extremes
- Increased Comfort – Makes attached garages more livable
Types of Insulation
Polystyrene (Foam Board) – Rigid panels with R-value of 3.6-4.4 per inch. Affordable and easy to install.
Polyurethane (Spray Foam) – Expands to fill gaps, R-value of 6.0-6.5 per inch. More expensive but superior performance.
DIY Installation Steps
- Measure each door panel accurately
- Purchase insulation kit or cut foam boards to size
- Clean door panels thoroughly
- Apply adhesive or use retaining clips
- Press insulation firmly into place
- Seal edges if needed
R-Value Recommendations
- Detached unheated garage: R-4 to R-8
- Attached garage: R-8 to R-12
- Heated garage/workshop: R-12 to R-18
For best results, also weatherstrip around the door and add a bottom seal to maximize energy savings.
