Missouri gets both extremes — humid triple-digit summers and sub-zero wind chills. If your garage is attached to your home, the door's insulation level directly affects your comfort and energy bills year-round.
Understanding R-Value
R-value measures resistance to heat flow. A basic single-layer steel door has an R-value near zero. Insulated doors range from R-6 (polystyrene) to R-18+ (polyurethane sandwich construction). For attached garages in our climate, we recommend R-12 or better.
The Real-World Benefits
- Temperature control. An insulated door can keep a garage 20°F warmer in winter and 15°F cooler in summer.
- Lower energy bills. Less heat transfer through the garage means your HVAC works less, especially for rooms above or beside the garage.
- Quieter operation. Insulated doors are more rigid and run noticeably quieter.
- Durability. The sandwich construction resists dents far better than single-layer steel.
When It's Not Worth It
Detached garages used purely for parking don't benefit as much — a well-sealed standard door may be all you need.
Straight Up Garage Doors installs insulated doors from top manufacturers across the St. Louis metro, backed by a one-year warranty on parts and labor. Call (314) 788-1106 for a free estimate.