Insulation R-Value Explained: What Every Homeowner Should Know
2024-01-05 7 min read
When shopping for an insulated garage door, you'll encounter the term "R-value" repeatedly. Understanding what this number means can help you make a smarter investment and save money on energy costs.
What is R-Value?
R-value measures a material's thermal resistance—its ability to resist heat flow. The higher the R-value, the better the insulation.
R-Values for Garage Doors
Garage door R-values typically range from R-0 (no insulation) to R-18 or higher:
R-0 to R-6: Non-Insulated to Light Insulation
- Single-layer steel or aluminum doors - Best for detached garages in mild climates
R-8 to R-12: Moderate Insulation
- Double-layer construction with polystyrene insulation - Good for attached garages with noticeable energy savings
R-13 to R-18+: High Insulation
- Triple-layer construction with polyurethane insulation - Maximum energy efficiency, ideal for workshop spaces
Our Recommendation
For most Brazoria County homeowners with attached garages, we recommend R-12 or higher. The investment pays off through lower energy bills, increased comfort, quieter operation, and longer door lifespan.
Need help choosing the right insulated door? Contact us for a free consultation.