--- title: Insulated Garage Doors url: "https://www.lga-garagedoor.com/install-replace/insulated-garage-doors" date_modified: "2026-08-07T14:02:32-05:00" --- R-value overview ## Compare insulation levels by R-value. R-value measures resistance to heat flow through the door section. The right target depends on how the garage connects to the home, what faces the afternoon sun, and how much comfort matters inside adjacent rooms. Good ### R-6.3–6.5 #### Detached garages and storage A practical step up from a non-insulated door when strength, quieter operation, and basic thermal resistance matter. Better ### R-12.9 #### Attached garages with moderate exposure Balanced insulation for garages that share a wall with the home or see regular daytime use. Texas sweet spot High performance ### R-18.4 #### Most attached garages A strong Texas starting point for hot exposures, rooms beside or above the garage, and homeowners who value quieter operation. Maximum ### R-20.4 #### Premium comfort and demanding exposures The highest Clopay door-section R-value for projects where thermal performance is the leading priority. Thermal comparison ## What thermal imaging can reveal. These images show surface-temperature patterns before and after insulated-door installation. Conditions, camera scale, sun exposure, seals, and the rest of the garage envelope all affect results. ### Before: standard 16 × 7 door Brighter areas reveal warmer surface temperatures across the garage-facing side of the door. ### After: insulated 16 × 7 door The more even color pattern shows reduced surface-temperature variation under the captured conditions. Product lines organized by R-value ## Clopay product lines organized by R-value. Use R-value to narrow the field, then compare architecture, materials, windows, finish, wind-load options, and installed cost. Maximum ### R-20.4 **2-inch Intellicore polyurethane insulation** - [Canyon Ridge 5-Layer](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-canyon-ridge) - [Canyon Ridge Carriage House 5-Layer](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-canyon-ridge) - [Canyon Ridge Modern](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-canyon-ridge) - [Reserve Wood Extira](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-reserve-wood) High performance ### R-18.4 **2-inch Intellicore or comparable premium construction** - [Classic Steel Premium](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-classic-steel) - [Gallery Steel Premium](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-gallery) - Bridgeport Steel Premium - [Modern Steel Premium](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-modern-steel) - [Coachman](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-coachman) Better ### R-12.9 **1⅜-inch Intellicore polyurethane insulation** - [Classic Steel Premium](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-classic-steel) - [Gallery Steel Premium](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-gallery) - Bridgeport Steel Premium - [Modern Steel Premium](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-modern-steel) Good ### R-6.3–6.5 **Polystyrene or thinner insulated construction** - [Classic Steel Premium and Value Plus](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-classic-steel) - [Gallery Steel Value Plus](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-gallery) - Bridgeport Steel Value Plus - [Modern Steel Value Plus](https://www.lga-garagedoor.com/install-replace/clopay-garage-doors/clopay-modern-steel) More than a number ## What an insulated door can improve. The real value is the combination of comfort, sound control, strength, and a door that operates with less vibration. ### A less punishing garage Insulation slows heat transfer through the door sections, helping reduce the sharpest temperature swings. ### Quieter operation Insulated sections dampen vibration and reduce the hollow, rattling sound common to thin steel doors. ### A stronger door Three-layer construction adds an interior steel skin for greater rigidity and a finished garage-side appearance. ### Smarter energy use A better door supports the rest of the garage envelope when walls, ceilings, ducts, and seals are doing their part. The honest energy answer ## The door is one part of the garage envelope. R-value is important, but comfort depends on the complete boundary between the garage, outdoors, attic, and conditioned rooms. **An honest recommendation considers all of these pieces before treating a bigger number as the whole answer.** ### The garage door Section insulation, windows, joints, bottom seal, and perimeter weatherstripping all affect performance. ### Shared walls and ceiling Insulation between the garage and living space often matters as much as the door itself. ### Attic or room above Ceiling insulation and attic ventilation shape how much garage heat reaches the floor above. ### Air and duct leaks Gaps, penetrations, and unsealed ductwork can undermine an otherwise well-insulated door. Insulated garage door FAQs ## Questions about insulated garage doors. Clear answers about R-values, Texas heat, windows, retrofit insulation, and Intellicore construction. Houston · Austin · Sugar Land ## Find the right insulated door—not just the biggest number. Tell us how the garage connects to your home, where it gets the most sun, and what you want to improve. We’ll help compare the right construction, R-value, and Clopay collections. [Request an estimate](https://www.lga-garagedoor.com/contact/request-a-quote) [Call 713-858-8000](https://www.lga-garagedoor.com/contact/request-a-quote) Compare related options ## More garage door options Explore door availability, insulation, wind requirements, installation, and replacement options. [In-Stock & Same-Day Garage Door Installation](https://www.lga-garagedoor.com/install-replace/in-stock-same-day-garage-doors) [Wind-Rated & Hurricane-Rated Garage Doors](https://www.lga-garagedoor.com/install-replace/wind-rated-hurricane-garage-doors) [Garage Door Installation](https://www.lga-garagedoor.com/install-replace/garage-door-installation) [Garage Door Replacement](https://www.lga-garagedoor.com/install-replace/garage-door-replacement)