Garage Door System GuideRaynor and Clopay are two established steel garage door brands, and both publish detailed specs. This page lays those published numbers next to each other. It does not crown a winner, because the right door depends on your climate, budget, and which model within each line you compare.
How to read this comparison
Brand-level specs are only meaningful when you compare like models. Both brands sell a ladder from builder doors to premium polyurethane doors, so a premium door from one is not comparable to a builder door from the other. Read R-value carefully too: Raynor publishes a tested U-factor alongside a calculated R-value, while Clopay publishes calculated door section R-values, and DASMA says those are measured differently. Treat everything below as manufacturer-published figures for specific product lines.
What Raynor publishes
Raynor describes its polyurethane doors as using Foam-in-Place NeuFoam insulation that expands to fill all voids between the two layers of steel. For its Aspen AP200N, a 2-inch thick 3-layer steel door, Raynor publishes a tested U-factor of 0.17 and a calculated R-value of 18.0.
Raynor specifies the AP200N as hot-dipped galvanized 26-gauge steel with NeuFoam blown between the steel skins to fill 100 percent of the interior, and publishes a Limited Lifetime warranty on sections with 3 years on springs and windows and 5 years on the ColorWave finish.
What Clopay publishes
Clopay states its Intellicore insulation is polyurethane foam injected between the steel layers of the door. It lists Intellicore R-values reaching 20.4 on the Canyon Ridge Carriage House 5-layer 2-inch door and 18.4 on multiple models such as the Canyon Ridge Carriage House 4-layer and Coachman Premium.
Clopay offers its steel doors in one, two, or three layer construction with insulation choices of 2-inch or 1-3/8-inch Intellicore polyurethane, polystyrene, or 1-5/16-inch vinyl backed polystyrene, and states its baked-on polyester paint finishes resist chipping and rusting.
Where they differ on paper
The brands publish R-value on different bases, which is the key thing to reconcile. Raynor pairs a tested U-factor of 0.17 with a calculated R-value of 18.0 on its Aspen AP200N, while Clopay publishes calculated door section R-values reaching 20.4 on select Canyon Ridge doors. Because a tested U-factor and a calculated R-value are measured differently, the two headline numbers are not directly interchangeable.
Both brands rely on injected or foamed-in-place polyurethane for their premium doors and back sections with a limited or limited lifetime warranty. Matching specific models and confirming whether a number is tested or calculated matters more than the brand name.