Material choice drives every other decision — price, lifespan, insulation, sound, maintenance, looks. Four families dominate residential garage doors, plus a fifth for commercial. Here's how to choose.
Steel — the bestseller
Galvanized steel skin over a polyurethane or polystyrene insulation core. 25-gauge or 24-gauge. Powder-coated or pre-painted finish, occasionally faux-wood textured. About 70% of new residential doors. Cheap, durable, low-maintenance, paintable, dent-resistant in 24-ga.
- Lifespan: 20–30 years with care
- Insulation: up to R-18 (3-layer with polyurethane core)
- Maintenance: rinse with hose annually, repaint every 10–15 years if scratched
- Best for: most homes, most climates
Aluminum and glass — the architect's choice
Aluminum frames with tempered, frosted, tinted, or insulated glass. Lightweight, premium look, lots of natural light. The downside is heat transfer — even with insulated glass, an aluminum-glass door has worse R-value than a 3-layer steel.
- Lifespan: 25–40 years
- Insulation: poor compared to steel; insulated glass helps
- Maintenance: glass cleaning, anodizing typically maintenance-free
- Best for: modern, contemporary, mid-century homes; mild climates
Wood — the prestige choice
Real cedar, hemlock, mahogany, or oak. Hand-built, custom-designed, warmth no other material can match. The cost is — wood. It moves with humidity, needs refinishing every 3–7 years, and a poorly-spec'd wood door warps in the first season.
- Lifespan: 30–50 years with maintenance
- Insulation: lower than insulated steel by default
- Maintenance: refinish every 3–7 years; check for water infiltration annually
- Best for: custom homes; climates with stable humidity
Composite (accoya / fiberglass / WPC)
Engineered wood-look materials. Accoya is acetylated lumber — real wood that's been chemically modified to resist rot and movement. Fiberglass is glass-reinforced polymer with a wood-grain finish. Both look like wood at 20 feet, last like steel at 30 years, and cost between the two.
- Lifespan: 30+ years
- Insulation: comparable to insulated steel
- Maintenance: minimal; occasional cleaning
- Best for: wood-look without wood maintenance; humid climates