Double-door sizing and cost
The most common two-car door is 16 feet wide by 7 feet tall, though 16x8 and 18x7 sizes are widely available for larger vehicles and wider bays. Width is the main driver of material cost, while height and headroom affect the track and spring setup.
For a standard 16x7 insulated steel door, expect $1,400 to $2,800 installed. Wider 18-foot openings add roughly ten to fifteen percent because of the extra panel width and heavier-duty spring and strut requirements needed to keep a wide door rigid.
Cost by material
Material choice moves the double-door price more than any other factor. Insulated steel is the value and volume leader. Aluminum-and-glass full-view doors bring a modern showroom look at a premium, starting near $3,500.
Solid wood carriage doors average around $3,000 for a double and climb with species and detailing. Composite and faux-wood steel offer the carriage look at a lower price than real wood while resisting rot and warping, making them a popular middle ground.
Why a double often beats two singles
Homeowners with a two-bay garage sometimes weigh one wide door against two separate single doors. A single double door is usually the more economical and practical choice:
- One opener instead of two saves $350 to $600
- One spring system and one set of track and hardware
- A single install setup means less total labor
- Wider clearance makes it easier to maneuver larger vehicles
Two singles only make sense when a structural center post exists or you specifically want independent doors for two different uses.
Insulation matters more on a double
A double door is a large surface, so its insulation has an outsized effect on garage comfort and energy loss. If your two-car garage is attached or shares a wall with a bedroom above, a double- or triple-layer door with an R-value around R-12 to R-18 noticeably steadies the temperature.
The insulation upgrade on a double typically adds $200 to $450 over a comparable single-layer door, and it also stiffens the wide panels and quiets operation, which are meaningful benefits on a door this size.
Getting the best price
Stick with a standard 16x7 size and a stock color to avoid custom fabrication fees, which are more expensive on a large door. Bundle the opener with the install to save a second trip charge.
Because a double door is a bigger material purchase, the spread between quotes can be wide, so collect two or three itemized bids. Confirm the spring cycle rating and that the wide door includes a reinforcing strut for long-term rigidity.
Two-car garage door cost by material (installed)
| Double door | Low | Average | High |
|---|---|---|---|
| Insulated steel 16x7 | $1,400 | $1,850 | $2,800 |
| Composite / faux-wood steel | $1,900 | $2,500 | $3,600 |
| Aluminum & full-view glass | $2,800 | $3,500 | $6,500 |
| Solid wood carriage | $2,400 | $3,000 | $5,200 |
| Wide 18x7 (add-on) | $200 | $300 | $450 |