Two single garage doors or one double — which is better?
Two singles give you redundancy — one failure does not trap both cars — plus a more traditional look and lighter, longer-lived doors. One double is easier to park in, especially with large vehicles, and means one opener and one set of hardware to maintain. Structurally, two singles keep a center post that a double has to span.
The redundancy argument
This is the strongest practical case for two singles, and people who have lived through a broken spring on a double door understand it immediately. With two doors, a spring failure on one bay is an inconvenience — the other car still gets out. With a single wide door, a failure blocks everything, which is the scenario in a spring breaking with the car inside.
It also means two lighter doors instead of one heavy one. Lighter doors work their springs and openers less hard, which tends to mean longer service life on both — the wear relationship in how long springs last.
The case for a double
- Parking. A 16 or 18-foot opening is far more forgiving with a full-size truck or SUV than two 8-foot ones with a post between them.
- Fewer parts. One door, one opener, one set of springs and cables to maintain.
- Moving large things. Boats, trailers, and shop equipment need the clear width.
- Cleaner modern facade on contemporary elevations.
The structural difference
Two singles leave a center post between the openings, and that post carries load. A double door spans the whole width with a single header, which has to be sized for it. This matters most when converting one arrangement to the other — removing a center post is structural work with a header to engineer, and it is the reason combining two doors into a double is a bigger project than it looks.
Wide doors also need reinforcement against wind and their own weight. A 16 or 18-foot door typically needs struts across the sections, which is the topic of struts on a 16-foot door. That is normal, but it is part of the specification rather than an add-on.
Wind, and the OKC angle
One more consideration for this market. A wide single-span door is a larger sail, and in high wind it is the most likely failure point on the house — the mechanism in the weakest point in a windstorm. Two smaller doors with a post between them are inherently stiffer against pressure, and a wind-rated double is a meaningfully more involved specification than a wind-rated single.
If you are building or remodeling and have the choice, weigh that alongside the parking convenience — the upgrade path is in whether a wind-rated door is worth it. If you are replacing what is there, keeping the existing configuration is almost always the simpler project. Our OKC team quotes both ways free, with financing available.
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Related Questions
Can two single garage doors be combined into one double door?+
Yes. The center pier between the two openings comes out, an engineered header spans the full 16 to 18 feet, and a single double door goes in. Read the full answer →
Should I replace both garage doors at the same time if only one is bad?+
If both doors went in at the same time and are 15 or more years old, replace both: the second one is living on borrowed time, doing them together costs less than doing them separately, and the colors will actually match. Read the full answer →
Does a 16-foot garage door need reinforcement struts?+
Yes. Every 16-foot door needs at least one strut on the top section where the opener arm attaches, and in central Oklahoma's wind environment two to four struts across the door is the smarter spec. Read the full answer →
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