The opening decides first

The post between two single doors usually helps carry the header. Going to one double means taking it out and putting in a longer header: structural work that may need a permit. Going the other way means framing a post in.

With two singles, each bay has its own door and opener, and if one stops working the other still opens. A double gives a wider way in, and one door and one opener to look after.

Weight and insulation

A double is one wide, heavy door on one set of springs; two singles are each lighter. Both come insulated or not, and both need good seals at the sides and bottom.

Two singles split the garage front into two shapes, which suits many carriage-house and traditional houses. One double reads wider and plainer, which suits many modern ones. Deciding between the two? Say so in the notes on your quote request.

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Two single garage doors or one double?

Three white garage doors with small recessed panels and divided-lite top rows, in white trim on a gray clapboard house. — Representative of our work · White short-panel doors, divided-lite top row, three bays · Ref. NDI-3010

For homeowners · October 8, 2026

The short answerStart with the opening you have. Two singles need a post between them, and one double needs a single long header across the whole width, so changing from one to the other is framing work before it is door work. If the garage already has the post, two singles are the simpler change; if it has one wide opening, a double is.

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The longer answer

The opening decides first
The post between two single doors usually helps carry the header. Going to one double means taking it out and putting in a longer header: structural work that may need a permit. Going the other way means framing a post in.
Everyday use
With two singles, each bay has its own door and opener, and if one stops working the other still opens. A double gives a wider way in, and one door and one opener to look after.
Weight and insulation
A double is one wide, heavy door on one set of springs; two singles are each lighter. Both come insulated or not, and both need good seals at the sides and bottom.
The look
Two singles split the garage front into two shapes, which suits many carriage-house and traditional houses. One double reads wider and plainer, which suits many modern ones. Deciding between the two? Say so in the notes on your quote request.

More advice

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