Should I get a single or double garage door for a 2-car garage in Dieppe NB?

For a two-car garage in Dieppe, two single garage doors (each 8 to 10 feet wide) are generally the better choice over one double door (16 to 18 feet wide), primarily because single doors perform better in New Brunswick's winter climate — they are more wind-resistant, easier to insulate effectively, and if one opener fails during a winter storm, you still have access through the other door. That said, a single double door has legitimate advantages too, and the right choice depends on your specific situation, budget, and how you use your garage.

Two single doors offer several practical advantages in the NB climate. Each door has a smaller surface area exposed to wind, which means less flexing and bowing during the strong winter winds that sweep through the Greater Moncton area including Dieppe. A 16-foot double door has more than twice the surface area of a 9-foot single door, and in high winds, that large panel can flex inward enough to disengage from the tracks — a problem that is uncommon with single doors. Single doors also seal more tightly against the weather because the shorter span means less opportunity for warping and gaps along the bottom seal. In a heated or insulated garage, two well-sealed single doors typically outperform one large double door in terms of thermal efficiency.

From a reliability standpoint, two single doors mean two independent openers. If one opener fails during a January ice storm — and power outages or mechanical failures during NB winter storms are a fact of life — you still have full vehicle access through the other door. With a single double door, an opener failure or a broken spring leaves both vehicles trapped inside (or outside) until the repair is made. Garage door repair companies in the Greater Moncton area are typically responsive, but during major storms, wait times can stretch to several days.

The structural framing advantage of two single doors is also worth considering. A double door opening of 16 to 18 feet requires a substantial structural header — typically a doubled or tripled LVL beam — to carry the roof load and NB's significant snow loads (Dieppe falls in the 2.4 to 3.2 kPa snow load zone). The centre post between two single doors acts as an additional structural support, reducing header span and allowing a simpler, less expensive framing solution. This is particularly relevant if you plan to have a bonus room or storage loft above the garage, where the floor loads add to the structural demands on the header.

A single double door does have its advantages, though. It provides a wide, unobstructed opening that makes parking two vehicles side by side easier — particularly for less confident drivers who prefer the extra manoeuvring room. A double door also gives better access for larger items like boats, trailers, and recreational vehicles, and it creates a more open feel when the door is raised for summer entertaining or workshop airflow. Aesthetically, some homeowners prefer the clean look of a single wide door, and it can complement certain architectural styles better than two smaller doors.

Cost comparison in the NB market: two insulated single garage doors (9 feet wide, R-16) typically run $2,400 to $5,000 installed including two openers. A single insulated double door (16 feet wide, R-16) with one opener runs $1,800 to $3,500 installed. So two singles cost more upfront — roughly $600 to $1,500 more when you factor in the second opener at $350 to $800 installed. However, you save on the structural header during construction and gain the redundancy and weather-sealing benefits described above.

For most Dieppe homeowners building a new two-car garage, two single doors in the 9-foot or 10-foot width are the practical choice. If you drive a full-size truck, go with at least one 10-foot door on the truck side. If you need to store a boat or trailer and want maximum opening width, a double door is the way to go — just invest in a wind-rated model and quality weatherstripping. A local garage contractor familiar with Dieppe's building requirements and climate conditions can help you finalize the right configuration. Browse garage builders in your area through the New Brunswick Construction Network directory at newbrunswickconstructionnetwork.com.