Should I install a cupola or ridge vent on my garage in Moncton New Brunswick?

For a garage in Moncton, a ridge vent is almost always the better choice over a cupola. Ridge vents provide superior ventilation performance, cost less to install, and handle New Brunswick's harsh winter conditions much better than cupolas.

Ridge vents work by creating continuous airflow along the entire roof peak, drawing hot air out through natural convection while intake vents at the soffit or eave level bring fresh air in. This creates a steady air exchange that prevents moisture buildup, reduces summer heat, and helps prevent ice dams in winter. For a typical two-car garage in Moncton, a ridge vent costs $8-15 per linear foot installed and provides ventilation equivalent to several roof vents or a large cupola.

Cupolas are primarily decorative features that happen to provide some ventilation. While they can add attractive visual interest to a detached garage — especially on rural properties or traditional-style homes — their ventilation capacity is limited to the size of their louvers. A functional cupola large enough to properly ventilate a garage costs $1,500-4,000 installed, compared to $200-500 for ridge venting on the same garage. Cupolas also create potential leak points where they penetrate the roof, and in Moncton's wet Maritime climate, these penetrations require careful flashing and ongoing maintenance.

Moncton's climate makes ridge vents particularly effective. The city experiences significant temperature swings between seasons, high humidity from the Bay of Fundy, and moderate snow loads (around 2.4 kPa). Ridge vents handle these conditions well because they're designed to shed water and snow while maintaining airflow. The continuous design means there's no single point of failure, and modern ridge vents include weather-resistant baffles that prevent wind-driven rain from entering while still allowing air movement.

For garage ventilation in Moncton, combine ridge vents with soffit vents for the most effective system. Install continuous soffit vents along the eaves to bring fresh air in low, and ridge vents along the peak to exhaust warm, moist air. This creates natural convection that works year-round without electricity or moving parts. If your garage has a workshop area or you store vehicles that bring in snow and road salt, this ventilation system helps prevent condensation that leads to rust and mould.

Consider a cupola only if aesthetics are your primary goal and you're willing to pay significantly more for the visual appeal. Cupolas work well on detached garages with traditional or barn-style architecture, particularly in rural settings around Moncton. If you choose a cupola, ensure it's properly sized (minimum 1 square foot of cupola vent area per 300 square feet of garage floor space) and professionally installed with proper flashing and weatherproofing.

Installation timing matters in New Brunswick — both ridge vents and cupolas should be installed during the roofing phase or require partial roof removal for retrofit installation. If you're building a new garage or replacing the roof, add ridge venting during construction when it's most cost-effective.

Need help finding a roofing contractor experienced with garage ventilation? New Brunswick Garages can match you with local professionals who understand Maritime climate requirements and proper ventilation design for Moncton-area garages.