Understanding the Different Types of Roof Vents for Calgary Homes
Proper attic ventilation plays a critical role in protecting your home, not just your roof. Without it, excess heat and moisture can lead to roof damage, increased energy bills, mold growth, and premature shingle deterioration. That’s why choosing the right types of roof vents is essential for homeowners in Calgary, where seasonal temperature swings can put extra strain on your roofing system.
In this guide, we’ll break down why attic ventilation matters, what makes a vent effective, and the different types of roof vents available, including which options make the most sense for homes in Alberta’s climate.
Why Does Roof Ventilation Matter?
Attic ventilation works by maintaining a continuous flow of air through your attic space. This airflow regulates temperature and moisture levels, both of which are vital for the longevity of your roof and energy efficiency inside your home.
In the summer:
- Roof vents release trapped hot air, keeping attic temperatures down.
- This reduces strain on your air conditioner and lowers energy consumption.
- Prolonged exposure to high heat can warp or damage roof decking and shingles – vents help prevent that.
In the winter:
- Proper ventilation expels moist indoor air that rises into the attic.
- This minimizes the risk of condensation and attic rain, a common issue in Calgary.
- It helps prevent ice damming – a major cause of roof leaks during freeze-thaw cycles.
Simply put, well-installed types of roof vents help extend the life of your roof, improve indoor comfort, and protect your home from costly repairs caused by moisture buildup
Exhaust vs. Intake: Two Sides of the Ventilation Equation
Attic ventilation systems rely on two types of airflow components:
- Intake Vents – Usually installed under the eaves or soffits to let cool, fresh air into the attic.
- Exhaust Vents – Installed near the roof peak to release hot, moist air from the attic.
This article focuses on exhaust vents, which are responsible for drawing warm air out of the attic to maintain a balanced air exchange. Let’s explore the most common and effective types of roof vents used as exhaust solutions.
Common Types of Roof Vents (Exhaust Systems)
1. Square Roof Louvers (Turtle Vents)
These low-profile, square-shaped vents are one of the most frequently installed options across Calgary homes. Commonly referred to as turtle vents, they are reliable, simple to install, and work best when evenly spaced along the upper sections of the roof.
- Function: Allow hot air to escape from the attic passively.
- Best For: Homes with adequate soffit intake ventilation.
- Brands Used in Calgary: GAF RT65 and Duraflo WeatherPro 50.
Their low-profile design is ideal for those wanting a minimal visual impact, but they must be installed correctly – and in sufficient quantity – to be effective.
2. Ridge Vents
Installed along the entire peak of your roof, ridge vents provide a continuous exhaust system. When combined with soffit vents, they create a natural airflow that pulls air in from below and releases it at the ridge.
- Advantages: Sleek appearance, no moving parts, effective passive ventilation.
- Drawback: Requires proper insulation and balanced intake for peak performance.
Homeowners who want a venting solution that blends in seamlessly with their roofline often prefer ridge vents over boxy alternatives like turtle vents.
3. Turbine Vents
These roof vents use wind power to draw air up and out of the attic. A spinning turbine captures the wind, creating suction that improves airflow, especially helpful in areas that experience regular breezes.
- Pro: Enhanced ventilation in windy climates.
- Con: Susceptible to damage in high winds or from falling debris; if bent, turbines may stop spinning and become ineffective.
Although turbine vents were once a popular choice, newer systems like ridge or high-profile static vents now provide more reliable performance in Calgary’s variable weather.
4. Duraflo PRO Ventilator
The Duraflo PRO is a high-profile static vent that stands taller than turtle vents, making it more effective during heavy snowfall. Its chimney-like structure uses wind energy and pressure differentials to draw air from the attic.
- Key Advantage: Greater snow clearance and stronger ventilation capacity.
- Best Use: Cold climates with heavy snow, like Calgary.
These vents can replace multiple turtle vents, offering homeowners a cleaner look and stronger performance, particularly during winter months.
5. Primex Goose Neck & Low-Profile Vents
Primex offers a range of through-roof venting solutions for more than just attic airflow. These products can serve dryer exhausts, bathroom fans, stove hoods, or HVAC intakes.
- Compatibility: Works with 4” to 8” ducting.
- Benefits: Versatile, easy to install, and low maintenance.
While not a primary attic vent, these are essential for modern ventilation systems in kitchens, bathrooms, and mechanical rooms.
6. Plumbing Vents
Though not technically part of your roof ventilation system, plumbing vents are vital components. These pipes maintain pressure in your home’s plumbing, prevent water trap siphoning, and allow sewer gases to escape safely.
- Note: They are not covered, as open airflow is key to their function.
Understanding the difference between plumbing and exhaust vents can help homeowners avoid costly mistakes when it comes to repairs or roof replacements.
Choosing the Right Roof Vent for Your Home
The best choice depends on your home’s size, roof design, attic insulation, and climate. A few key considerations:
- Snowfall: Choose a vent that won’t get buried in winter, like the Duraflo PRO.
- Aesthetic Preferences: If you want a low-profile look, ridge vents are an ideal solution.
- Ventilation Needs: Larger homes may need multiple vents or a combination of styles to meet airflow requirements.
At Hubbard Roofing & Exteriors, our experienced team ensures your home gets the right system, whether that’s a standard vent upgrade or a more advanced solution for managing ice damming and attic rain.
Expert Installation of All Types of Roof Vents
With nearly 40 years of roofing experience in Calgary, we’ve seen what works – and what doesn’t. We don’t just install vents; we assess your attic, roof slope, and ventilation needs to ensure everything works together. From Euroshield rubber roofing to complete exterior renovations, our goal is simple: protect your home with solutions that last.
Need Help with Roof Ventilation?
Not sure which types of roof vents are best for your home? Contact Hubbard Roofing & Exteriors for a detailed inspection and personalized recommendation. Whether you’re building new or upgrading an older ventilation system, we’re here to make sure your roof works as hard as it should, season after season.
Request a quote online today or contact us to schedule a consultation.
