What’s the Difference Between a Sun Tube and Skylight?
- Alberta Roof Experts
- Jun 15
- 2 min read
Adding natural light to your home can completely change how a space feels, especially during long Alberta winters when many of us are stuck indoors. The installation of a sun tube or a skylight can bring in the sunshine and a feeling of good weather all year long.
Understanding how each system is installed and performs will help you choose the right option.
How Sun Tubes and Skylights Work
A sun tube, also called a tubular skylight, uses a small dome on the roof connected to a reflective tube that runs through the attic and into the ceiling below. Sunlight travels down the tube and diffuses into the room through a ceiling fixture.
A skylight, on the other hand, is a full window installed directly into the roof. It allows both light and, in some cases, ventilation into the home.
Sun tubes are compact and designed for smaller spaces like hallways, closets or bathrooms. Skylights are larger and typically used in living rooms, kitchens or open areas where more natural light is needed.
Installation and Roofing Considerations
The installation process is where these two options really differ.
Sun tubes require a small roof opening, making them quicker to install and less invasive. Because the tube can be routed around attic obstacles, they are ideal for homes with limited roof access or complex framing.
Skylights require cutting a larger opening in the roof, modifying framing and installing flashing systems to prevent leaks. Proper sealing and insulation are critical, especially in Alberta, where freeze-thaw cycles can expose weak points in the installation.
This is why professional installation matters. Working with an experienced roofer in Red Deer, such as our professional installers, ensures flashing, sealing and insulation are handled correctly to prevent future issues.
Cost and Performance Differences: Suntube Vs. Skylight
Sun tubes are generally the more affordable option. In Alberta, most installations fall between $800 and $2,000, depending on tube length and roof access.
Skylights are a larger investment. A standard fixed skylight typically ranges from $2,500 to $6,000 installed, while vented or custom units can cost more.
In terms of performance, skylights provide more direct light and can make a dramatic visual impact. Some models can open to improve airflow. Sun tubes provide softer, diffused light and are better suited for smaller, enclosed spaces.
Which Option is Right for Your Home?
The choice between a sun tube and a skylight depends on your goals.
If you want a simple, cost-effective way to brighten a small space, a sun tube is usually the best fit. If you are looking to transform a larger room with natural light or add ventilation, a skylight is the better option.
Both systems need to be installed correctly to perform well in Alberta’s climate. Poor installation can lead to leaks, heat loss or condensation issues over time.
If you are considering adding natural light to your home, Alberta Roof Experts can help you choose the right option and ensure it is installed properly. We work with homeowners across Red Deer and Central Alberta to install skylights and sun tubes that are built to handle local weather conditions.
