Welcome back to our series on windows and doors! In our last article, we explored how insulation materials like polyurethane and polystyrene contribute to energy-efficient doors. Today, we turn our attention to a crucial finishing touch that ensures those materials perform at their best: weatherstripping and sealing.
Even the most insulated door can fall short if air and moisture seep through gaps around its edges. Weatherstripping and sealing are essential for maintaining indoor comfort, reducing energy costs, and protecting your home from the elements. Let’s explore the types of weatherstripping, installation tips, and how these components enhance energy efficiency in Canadian homes.
Why Weatherstripping and Sealing Matter
In Canada’s variable climate, exterior doors face everything from icy winds to humid summer air. Without proper sealing, these doors can become major sources of energy loss. Weatherstripping and sealing help by:
- Blocking Drafts: Preventing cold air from entering and warm air from escaping.
- Reducing Moisture Intrusion: Protecting against rain, snow, and humidity.
- Improving HVAC Efficiency: Lowering heating and cooling demands.
- Enhancing Comfort: Eliminating temperature fluctuations and noise.
These benefits are especially important in older homes or buildings with high traffic, where door gaps tend to widen over time.
Types of Weatherstripping for Exterior Doors
Choosing the right weatherstripping depends on your door type, climate, and usage. Here are the most common options:
| Type | Best Use | Pros | Lifespan |
|---|---|---|---|
| Foam Tape | Irregular gaps, door frames | Easy to install, inexpensive | 1–3 years |
| V‑Strips (Tension Seals) | Door sides and tops | Durable, tight seal | 3–5 years |
| Rubber/Silicone Gaskets | High‑traffic exterior doors | Flexible, weather‑resistant | 8–10 years |
| Door Sweeps | Bottom of doors | Blocks drafts and pests | 5–7 years |
| Felt Strips | Temporary or low‑use areas | Cheap, easy to apply | 1–2 years |
Each material offers unique advantages. For example, rubber gaskets are ideal for harsh winters, while foam tape works well for quick fixes in milder climates.
Installation Tips for Maximum Effectiveness
Proper installation is key to getting the most out of your weatherstripping. Here are some best practices:
- Inspect the Door Frame: Use a flashlight or incense stick to detect air leaks.
- Clean Surfaces Thoroughly: Dirt and moisture can prevent adhesives from sticking.
- Measure Twice, Cut Once: Ensure strips fit snugly without overlapping.
- Use Exterior-Grade Caulk: Seal gaps around the frame with silicone caulk for added protection.
- Check the Sweep: Make sure the door sweep touches the threshold without dragging.
Regular maintenance, such as checking for wear and replacing damaged strips, will keep your seals effective year-round.
Weatherstripping and Canadian Energy Standards
While weatherstripping itself isn’t rated by ENERGY STAR®, it plays a vital role in helping doors meet Canadian energy standards. Proper sealing contributes to:
- Lower Air Leakage Rates: Required by NAFS and CSA standards.
- Improved R-Values: By preventing thermal bridging around the door.
- Compliance with NBC: Ensuring doors meet building code requirements for airtightness.
Together with insulated cores and energy-efficient glazing, weatherstripping completes the energy-saving package.
Final Thoughts
Weatherstripping and sealing are simple yet powerful tools for improving door performance. Whether you're upgrading an older home or building new, investing in quality seals can lead to significant energy savings and enhanced comfort.
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