How To Winterize Windows in Calgary

As the temperature drops and the snowy months roll in, Calgary homeowners know all too well the impact a harsh winter can have on their homes—especially their windows. Drafty rooms, sky-high heating bills, and even potential window damage are just a few of the issues that can arise if you don’t take the time to properly winterize your windows.

Whether you’re living in downtown Calgary or on the outskirts, cold air and winter storms don’t discriminate. If your windows aren’t prepared to take on Alberta’s cold climate, you’re not only compromising your comfort but also risking higher energy costs and future repair bills.

The good news? Winterize Windows is easier than you might think—and the payoff is huge.

In this comprehensive guide, you’ll learn:

• Why winterizing your windows is essential in Calgary
• Warning signs your windows need replacement
• Easy DIY tips to improve insulation
• Professional solutions for long-term efficiency
• When it’s time to consider full window replacement

Let’s dig in.

Why You Must Winterize Your Windows in Calgary

With winter temperatures in Calgary often plunging well below freezing, your windows play a crucial role in maintaining a warm and comfortable indoor environment. Windows that aren’t properly sealed or insulated can cause several issues, including:

If any of the above problems sound familiar, now’s the time to take action.

Step 1: Check Your Current Windows — Do They Need Replacing?

Before you begin adding insulation or applying caulk, you need to evaluate your current windows. Are they in good condition? Or are they past their prime?

Here are some signs your windows may need to be replaced:

• You feel a constant draft, even with windows shut tight.
• Your windows are difficult to open or close, or you notice gaps in the frame.
• There’s visible condensation or fog between the panes.
• Your energy bills have increased without a change in usage.
• You notice signs of rot, warping, or decay, especially around wooden frames.

If your windows show any of these signs, it may be more cost-effective to replace them entirely rather than attempting to winterize windows that are no longer structurally sound.

What to Look for in Replacement Windows

If replacement is necessary, look for energy-efficient, vinyl-framed windows with a low U-value (a measure of heat loss) and high Energy Star ratings. Double- or triple-glazed options with argon gas insulation offer superior thermal performance and noise reduction—perfect for Calgary’s winters.

Window Seal West offers high-quality, Canadian-made vinyl windows specifically designed for cold climates like Alberta. With a factory-direct pricing model and expert installation, it’s a great way to get long-term performance and savings.

Step 2: Add Insulation to Reduce Heat Loss

If your windows are in good shape but still allow some cold air in, you can boost their performance with added insulation. This is especially important in older homes with single-pane windows or minimal sealing.

Insulation Options

Batt Insulation or Spray Foam:
You can apply batt insulation (typically fiberglass) or spray foam in areas around the window frame—particularly where the frame meets the wall. Be cautious not to overfill the space, as it can cause the window to warp.

Window Insulation Film Kits:
Available at most hardware stores, these transparent plastic films are applied directly to the glass surface. When shrunk with a hairdryer, they create an invisible barrier against drafts without obstructing your view.

Thermal Curtains or Cellular Shades:
Installing insulated window coverings like blackout curtains or honeycomb cellular shades adds another layer of defense. These work particularly well at night when temperatures drop significantly.

Step 3: Add Weather Stripping

Weather stripping is one of the most cost-effective ways to seal gaps and keep your home toasty throughout winter.

Types of Weather Stripping:

• V-strip (tension seal): Best for sealing the sides of a double-hung or sliding window.
• Foam tape: Simple to install and ideal for irregular-sized gaps.
• Felt strips: Inexpensive, though not as long-lasting.
• Rubber or vinyl gaskets: More durable and suitable for windows that see frequent use.

When applying weather stripping:

1. Clean the surface thoroughly so the adhesive sticks well.
2. Cut strips to the length of each window edge.
3. Press firmly and test the seal by closing the window.

Proper weather stripping not only blocks cold air but also prevents bugs and moisture from sneaking in.

Step 4: Caulk Around the Windows

Caulking is another inexpensive yet highly effective method to seal up small gaps and cracks around the window frame.

How to Apply Caulk Correctly:

1. Choose the right caulk: Use silicone-based or latex caulk designed for exterior use.
2. Clean and dry the area: Remove old caulk and debris using a scraper or utility knife.
3. Apply a steady bead: Hold the caulk gun at a consistent angle and move it smoothly along the gap.
4. Smooth it out: Use a damp finger or caulk-smoothing tool for a clean finish.

Focus on sealing both the interior and exterior sides of the window frame. Exterior caulking protects against rain and snow, while interior caulking keeps out drafts.

Step 5: Reinforce Your Windows to Minimize Drafts

Sometimes, insulation alone isn’t enough—especially if you live in an older home. Here are a few reinforcement strategies:

Install a Secondary Lock

Adding a second sash lock on your double-hung windows helps ensure a tighter seal and reduces the chance of air leaks.

Consider Storm Windows

Storm windows add an extra layer of protection without the need for full replacement. They’re typically mounted either outside or inside your existing window and act as an extra buffer against cold air.

Use Draft Stoppers

Draft snakes or fabric draft stoppers placed on window sills or at the bottom of sliding windows can provide temporary relief from small leaks.

Bonus Tips: Extra Ways to Keep Your Home Cozy

Want to go the extra mile this winter? Here are a few bonus winterization tips:

• Check and seal doors as well, especially patio doors and sliding doors.
• Install a smart thermostat to better regulate your indoor temperature.
• Upgrade to energy-efficient window glass inserts, such as Low-E coated glass.
• Regularly inspect your windows throughout the winter for signs of condensation, ice buildup, or drafts.

When to Call a Window Professional

DIY methods can go a long way—but if you’re still dealing with persistent drafts or rising energy bills, it may be time to bring in the pros.

A window expert can:

• Assess your current windows for air leaks and efficiency
• Recommend the best window styles and materials for your home
• Ensure proper installation to prevent long-term problems
• Offer factory-direct pricing and warranties

Choose the Right Partner for Window Replacement in Calgary

When winter hits, having reliable, energy-efficient windows makes a world of difference. Whether you’re looking to winterize your current windows or replace them entirely, choosing the right partner is key.

Window Seal West is your trusted, Canadian-owned company offering premium vinyl window replacements in Calgary, Edmonton, Red Deer, and surrounding areas. With in-house manufacturing and installation, we provide unmatched quality at factory-direct pricing.

Our team is experienced, professional, and ready to help you prepare your home for winter.

Get In Touch Today

Don’t wait until the snow piles up to take action. Prepare your home now and enjoy a warmer, more energy-efficient winter.

📞 Call Us: 1-888-818-4211