How to Prepare Your Windows for Winter in Brussels

Jan 11, 2026By Yves Claes
Yves Claes

Inspect and Clean Your Windows

As the colder months approach, it’s essential to ensure your windows are ready to withstand the winter weather in Brussels. Start by thoroughly inspecting your windows for any damage or wear. Look for cracks, gaps, and any signs of moisture damage that could compromise their efficiency.

Once inspected, clean the windows to remove dirt and debris. This step not only enhances the appearance of your windows but also allows you to check for any hidden issues. Use a mild detergent and a soft cloth to avoid scratches.

cleaning windows

Seal Gaps and Cracks

Even the smallest gaps in your windows can lead to significant heat loss. To combat this, apply weatherstripping or caulking to seal any openings. Weatherstripping is ideal for movable parts like sashes, while caulking works well for stationary components.

Ensure that you use products designed for outdoor use to withstand the Brussels winter. Proper sealing can dramatically improve your home's energy efficiency, reducing heating costs and keeping the indoor environment cozy.

Upgrade to Double Glazing

If your windows are single-glazed, consider upgrading to double glazing. Double-glazed windows provide better insulation, reducing heat loss and noise from the bustling city streets. This investment can significantly enhance comfort during the chilly months.

While the initial cost might be higher, the long-term savings on energy bills and increased property value make it worthwhile. Double glazing is particularly beneficial in regions like Brussels, where winter temperatures can drop significantly.

double glazed windows

Use Thermal Curtains

Thermal curtains are an excellent way to add an extra layer of insulation to your windows. These curtains are designed to keep warmth in and cold air out, making them a practical addition to your winter preparation.

Choose curtains made from thick, insulating materials, and ensure they are long enough to cover the entire window. Closing them at night can help retain heat, while opening them during the day allows natural sunlight to warm your space.

Install Window Insulation Film

Window insulation film is a cost-effective solution to improve your windows' thermal performance. This film creates an insulating barrier that reduces heat transfer, keeping your home warmer.

Easy to install, it can be a DIY project using a hairdryer to shrink the film to fit. This simple addition can make a noticeable difference in your home's comfort level during the winter months.

window insulation

Regular Maintenance and Monitoring

Finally, maintain a regular schedule for checking your windows throughout the winter. Look for any new gaps or damage that might have developed and address them promptly. Regular maintenance ensures that your windows remain efficient and can handle the winter conditions effectively.

By taking these steps, you can ensure that your windows are well-prepared for the winter in Brussels, keeping your home warm and energy-efficient throughout the season.