Winter puts significant strain on our windows – cold, moisture, and constant temperature changes challenge their functionality, durability, and airtightness. To minimize energy loss and ensure comfort in the house, it is essential to prepare windows for winter. With a few simple measures, you can prevent drafts, extend the lifespan of your windows, and save on heating costs.

1. Cleaning windows before winter – Why it’s worth it

Many people hesitate to clean their windows in winter, but it is actually the perfect time to enjoy the benefits of clean windows.

Why is it important?

• More daylight: Clean panes let in more light – especially valuable in the dark winter months.
• Damage detection: Small cracks or sealing issues become more apparent during cleaning and can be fixed in time.
• Energy efficiency: Unsoiled windows let in more sunlight, reducing heating costs.

How to clean your windows properly in winter?

1. Pick the right day – Clean on a cloudy, mild day without frost. Sunlight causes water to evaporate too quickly, leaving streaks, while frost can make glass brittle.
2. Use the right cleaning agents – A mix of water and vinegar removes grease and leaves a shine. Avoid aggressive chemicals that could damage the seals.
3. Use the right cloths – Microfiber cloths are ideal as they don’t scratch the surface and effectively remove dirt.
4. Don’t forget the ventilation slots – Clean the slots with water and mild detergent to improve airflow and prevent moisture buildup.

More details can be found in our blog post about window cleaners.

2. Technical inspection – How to check your windows

Before the cold season starts, windows should be checked thoroughly to identify and fix any problems.

What should you check?

• Functionality: Can the window open and close smoothly?
• Sealing: Can you feel a draft when the window is closed?
• Movable parts: Are the hinges or fittings loose or stuck?

How to conduct the inspection?

1. Check window movement – Open and close the window several times. If the hinges creak or the movement is difficult, maintenance is required.
2. Check for drafts – Hold a lit matchstick along the edges. If the flame flickers, there is a draft.
3. Check fittings and hinges – Lubricate moving parts with silicone spray or a special care spray to keep them smooth.

If you have questions about this inspection, you can always contact us through the contact form.

3. Window frames – How to protect them from weather conditions

Window frames, especially wooden ones, are vulnerable to moisture, cold, and temperature fluctuations. Proper maintenance of frames is essential.

Steps to care for window frames:

1. Clean the frames – Use water and mild detergent for PVC frames. Wooden frames should be treated with special wood care products.
2. Apply a protective coating – Impregnation protects wooden frames from moisture. For PVC frames, thorough cleaning is sufficient.
3. Identify and repair damage – Cracks or paint damage on wooden frames should be repaired with wood filler or protective lacquer.

4. Adjusting windows – How to prevent drafts in winter

Modern windows often have a summer and a winter setting. In winter, the window sash's pressure against the frame should be increased to prevent drafts.

Why is this important?

• Thermal insulation: A tighter seal ensures better thermal insulation.
• Energy savings: Heating costs are reduced thanks to the prevention of drafts.
• Durability: Properly adjusted windows experience less wear and tear.

How to adjust window pressure?

1. Locate the screws – The screws are usually on the inside of the window sash.
2. Adjust with an Allen key – Turn the screw towards the seal to increase the pressure.
3. Check the seal – Close the window and check with a sheet of paper if it is firmly held in place.

By making this simple adjustment, you reduce energy consumption and extend the life of your windows.

5. Caring for window seals – Protection against wind and weather

Window seals are particularly important in winter as they prevent cold air from entering the home. They ensure effective thermal insulation and protect against moisture.

What should you pay attention to?

• Check the condition of the seals – If the seals are brittle or cracked, they need to be replaced.
• Clean the seals – Remove dirt with water and mild detergent.
• Maintain the seals – Lubricate the seals with petroleum jelly, glycerin, or a special seal care product to keep them flexible and prevent them from becoming brittle.

How to replace a seal:

1. Remove the old seal – Gently pull out the old seal.
2. Install the new seal – Measure the correct length of the new seal and press it into the groove.
3. Check the fit – Test if the seal is tight and the window can close smoothly.

6. Why clean windows in winter?

Many people avoid cleaning windows in winter. But that’s a mistake, as there are good reasons to do so in winter:

Benefits of cleaning windows in winter:

• More light in the home – Clean windows let in more sunlight, improving well-being.
• Energy savings from solar heat – Sunrays can freely enter the home and naturally heat it.
• Early detection of damage – Small cracks or leaks are easier to spot and repair during cleaning.

If you don’t have time for cleaning, you can book our professional cleaning service at GlasRein.ch. Our experts take care of everything – from cleaning to maintenance.

Key actions to prepare windows for winter:

• Thoroughly clean the windows – Use vinegar water or a professional cleaning agent.
• Check the condition of the windows – Look for cracks, drafts, and stuck hinges.
• Adjust the pressure – Set the windows to winter mode to prevent energy loss.
• Maintain the seals – Lubricate seals with petroleum jelly or glycerin to keep them flexible.
• Clean the ventilation slots – Ensure good airflow to avoid condensation and moisture issues.

If you have any questions about the measures to prepare for winter, feel free to contact us. Use our contact form, and our experts will be happy to assist you.