How to effectively seal windows for winter - step-by-step guide

How to seal windows

Winter is a time when warmth in the home becomes invaluable, and leaking windows can lead to energy loss and increased heating bills. In this guide, we'll show you how to effectively seal your windows for winter to prevent draughts and heat loss. With our simple tips and tools, you can make your home energy efficient yourself. Learn how to seal plastic, wooden and roof windows step by step.

Step 1: Check if windows are leaking

Before you start sealing, make sure your windows really need repairing. Here are some ways to check if your windows are leaking:

• Candle flame test: Light a candle and move it along the window frame. If the flame starts to flicker, this is a sign that air is penetrating through the window.
• A touch of the hand: Run your hand along the windows. If you feel a cool breeze, this means that the sealing is insufficient.

How to effectively seal windows for winter

Step 2: Choose the right sealant

There are many products available on the market to help seal windows. Here are the most popular options:

• Self-adhesive gaskets - ideal for quick and easy sealing of plastic (PVC) and wooden windows. They are available in various thicknesses and shapes.
• Silicone sealant - is ideal for filling larger gaps and is waterproof.
• Installation foams - used mainly to fill larger gaps around the window frame.
• Thermal insulation films - is an extra step you can take by applying film to your windows to reduce heat escape.

Step 3: Clean the window frames

Before applying new sealants, it is important that the window frames are clean and dry:

• Use a damp cloth to remove dust and dirt from the window frame.
• For old seals, remove them with a spatula or knife to make room for the new seal.

Step 4: Apply adhesive seals

If you have opted for self-adhesive seals, here's how to install them:

1. Measure the length of the window frame to cut the gasket accordingly.
2. Remove the protective adhesive layer and gradually apply the seal along the frame.
3. Make sure the gasket fits snugly to the surface. Press it down firmly to ensure good adhesion.

Step 5: Sealing larger gaps with silicone or foam

If you notice larger gaps around the window frame, use silicone or mounting foam:

• Silicone: Apply a thin layer of silicone along the gap. Remember to use a silicone gun to facilitate precise application. Allow to dry according to the manufacturer's instructions.
• Mounting foam: Apply the installation foam to the gaps and trim off the excess once it has dried.

Step 6: Apply thermal insulation film to the windows

To further increase the thermal insulation, you can use a thermal insulation film. Here's how to do it:

1. Trim the film to the size of the glass.
2. Stick the film to the inside of the window, following the manufacturer's instructions.
3. The film will create an additional barrier to cold air, reducing heat loss.

Step 7: Regularly check window seals

Window sealing is not a one-off activity. To ensure maximum effectiveness, check the condition of your seals every year, especially before winter. If you notice wear and tear, replace the seals with new ones.

Summary

Effectively sealing your windows for winter is key to keeping your home warm and reducing your heating bills. With simple steps such as choosing the right gaskets, applying silicone or mounting foam and using heat-insulating film, you can take care of your window insulation yourself. Remember to check the condition of the seals regularly and respond to any leaks so that you can enjoy thermal comfort all winter long.

sealing windows for winter