Skip to content

How to draught-proof your timber sash windows: a guide for homeowners

As the seasons change and colder months approach, ensuring that your home remains cosy and energy-efficient becomes a top priority. One of the key areas that often lets in cold air and drives up heating costs is the timber sash window. These classic windows are not only a charming feature of many homes but can be notorious for allowing draughts to seep in. The good news is that you can draught-proof your timber sash windows and keep your home comfortable all year round. In this guide, we’ll walk you through the process, step by step.

Why Draught-Proofing Matters

Draught-proofing your timber sash windows offers several benefits beyond just keeping your home warm. It can also contribute to energy savings by preventing heat loss, ultimately reducing your heating bills. Additionally, by creating a tighter seal, you’ll prevent dust and pollen from entering your home, making it a healthier environment for you and your family.

Materials You’ll Need:

  • Draught excluder strips: These adhesive strips come in various materials, such as rubber or foam, and are designed to create an airtight seal when applied to the edges of your sash windows.
  • Sealant: A good-quality sealant will help close gaps and cracks in the window frames, preventing draughts from finding their way in.
  • Weatherstripping: This material is perfect for sealing gaps between movable parts of the sash windows, providing an effective barrier against draughts.
  • Paint and brushes: Before applying any of the draught-proofing materials, make sure your windows are well-maintained. A fresh coat of paint can help protect the wood and prevent rot.

Step-by-Step Draught-Proofing Process

Inspect your windows: Before starting the draught-proofing process, thoroughly inspect your timber sash windows for any existing gaps, cracks, or areas of concern. Take note of the specific areas that require attention.

Clean and prepare: Clean your windows and frames to ensure the draught-proofing materials adhere properly. Use a soft cloth and mild detergent to remove dirt and grime.

Apply draught excluder strips: Measure the dimensions of your windows and cut the draught excluder strips accordingly. Apply the strips around the edges of the sashes where they meet the frame. This will create a tight seal when the windows are closed.

Use weatherstripping: For the movable parts of your sash windows, like where the two sashes meet, apply weatherstripping. This will prevent draughts from entering through these joints.

Seal gaps with sealant: Inspect the frames and sashes for any gaps or cracks that aren’t covered by the previous steps. Apply sealant to these areas, smoothing them out for an even finish. Allow the sealant to dry completely before moving on.

Test your windows: After completing the draught-proofing process, test your windows by opening and closing them. Make sure the draught-proofing materials do not hinder the functionality of the windows. Adjust and trim the materials if needed.

Maintenance and regular checks: Draught-proofing your timber sash windows is a proactive step, but it’s important to perform regular checks to ensure that the materials remain effective. Replace any worn-out strips or sealant promptly to maintain optimal efficiency.

By taking these simple yet effective steps, you can transform your charming timber sash windows into efficient barriers against cold draughts. Not only will you enjoy a more comfortable home, but you’ll also reduce your energy consumption and make a positive impact on the environment. Remember, a well-maintained and draught-proofed home is a haven of comfort and savings, and your timber sash windows are a great place to start.

If you’re looking for new timber windows, the team at Nine Zero are here to help. Call us on 0208 397 8636 or email us at hello@nine-zero.co.uk.