top of page

Five Top Tips To Maintain Your Wood Sash Windows

Going Old School: Why Choose Traditional Wood Sash Windows

Traditional sash windows are generally built using a wooden frame; the wood is chosen depending on factors like weight, durability, and desired aesthetics.

  • Pine: A popular choice due to its affordability, workability, and decent weight for vertical sliding sashes.

  • Oak: A strong and rot-resistant wood, ideal for window sills that need to withstand various weather conditions.

  • Mahogany: A prized wood known for its stability, moderate weight, and beautiful grain. Often used in grand or public buildings for a touch of elegance, though it can be expensive.

The elegance of wood sash windows is undeniable, but their charm goes beyond aesthetics, including benefits such as efficiency and value. To find out more about the differences between modern and wood sash windows, read our previous blog post comparing the two

A white wood sash window frame in the process of being rennovated.

Caring for Your Wood Sash Windows

Traditional wood sash windows require a higher level of maintenance; however, with proper care, they can last for generations. 

Five Top Tips For Maintenance

  1. Regular Cleaning - When cleaning original single-glazed windows, be sure to handle them with care as the thin glass can be easily damaged.

  2. Lubrication of Moving Parts - Rub wax or oil into the wood sash window frame to prevent sticking and ensure the system runs smoothly.

  3. Repaint Occasionally - repainting or varnishing ensures smooth operation and lasting beauty. It protects the wood from weathering. We recommend painting them every 8-10 years, depending on exposure to weather. For example, if the house is South-Facing, the sun will be on the building, and it may need painting sooner as the timber dries and cracks can appear in the paint.

  4. Keep Climbing Plants at Bay - If your property walls have extensive ivy or other climbing plants, make sure these are regularly trimmed as they can cause window rot and other issues.

  5. Consult a Sash Window Specialist - For historical properties, consulting with a specialist in sash window restoration can be beneficial.

When It's Time For Renovation

Even with careful maintenance and monitoring, wood sash windows can eventually fall into disrepair and need the sashes and/or frames replaced. The first signs of rot can be cracks in paintwork, moist areas, and broken wood. At this stage, it's good to seek the advice of a specialist to assess the damage and make a full or partial repair. Unlike other carpenters, we have extensive experience with wood sash windows and can identify what repairs are necessary. Get in touch to see how we can help!


Wood sash windows can ensure you keep a touch of history in your home while also providing modern benefits like energy efficiency. By following these maintenance tips, you can ensure that your building's historical significance and unique character are maintained for generations to come. If you require any advanced repair or restoration work, feel free to reach out to us today.



bottom of page