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Replacing timber sash windows can significantly enhance the aesthetic and energy efficiency of your property.
However, navigating the process requires careful planning and consideration, especially in a historic city like London, where many properties are subject to conservation regulations.
The following top 10 tips from Todi & Boys will help you through the complexities of sash window replacements in London, from choosing the right company to understanding the technical intricacies that will help you get the absolute best from the investment into your home.
1. Understand the Historical Significance
Before you begin the journey of replacing your sash windows, ensure you research the history of your property alongside any conservation rules for the area you live within.
Many buildings in London, especially in conservation areas, have specific regulations to maintain the historical integrity of London’s streetscapes.
Check if your property is listed or located in a conservation area to ensure you comply with local planning regulations. Authentic timber sash windows are often required to preserve the architectural heritage.
2. Choose the Right Timber
Opt for high-quality timber that will help ensure you get a better return on investment from your sash window replacements. Todi & Boys always recommend choosing Accoya, as this has the highest rot and weathering resistance.
Hardwoods such as Sapele, are also durable and have been historically used for sash windows. But such timbers require some level of maintenance in comparison to Accoya. At Todi & Boys, we always tell our customers that softwood isn’t an ideal option, because it may cost less in the short term, but in the long term, you’ll need to spend more time on maintenance.
3. Research and Select Reputable Companies
Selecting the right company is crucial for a successful replacement. Look for companies with a long-standing reputation and extensive experience in sash window replacements. Check their portfolio and read reviews from previous clients. A reputable company will have skilled craftsmen who understand the intricacies of sash windows and can replicate the original designs accurately.
London homes are sometimes 100 or 200 years old, and it’s hard to know exactly what is going to happen when the windows come out. It could have some serious water damage behind it, the plaster could fall off, the space the window would sit in could be filled with bricks (this happens when a timber window is replaced with a uPVC window) and when things like this happen – you’ll want to make sure you have the right person on your team. Someone who’s fitted thousands of windows and a workshop nearby to be agile enough to fix any issues to a beautiful standard.
4. Assess Craftsmanship and Skills
Craftsmanship is key when replacing sash windows. Ensure the company employs skilled joiners and craftsmen who specialise in timber sash windows. Ask to see examples of their work and visit completed projects or their workshop if it’s nearby.
At Todi & Boys, we always welcome customers to our local workshop based in Chessington. The most amount of information a client can get is by visiting the workshop because they learn so much just from seeing the process of window and door joinery. High-quality craftsmanship will ensure the new windows not only look authentic but also function smoothly and last longer.
5. Consider Energy Efficiency
Modern replacements can significantly improve energy efficiency while maintaining a traditional appearance. Look for double-glazed sash windows with energy-efficient glass that reduces heat loss and enhances sound insulation.
Ensure the windows have proper draught-proofing to improve thermal performance without compromising on aesthetics. Some companies will use thicker wood and thicker glass which only slightly increases the energy efficiency but at the same time – this drastically reduces how good the finished window will look in your home.
6. Prioritise Ventilation and Security
Sash windows are renowned for their excellent ventilation capabilities. When replacing them, ensure the new windows retain this feature. Modern sash windows can also incorporate enhanced security measures, such as robust locks and reinforced glass, without altering the traditional appearance.
7. Get Accurate Measurements
Accurate measurements are critical for a perfect fit. A professional surveyor should measure the existing window openings precisely. Incorrect measurements can lead to costly mistakes and delays.
Ensure the company provides a detailed survey and customises the windows to fit the exact dimensions of your openings. The best thing in this instance is to get a company that takes full responsibility for the measurements and the client isn’t required to measure themselves to place the order.
8. Understand the Installation Process
Understanding the installation process helps manage expectations and minimises disruptions. Replacing sash windows typically involves removing the old windows, repairing any damage to the window frames, and installing the new sashes. Ensure the company provides a clear timeline and explains each step of the process. Proper installation is crucial for the longevity and functionality of the windows.
You can view our video on Sash Window Installation here:
9. Check for Guarantees and Aftercare Services
A reliable company will offer guarantees on their workmanship and materials. This provides peace of mind that any defects or issues will be addressed promptly. Additionally, inquire about aftercare services. Regular maintenance is essential for timber windows, and some companies offer maintenance packages to keep your windows in top condition.
10. Budget Wisely
While it may be tempting to choose the cheapest option, quality should never be compromised. Investing in high-quality timber and skilled craftsmanship will save you money in the long run by reducing the need for repairs and replacements. Obtain detailed quotes from multiple companies and ensure they include all aspects of the replacement, from materials to installation and aftercare.
Our Final Thoughts
Replacing timber sash windows in London involves balancing historical authenticity with modern performance. By understanding the complexities and choosing the right company based on their skills, craftsmanship, and experience, you can ensure your new sash windows enhance the beauty and value of your property for years to come.
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