Acorn Sash Windows

Sash windows are an iconic British window design that combine timeless style with modern performance — and here's why they're still the top choice for period and modern homes alike. Did you know that over 40% of listed buildings in the UK still retain their original sash windows ? According to Historic England , these traditional timber frames have stood the test of time thanks to their elegant design and long-lasting quality. Sash windows aren’t just a relic of the past — they can be upgraded for superior insulation, noise reduction, and ventilation . The Appeal of Traditional Sash-Style Windows While the design dates back to the 17th century, today's sash windows offer the perfect blend of heritage aesthetics and modern comfort — making them a smart choice for both character homes and new builds. Types of Sash Windows Available Single-Hung Sash – Only the lower sash is operable. Double-Hung Sash – Both sashes slide for better ventilation. Vertical Sl...

For many homeowners in North London, traditional timber sash windows are part of what makes a house feel like home. But if your windows are still single glazed, you may be dealing with cold draughts, higher heating bills, and reduced comfort—especially in winter. At Acorn Sash Windows Ltd , we help you enjoy the best of both worlds: the original character of your home, and the performance of modern, energy-efficient windows. Why Upgrade Your Sash Windows? Older timber sash windows often let in cold air, rattle in the wind, or feel difficult to open and close. While the traditional look is worth preserving, the comfort level can fall short of what today’s homes require. Our solution? We replace your single glazed timber sashes with high-performance double glazed sashes , designed to fit seamlessly into your existing frames wherever possible. This method keeps the external appearance of your windows unchanged—but transforms how they perform. The Benefits of Double Glazed Timber Sas...