Say Goodbye to Draughts — Hello to Lasting Comfort

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 Sashes

• ✔️ Draught-proof & thermally efficient
  Enjoy a warmer, more comfortable home with reduced energy bills and better temperature control.

• ✔️ Noise reduction
  Keep street noise out and enjoy a quieter, more peaceful space indoors.

• ✔️ Enhanced security
  Our sashes include improved locking systems and stronger glazing for added peace of mind.

• ✔️ Preserved period features
  We carefully match the original profiles, mouldings and glazing bars—so your home keeps its heritage charm.

Trusted Craftsmanship. Local Expertise.

With over 15 years of experience, Acorn Sash Windows Ltd has built a reputation across North London for skilled workmanship and dependable service. Every project is tailored to your home, with no cutting corners and no unnecessary upsells.

We’re a close-knit, community-based team focused on delivering long-term value—whether we’re working on one window or the whole house.

Book Your Free Survey

If your sash windows are letting in the cold, now’s the time to upgrade. We offer free surveys across North London, where we assess your existing windows and talk through the best options—honestly, clearly, and without pressure.

Let’s make your home warmer, quieter, and more secure—without losing its charm.

📍 North London’s trusted sash window specialists