The heritage double glazing that we use in all of our period window double glazing projects is just 8-10 mm thick. However, thanks to the fantastic vacuum-sealed technology, it offers the same thermal properties as triple glazing. So, your sash windows offer much more protection from changes in the temperature than ever before. Vacuum insulated glazing also helps to keep the noise down in your home as well.
Unlike secondary glazing, with double glazing, any issues with draughts or damp are solved. Sash window secondary glazing keeps all of the draught and damp issues out of a room, but all issues are still present within the window frame. This means that eventually, your wooden window will begin to rot and decay.
With double glazing as a secondary glazing alternative, though, all of these issues are solved during the installation, so you can enjoy a warm, quieter home without the risk of damp and draughts ruining your lovely windows.
The photo below shows the original sash window on the left, with double glazing retrofitted to the original sashes. The window on the right has secondary glazing installed, and the difference is apparent.
Perhaps the best thing about double-glazed sash windows, apart from the brilliant thermal protection, is that it doesn’t change the charm of your home.
Traditional double glazing techniques for sash windows did change the appearance. However, thanks to vacuum-sealed technology, the glass is incredibly thin. So, your windows will look the same.
You may even struggle to see the double glazing yourself. Importantly, though, your windows will also function the same.
Secondary glazing may not change the look of your home from the outside, but it certainly does on the inside. It also makes opening your windows a two-step process. However, with vacuum double glazing as a secondary glazing alternative, you can open your windows exactly as you always have.
The style of your home will be completely unchanged, and you can enjoy unrivalled thermal efficiency.
With new vacuum double glazing technology, the double glazing units are thinner than ever before. With the right craftsmanship, they can be installed into original timber frames, even to the narrow rebates.
Yes, usually, timber frame restoration comes together with double glazing. We will also paint the windows from the exterior side.
From £910 for double glazing and draught-proofing of victorian style sash windows and from £960 for double glazed Georgian style sash windows. Full timber frame restoration will cost an additional £450-690 per window, depending on the size. Please also note that our minimum order quantity is 15 windows.
These images demonstrate the remarkable performance of VIG (Vacuum Insulated Glass) double glazing:
Looking at the color thermal image, the purple and blue areas reveal where heat is escaping. Notice the difference:
This heat loss happens continuously in homes with traditional windows. By upgrading to VIG double glazing, you can significantly reduce heat escape and lower your energy bills.
