Alaskan Windows and Doors Ltd are dedicated to bringing all of our customers the best possible replacement windows. With our intricate manufacturing process and utilisation of the latest materials, we are able to guarantee you:
Experienced Installation Teams
Maximum Thermal Efficiency
Maximum Security Products
A Beautiful Range of Designs
If you live in Morden and want to improve the performance of your traditional windows without replacing them, secondary glazing could be the ideal solution. Many period properties feature original windows that add charm and character, but they may no longer meet modern energy efficiency standards. In fact, up to 10% of your home’s heat could be escaping through single-glazed panes.
Secondary glazing allows you to enjoy the best of both worlds. By installing a slimline, made-to-measure unit over your existing window, you’ll create an extra insulating layer, similar to double glazing, without altering the appearance of your property. This added layer improves thermal efficiency, reduces draughts and condensation, and helps preserve the condition of your original windows.
At Alaskan Windows, we specialise in secondary glazing for heritage and character properties in Morden and the wider London area. Our discreet, high-performance units are suitable even for listed buildings and conservation areas, helping you boost comfort and efficiency without compromising your home’s style or history.

Our secondary glazing is available in a range of styles to suit different window types, including hinged units for single casement windows and horizontal sliding systems that can accommodate up to five casements. Hinged options can also provide fire escape access where required.
If you have traditional sash windows, we offer vertical sliding units designed to mirror their function and appearance. Whatever style you choose, all units align precisely with your existing frames, ensuring a discreet internal finish and minimal visual impact from the exterior.
With Alaskan Windows, you can also get made-to-measure secondary glazing for any window. We custom cut our glass to your specifications, meaning we can provide secondary glazing for a range of window styles. Whether your designs are small or expansive, we can provide a unit that offers complete coverage for your classic windows.

Morden has a vibrant community, but with that comes busy streets. Alaskans’ secondary glazing can act as a powerful sound barrier, reducing external noise. As part of our partnership with Granada, we offer units that achieve remarkable noise reduction to make your home peaceful. With one of these units, you can achieve a larger gap between glass panes than with new double glazing, meaning the sound waves have to travel further.

As windows age, they can become vulnerable to problems like water ingress, cracking, and general wear and tear. But with our secondary glazing, you can restore strength and performance to your existing windows in your Morden home. Our systems provide an additional barrier that reinforces the original frame, significantly improving security.
Each unit is expertly sealed to create an air- and water-tight fit, making it far harder for intruders to gain access and helping to prevent common issues like condensation and draughts. With secondary glazing, you’ll protect both your home and your original windows for years to come.
With our secondary glazing, you can significantly enhance the comfort and efficiency of your Morden home. Designed to sit discreetly over your existing windows, our bespoke units create an insulating layer that dramatically improves thermal performance.
By reducing heat loss and blocking out cold draughts, our secondary glazing helps maintain a warmer indoor environment all year round. As a result, you’ll rely less on central heating, potentially lowering your energy bills and reducing your home’s carbon footprint. Choose Alaskan Windows to upgrade your home’s performance without altering its original charm.
Alaskan Windows is proud to be a trusted local specialist for secondary glazing in Morden. When you choose us, you’re not just investing in high-performance glazing, you’re also choosing a team that delivers outstanding customer service from start to finish. We care as much about your experience as we do about the quality of our products.
Our secondary glazing is custom-made to fit seamlessly over your existing windows, preserving their appearance while enhancing performance. Every unit is cut to measure for a precise fit, and we’ll carry out installation at a time that suits you, making the whole process smooth and stress-free.
Secondary glazing is a type of glazing that helps to improve the thermal performance and noise pollution. This type of glazing can be fitted into all door and window frames.
Our secondary glazing will help keep your home warmer during the colder months of the year by retaining heat and keeping cold air from entering your home. You can also benefit from improved sound insulation, keeping noise pollution out.
Secondary glazing offers better thermal performance and noise pollution reduction than double glazing. The extra layer of glass works to block out unwanted noise, whilst also retaining heat in your home for longer.
Get in touch with Alaskan Windows today for high-quality secondary glazing in Balham! If you’d like to learn more about how our bespoke designs can enhance your home, our friendly team is here to help.
You can either call us on 02086 448 060 or fill in our online contact form to ask us anything. We look forward to helping you with your secondary glazing installation in Morden!