Expert Installation With Great Value

Double Glazing Northampton

At Fenster Glazing, we have installed high quality double glazing for many years. You can get many benefits when you choose us, which include being more thermally efficient and also being safe and secure. A double glazed window is very secure and makes it impossible for burglars to enter your property. This makes your home feel much more comfortable as well. We install uPVC and aluminium windows and doors for your Northampton home.

Your windows and doors are also very customisable as well because we put you in the driver’s seat when it comes to the design process. We understand that every homeowner is unique, and we want to reflect that in our double glazing products too. Choose from a range of vibrant colours so you can craft the doors that are right for you.

We offer high quality double glazing for all our products including uPVC casement windows, flush casement windows, sliding sash windows, aluminium doors, uPVC doors, composite doors, bifold doors, French doors and patio doors.

Double glazing has many benefits that can boost your home’s appeal. Our stunning range of windows let in plenty of natural light, creating a bright and spacious feel to your home. Our double glazing is thermally efficient, helping you save money on your heating bills. Our high grade materials prevent heat from leaving and entering your home, making your living space more comfortable throughout the year. You’ll stay cool in summer and warm in winter – our double glazing is the ideal upgrade to make your property more cost effective and enjoyable.

When you install double glazing in your Northampton home, it will also increase the value of your property and its curb appeal. This is because when you sell your home, you will get more than you bought it for, and it will help the house look fantastic. In addition, our double glazing products are very low maintenance, allowing you to do the things you enjoy without any further worries about your home’s performance.

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Customer Service You Can Trust

We are a reputable company that pride ourselves on outstanding customer service. We treat you like family and don’t put you under any pressure with hard sells. We offer customer service you can trust, while our reputation speaks for itself. We take time and are committed to making your home better than ever.

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Double Glazed Windows Milton Keynes

FENSA Accredited Home Improvements Northampton

We are accredited by FENSA, so you can be sure that you are getting safe and secure double glazing or your Northampton home.

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Double Glazing Window Suppliers Milton Keynes

Thermally Efficient uPVC Windows and Doors

We offer double glazing for your uPVC windows. uPVC windows offer more security for your Northampton home. A double glazed window is much harder to break through so you can feel confident that your home will be more secure in the long run. You can even boost your security even more because you can benefit from shootbolt mechanisms and multi point locking systems. You can feel confident that your home will be safer.

Another thing that double glazing can do for your windows is increase your peace and quiet. For example if you live in an area which is near an airport, or traffic, or even noisy neighbours, then double glazing can wipe the noise out straight away. You can enjoy a more tranquil living space.

We offer double glazing for a wide variety of windows and doors including flush casement windows, bow and bay windows, sliding sash windows, and even French doors too. There is something out there for everyone, and we are confident that you’ll find the right windows when you choose us.

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Home Improvement Milton Keynes

The SureFlap Cat Flap

It's not just windows and doors that we specialise in. We also offer state of the art SureFlap cat flaps, the perfect solution to keep your cat safe while also offering freedom. The innovative system allows your pets to freely move between the interior and exterior of your home. A microchip in the collar means the flap will only open for your feline friend. This will help keep your home safe from potential intruders. If you're looking for a cat flap that grants freedom without any of the hassle, choose SureFlap.

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Finance Available

We have a flexible range of finance options for your double glazed windows and doors. This can help you find a price that is right for you. Our loan options range from 3-10 years, so there is something that is right for you. Check out our price calculator tool to find out what is right for you.

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Milton Keynes Home Improvement

Our Process

Home Improvements Costs Milton Keynes


We will survey the property to find out what your double glazing measurements are. This will help us get an insight into your property and work on the installation.

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Understandably, renovating your home can be a daunting and stressful task. However, we will work very closely with you and communicate openly and transparently with you. We want your double glazing installation to be smooth and efficient.

Home Improvements Prices Northampton


We also offer an aftercare policy because we believe our installations should last you for years to come. Get in touch with us and see how we can support you!

Our Testimonials

There’s no better recommendation than those of our past customers. Take a look at what they have said about our home improvements products and installations.

We are very pleased with our new front door. Very good service and excellent quality. Would highly recommend Fenster Glazing

Nicky Kent

All windows plus a back door replaced. Excellent service from Nick and Adam. ??

Rebecca Barton

Amazing service! Arrived promptly to repair my front door at a better rate than expected. Highly recommend

Tom Williams

Thank you Adam and Nick for the lovely job! Installing the dog flap was huge relief for us and for our labrador Sasha. Excellent work, highly recommended ??

Jordanka Simeonova
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