Expert Installation With Great Value

Double Glazing Dunstable

Fenster provides Dunstable residents with a wide selection of double glazing options to meet their individual requirements. Our expert double glazing team will work with you to choose a unique combination of frames and glass finishes in order to create a stunning, energy-efficient new feature for your property. We offer a broad range of windows and doors, which include casement, sliding sash, tilt and turn, and aluminium windows, as well as bifold, composite, uPVC and french doors. Our double glazing products are easy to keep clean and maintain with nothing more than a damp cloth. The benefits of having double glazing installed include improved energy efficiency, helping you save money on energy bills, higher security and better insulation against Dunstable weather. Natural light will also be brought into your property. With Fenster, you are guaranteed the highest quality double glazing services.

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Customer Service You Can Trust

We are a reputable company who prides ourselves on outstanding customer service. We will be with you every step of the way to ensure you get a high quality installation.

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Double Glazed Windows Milton Keynes

FENSA Accredited Home Improvements Hitchin

Fenster is a double glazing company based in Dunstable who are accredited by the government scheme, FENSA. FENSA stands for the Fenestration Self-Assessment Scheme, which is a programme that is designed to ensure that all domestic window and door replacements meet high standards and legal regulations. When you choose to use Fenster for your double glazing installations, you can rest assured that all legal requirements will be met. A certificate of assurance will be produced upon the completion of the job noting that the work has been registered with the local council and that guarantee insurance can also be provided. This ensures that all double glazing works carried out by Fenster adhere to the highest quality of standards, providing you peace of mind that no further problems will occur.

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Double Glazing Window Suppliers Milton Keynes

Thermally Efficient uPVC Windows and Doors

Fenster is providing Dunstable residents with amazing double glazing products for windows and doors, giving optimal thermal efficiency and amazing energy savings. Our doors are perfect in the way they combine aluminium extrusions and polyamide thermal breaks, which all lead to improved insulation in your Dunstable home. This will significantly reduce the need for central heating systems or a thermostat, saving both energy and money. By opting for Fenster's double glazing solutions, both a comfortable and warm home as well as massive energy savings and reduced electricity bills are effectively guaranteed. To maximise efficiency and keep the existing look of your home, Fenster provides perfect, perfectly tailored solutions strengthened with glass fibre and PU insulated chambers. This not only makes your home comfortably warm, but also helps reduce global warming and your carbon footprint. Investing in the energy efficient double glazing solutions provided by Fenster ensures a warm and cosy home, with no change to the views, while at the same time helping to protect the environment.

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Home Improvement Milton Keynes

The SureFlap Cat Flap

At SureFlap, we understand the importance of protecting your home and your pet, and so have developed a safe and secure solution that ensures exactly that. Our cat flaps are fitted with an advanced microchip reader, which reads the unique identity code of your pet's microchip and allows entry accordingly. This means that only your own pet cats and dogs can gain entry to your home, helping to keep any other animals from invading your space. Installation is very straightforward, and our cat flaps are designed to fit any window or door frame. In addition, we also offer dedicated tunnel setups, allowing you to customize the setup however you prefer.

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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.

Home Improvements Quotes Milton Keynes


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

From start to finish, Fenster have been amazing. Great communication, easy to work with, friendly fitters, flawless windows and a very fair price. I’m so happy I chose them over other companies and have already recommended to several of my friends and colleagues.

Dan Alger

Amazing service! Communication was easy from the beginning and both the professional who came to take measures and the one who finally replaced the windows were extremely friendly, quick, and helpful. I can't recommend enough!

Karen Gómez

I’d give 6 stars if I could! I’ve just had a new door fitted by these guys, absolutely amazing service and very fair price! I cannot fault a single thing! Thank you fenster!!

Laura B

I expected great service from Fenster Glazing based on the Trustpilot reviews and that is exactly what I received. Very satisfied customer, the whole process from measuring to fitting of my replacement door was made as easy as it could be for me! Well done to all in the Fenster team. You deserve your 5 star review.

Mark Vincent Smith

Excellent from End to End. Fenster originally came out to us and went through ideas, a couple of designs and all the options available to us. We settled and then changed our mind on a couple of things which was accommodated without question. Installation was superb - quick and efficient and the final product looks great!!

Mark S
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Our office opening hours are:
9am to 5pm, Monday - Friday.
Closed Saturday - Sunday.

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Based on 67 reviews
Heather Scott
Heather Scott
This is the second set of windows we’ve had fitted by Fenster. They are brilliant at every stage and I would highly recommend them. The staff are friendly and professional, they got the job done quickly and well, we’re very pleased with both sets of windows they fitted and would definitely use them again.
Dan Alger
Dan Alger
I contacted Fenster last week to see if they could help me. My French doors were failing to lock meaning we couldn’t leave the house. They sent Ben out the next morning who replaced the mechanism and also adjusted the door, closing up an annoying gap that’s been there for years. I wouldn’t hesitate to recommend Fenster to friends and family, a really helpful and efficient company.
Alison Budd
Alison Budd
We couldn't be more delighted with the professional service we received from Fenster Glazing. Nick turned up on time for the initial visit/quote which was fair and reasonable. After accepting the quote a survey was was carried out. The installers arrived on time and were polite and friendly. They covered everything up and left everything clean and tidy. After installation Perry called to check we were happy with the service. The quality of the french doors and windows installed were outstanding. We have no problem recommending this company. We would rate Service, installation and aftercare as 5 star.
I live in Milton Keynes, I contacted Fenster Glazing for an uPVC replacement door. From the beginning to the end, they conducted professional communication, from sales to the technicians coming to replace the door everything was perfect. I had a draught issue with my door and it is resolved now. I want to mention that I am also happy with the quality of the material of the door. I am hoping to have the same quality of service in the future if anything comes up—special thanks to Perry for dealing with everything. Ben
CMH Yoga
CMH Yoga
Highly recommended. I wanted a very specific style of doors to fit into our 1930s front porch. Fenster designed them, advised on colour & finish and they have produced exactly what I was looking for. The fitters were very polite and made sure everything was to my standards, and no mess left.
Chris Pike
Chris Pike
Great company. Very friendly, helpful. The work was completed to a very high standard, at a very reasonable cost, and I would highly recommend them.
Martin Cassin
Martin Cassin
Used Fenster glazing to replace two large panes of glass in our conservatory. Everything so Easy from obtaining a quote from Fenster to agreeing installation date and completing installation, polite, professional installation staff, very happy with service from start to finish

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