Expert Installation With Great Value

Double Glazing Flitwick

At Fenster, we provide excellent quality installations of premium double glazing in Flitwick homes. Our double glazing offers excellent security benefits to your home while boasting high quality thermal efficiency. This means you won’t need to rely on internal heating to maintain a comfortable temperature in your home, reducing your energy costs significantly. Double glazing also offers enhanced security, giving you peace of mind within your home, resistant to intruders.  Our double glazing is a great choice for any Flitwick home, and you can trust Fenster to provide a top-quality installation with excellent customer service. 

When you choose Fenster for your double glazing, you can truly make your Flitwick home one of a kind. There is an expansive selection of colours and finishes available, so you can pick something that matches your own unique tastes. Whether you’re looking for something bold and striking, or a more subtle and classic look, you have the power to create the aesthetics you dream of. With Fenster’s selection of finishes, you’ll be able to make your house stand out or blend in seamlessly with your street- the choice is yours.

We install a variety of goods, such as aluminium bifold doors, uPVC casement windows, flush casement windows, sliding sash windows, aluminium windows and doors, uPVC doors, composite doors, bifold doors, French doors and patio doors.

Our double glazing products are also incredibly low maintenance. By wiping them down with a damp cloth regularly, you can maintain their condition and reduce condensation without the need for expensive products or services. Here at Fenster, we care about the longevity of your double glazing products, maintaining quality aesthetics for even the busiest of homeowners. 

Our double glazing not only lets natural light flow through your windows, it also assists in lowering your energy bills all year round. During the winter it creates a strong thermal barrier that keeps warmth in while during the summer, it can let in more fresh air and reduce solar glare, reducing the need for air conditioning. With Fenster double glazing, we make sure that your home is comfortable and saves energy all year round. 

We also make the security of your Flitwick home a priority here at Fenster. With safer design choices, strong hinges and multi-point locking systems, our products are designed to deter even the most determined of thieves. Our products also benefit from high quality soundproofing, ensuring the reduction of environmental noise. This is perfect for homes on busier Flitwick streets. Trust us to create a safe, calm environment in your home, protecting you and your family for years to come. 

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Customer Service You Can Trust

At Fenster, we pride ourselves on high quality installations supported by caring and thoughtful customer service. We make sure to support your home improvement project every step of the way.

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Double Glazing Flitwick

FENSA Accredited Home Improvement Flitwick

By choosing a FENSA accredited installer for your double glazing, you can rest assured knowing that your home is backed by the highest quality building regulations. FENSA regularly evaluates and inspects the quality of building products to make sure that they meet the standards required for window and door replacements. FENSA accreditation helps to secure homes and give you confidence in the quality of your double glazing installation.

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Double Glazing Flitwick

Thermally Efficient uPVC Windows and Doors

At Fenster, we are devoted to providing our customers with high-performance and reliable double glazing with multiple benefits. Our double glazing and doors can reduce thermal loss and provide more insulation throughout your home all year round. They are also incredibly secure, giving you peace of mind.

With our products, you'll save money on your energy bills by not relying on the thermostat to keep you warm and cosy. We use high quality aluminium extrusions and polyamide thermal breaks to maximise the efficiency of our products. With Fenster, we provide clever insulation solutions to ensure more money stays in your pocket where it belongs.

At Fenster, we offer double glazing that helps your house stay warm in winter and cool in summer, whilst significantly reducing your carbon footprint. Our enhanced glass fibre and PU insulated chambers ensure that you can save energy, while being kinder to our environment. It is our mission to provide products that not only meet your needs, but actively contribute to greener living. Start your quote with us today for your perfect double glazing solution.

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Double Glazing Flitwick

The SureFlap Cat Flap

Our SureFlap cat flap is perfect for all cats, but especially those who have difficulty entering the house. It features a microchip scanner that prevents unwanted animals from accessing your Flitwick home, while allowing your beloved pet to come and go with ease. Installation options include both wall and door mounting, as well as tunnel installations that provide plenty of depth. With SureFlap cat flaps, you can ensure your pet always has safe, reliable access to their home.

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Our Process

Double Glazing Flitwick


We take the time to survey your property and work out the exact measurements for your double glazing solution, ensuring a bespoke installation.

Double Glazing Flitwick


We work with an in-house team of expert installers to make sure your home improvement goes smoothly and is stress-free.

Double Glazing Flitwick


Our aftercare policy sets us apart. We care about the longevity of our products- get in contact anytime to 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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