Industry-Leading Double Glazing

We are proud to offer homeowners in Biggleswade outstanding double glazing home improvement products that will bring their home into the 21st century. At Conserv-A-Tech we install a full range of double glazed windows and doors, as well as our full build conservatories, Edwardian conservatoriesorangeries, house extensions, garden buildings, skylights, warm roofs, roof refurbishments, and replacement roofs.

Biggleswade homeowners looking to upgrade their home with replacement double glazing products can rely on Conserv-A-Tech to help make their dreams a reality. Our impressive range of double glazing designs will perfectly complement any style of Biggleswade property. Whether you own a modern, period or heritage home, our team will endeavour to find you the perfect double glazing replacements.

All of the double glazing products that we install can be manufactured bespoke to a customer’s requirements.

Our products can be further tailored to match the existing architecture of your property, offering the choice of a range of colours, finishes, glazing options and hardware. We want to put you in the driver’s seat when it comes to making your next home improvement.

Homeowners need double glazing that stands the test of time and that’s exactly what we can provide. At Conserv-A-Tech, our double glazing is proven to greatly improve both the functionality and security of your property. All of the products that we install provide industry-leading levels of thermal efficiency and outstanding protection against even the most temperamental weather conditions.

If you have any questions or would like to find out more about our double glazing products and how they can transform your home, get in touch with our expert team of installers.

View Some Of Our Double Glazing Products

 

Trusted Installer

At Conserv-A-Tech, we always want to put our customers first, providing them with the service that they deserve. Our expert team have been in the industry for years and understand the importance of building a trusting relationship with their customers. We want you to feel that your home improvement project is in safe hands.

 

Low Maintenance

Our double glazing is all manufactured utilising the highest-quality materials to ensure longevity and durability. Upgrading your windows should mean enjoying less maintenance and heightened performance values. All that our double glazing frames will only require a wipe down with a damp cloth to keep them looking good as new.

 

Affordable Solution

We want all of our customers in Biggleswade to benefit from our exceptional range of double glazing. This is why all of our products are competitively priced and affordable. Our team will help you tailor the designs to suit your desired budget.

Biggleswade Double Glazing Prices

Get in touch today for competitive double glazing prices!

Double Glazed Windows

We offer a wide range of double glazed windows to ensure that Biggleswade homeowners can find the perfect solution for their window replacements. Our selection of uPVC windows can be installed in any type of Biggleswade property. Whether you own a modern, period or heritage property, our double glazing can be installed seamlessly and will complement the existing architecture.

Our heritage double glazing comes from industry-leading manufacturers, The Residence Collection. We can provide Biggleswade homeowners with double glazing solutions that can perfectly replicate traditional 19th-century windows.

Our double glazing windows are a stunning addition for period or heritage homes as they can be installed with classic woodgrain finishes.

Biggleswade homeowners can enjoy the low maintenance of our double glazing profiles as all that will be required to keep them looking good as new is a simple wipe down with a damp cloth. Gone are the days of expensive care regimes, these windows will mean that you can spend your time doing the things you love.

double glazed windows biggleswade

double glazed doors biggleswade

Double Glazed Doors

Our team can also offer a fully comprehensive range of doors that feature high-quality double glazing. Our uPVC doors are stunning solutions for any area of your Biggleswade home. We can install Patio doors, French doors, Stable doors, Residential doors and Bifold doors.

Our double glazing will offer homeowners a host of modern performance benefits, striking aesthetics and impressive security levels.

In addition to the above, we can offer you Aluminium Bifold doors and Aluminium Patio doors that are perfect for house extensions, especially kitchen extensions. These profiles can give Biggleswade homeowners the benefit of ultra-slim sightlines and unobstructed panoramic views. These double glazing doors are manufactured using the highest-quality aluminium frames and outstanding glazed panes.

Biggleswade homeowners looking for a new front door that features modern double glazing can browse our range of exceptional profiles. For those looking for heightened security levels may opt for one of our composite doors. These profiles feature a solid core which helps to keep your new double glazing working at an optimal level for longer than ever.

Ultraframe Brochure

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Performance Conservatory Brochure

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Prices for Double Glazing in Biggleswade

If you’re looking for competitive double glazing prices for your Biggleswade or Hertfordshire project, then Conserv-A-Tech can offer you exactly this. We can provide you with a vast collection of double glazing products that are suitable for every home.

Why not try our online quote engine and you can receive a free online quote for your new windows, doors, and even conservatories and extensions. All you need to do is enter in your double glazing specifications, and within minutes you’ll get a bespoke price.

You can also get in touch directly via our online contact form.

Latest News

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Customer Testimonials

Customer in Hertfordshire

14 January 2026

Everything about our experience with this company was positive. The quote was thorough and competitive. The work was undertaken in the expected timescale and to an excellent standard. The whole team were very professional and a pleasure to have in our home. We are delighted with our new conservatory, it is just as promised.

Customer in Hertfordshire

1 January 2026

Had an old polycarbonate roof and pvc french doors conservatory replaced with a warm deck solid roof with central lantern, and bifold doors. They also plaster boarded and plastered the walls, replaced the floor, new electrics, and fitted some internal doors that I supplied. Really happy with the result! It was completed over a month ago and we now spend most of our time in this room because of how light and pleasant it is. We explored different options of roof and door style with Alan, and it took a few iterations to get to the final design but I'm very confident we made the right choice. Alan's advice and willingness to help was always appreciated. The fitters did a great job, stayed fairly late most days to get bits done and tidy up. They were really accommodating when it came to fitting the internal doors I supplied (internal bifold doors, and an external fire door into the garage). It became clear the doors were not going to go in quite how I originally imagined, but Leon came up with a solution, talked me through it, and the result is better than what I originally wanted. I was really impressed with Leon's can-do attitude and determination to get the best result. They did have some issues with several glass panels from their supplier that had scratches or were wrong, but they already had replacements on order before I'd spotted them. That kind of thing goes a long way in building trust. Overall top job, completed to the original agreed price. Definitely recommend.

Customer in Hertfordshire

11 December 2025

We used Conserv-A-Tech for our garage conversion, and it was the best decision we made. They came highly recommended by family, and we can see why. From the first call with Alan to the in-person discussions, communication was simple, polite, and professional. The flexibility to make small changes to the scope, even while the team was on-site, was a real bonus, nothing was too much trouble. Eric, who scoped the project and took measurements, was extremely knowledgeable and had a clear vision. What made the process stress-free was Eric’s full project management, he organised everything, including plastering and electrics, so we didn’t need to source trades ourselves. His contacts are excellent, and the quality of work reflects that. Special mention to Phil (HJP Electrical) and Charlie the plasterer. The entire team was polite, hardworking, and clearly took pride in their work. Each day they arrived knowing exactly what needed to be done, and their attention to detail was outstanding. The site was left spotless every evening, and all rubbish was removed. The project was completed within the agreed timeframe, with no hidden costs thanks to accurate planning from the start. Eric was always just a WhatsApp message away and responded promptly and proactively. We’re delighted with the final finish and will definitely use Conserv-A-Tech again for future projects.

Customer in Hertfordshire

27 November 2025

Outstanding service, real people who care, and a door that’s absolutely perfect! These days, most door installers expect you to use an online design tool — you create your own door, submit it, get a quote, and hope for the best six weeks later. I’m quite IT-savvy and like to be independent, but when it comes to something as important as a front door, I needed to be 100% sure I was getting exactly what I wanted, with proper advice from a professional who actually cares. I requested around seven quotes and did seven designs — yet with most companies I was only about 60% sure how the final door would look and function, which isn’t good enough for me. Only two installers were willing to visit in person, and Conservatech stood out immediately. Allan was incredibly thorough, walking me through every single detail — from style to security — and his knowledge and patience were so reassuring. After that visit, I knew Conservatech was the right choice. Eric, the owner, then came to do the final measurements himself, making sure everything would fit perfectly. And when installation day came, Leon and Stewart did a fantastic job — they were professional, kind, and efficient, fitting the door beautifully despite heavy snow and rain - all in record time! Price-wise, Conservatech are very competitive, but their level of customer service and care puts them miles ahead of the competition. I couldn’t recommend them more highly.

Customer in Hertfordshire

8 July 2025

I needed a replacement for my old rotting wooden conservatory, a family member had their conservatory replaced by "Conserv-A-Tech" and recommended them to me for such an excellent job they had done. From initial visit to completion, the whole experience was very smooth and easy. Allen and Eric offered excellent advice on the design of the replacement conservatory, and the excellent fitters Leon and Ellis did a fantastic job of construction, with professionalism and attention to detail. Every night, the site was left spotless and tidy, all in all a fantastic experience from a great company, all completed on time and within budget. I am now looking forward to using my great new conservatory more and more. Many thanks for such an excellent job.

Customer in Central Bedfordshire

19 June 2025

From start to finish, this company was excellent. The salesman clearly knew his stuff and gave me a level of detail and choice that no one else did. He kept me informed without being invasive, and there was no hard sale or pressure. He managed to provide everything I wanted and at a really competitive price. The work itself was fantastic. Two very polite fitters with real attention to detail, respect for my property and complete professionalism. Left no mess and did a really nice job. Really happy, thank you!

Customer in Central Bedfordshire

13 April 2025

We wanted to share our experiences with Conserv-a-tech. This was a big investment for us but the process from beginning to end was friendly and professional at all times putting us at ease. The pre-planning and quote process was informative and the options were explained without any stress or pressure. Once the work was agreed and booked in we were kept informed as to what was happening and when. The build process involved both Conserv-a-tech people and other tradespeople, all were friendly and the work was completed professionally and with care and attention. The workspace was cleaned down and left in good order every day. We are absolutely blown away with how it all looks now it’s finished. It is all that we hoped for and so much more. We absolutely recommend Conserv-a-tech for any anyone thinking of an extension, garden room, patio etc..

Customer in Hertfordshire

12 February 2025

Conserv-a-Tech have just completed the installation of our new Living Roof and we are highly delighted with the result. The company were extremely professional from start to finish and very clean, tidy workers. From our first meeting with Alan followed by Eric and then the team including Leon and Aaron etc. We needed to be completed by a certain date and Eric pulled out all the stops to make it happen. He put two teams on the job for the first week and then later rescheduled the workforce to accommodate us. It was amazing that they completed just in time and we were really grateful. The roof looks amazing and we would recommend Conser-a-Tech to anyone who is looking to have a project completed professionally and to a very high standard. Many thanks to all the team.

Customer in Central Bedfordshire

3 December 2024

Having wanted to have an extension on our house we consulted the team at Conserv-a-tech. Eric had come up with a bespoke plan that had ticked all the boxes of what we required. Jack, Leon, Ayron and the rest of the build team were simply outstanding. Every evening all tools were cleared up, all working areas were cleared and their pace of work was insane. The standards of the work completed beat our expectations. Eric had gone above and beyond in terms of helping us out and I would definitely recommend Conserv-a-tech for anyone wanting to improve their living space.

Customer in Hertfordshire

October 2024

This is the third time we have used conservatech, and once again we are very impressed by the quality of workmanship, efficiency and courtesy. Will definitely use again, highly recommended.

Customer in Hertfordshire

October 2024

We had our leaking, old conservatory roof replaced with a tiled roof and also had new windows and doors replaced. After meeting Alan and Eric everything was done on time and very professionally. They both suggested ideas for our conservatory which we're very welcome. The drawings of the design were very clear and we were kept up to speed regularly via e-mail and phone calls while the the roof etc were being made. We were given plenty of notice as to the start date. The fitters were excellent, with minimum disruption and had to work in challenging weather conditions. Everything was left secure, clean and tidy after each day. Kim, the secretary / admin assistant always informed us promptly when the company had received our staggered payments. We are really enjoying our new conservatory, it looks amazing, warmer and we spend alot of time in it already relaxing. We would thoroughly recommend the company and thank you Eric and Alan for your wonderful team, who are a credit to you.

Customer in Bedford

October 2024

I had a considerable amount of work carried out on my house by this super company. A 'warm roof' brick built extension on my kitchen, An amazing orrangery to replace the original, rather tired conservatory. All the windows replaced with flush casement windows (Iove them) and all external doors replaced. Extensive work carried out externally... existing patio lifted and relaid, new paving slabs laid around the garage and extension, and new fences and gates. I could go on..!! I just want to say thank you Eric. You have a fabulous, hard working and conscientious team who worked in some awful weather conditions who on a lighter note managed to go through a mountain of sugar and teabags and a leaning tower of Piza stack of coffee pods and biscuits! All work is guaranteed and I do feel confident that if any issues/problems were to arise in the future they would be dealt with accordingly.

Customer in Hertfordshire

July 2024

I contacted Conservatech to fit me a new garage back door as I was very impressed with the work they did when they replaced my old conservatory a few years ago. A Very friendly and a high standard of work from all who were involved in the job. Thank you.

Customer in Cambridgeshire

June 2024

Conserv-A-Tech is a standout company. From start to finish, they have been exceptional: from Allan's advice on beautiful thirties-style windows and Eric's thorough structural checks for the bay window replacement to the quality installation by Craig, Steve, and Ellis. Kim, who was in the office, also kept me updated. I discovered that the old aluminium frame windows I'd lived with for 23 years had not been installed correctly, and the bay roof void needed to be insulated. I had been living in a wind tunnel—but no longer. The new windows have transformed my property. They are stunning - and I look forward to the energy savings they will bring this winter. The work was carried out as scheduled, and the team happily answered all my questions. They are true professionals who take pride in what they do. I have asked Conserv-A-Tech back to undertake more work at my home.

Customer in Hertfordshire

May 2024

We have just had our old Conservatory replaced by Conserv-A-Tech And the service we received was brilliant, The quality of the conservatory and the workmanship was first class, The two fitter’s Leon and Ayrron were so helpful and tidy and are a credit To the company and we would highly recommend this company to anyone.

Customer in Central Bedfordshire

May 2024

From their first visit to the completion of the job they were professional, efficient, polite and tidy. I cannot recommend them highly enough.

Customer in Hertfordshire

April 2024

After a few years putting off the rebuild of our old, wooden conservatory we are delighted with the finished result. We wanted something that would not look out of place with our character property and garden and this blends in really well. it also has all the positives of a modern extension. From the beginning with Allan talking us through the plans, colours etc to Eric and his team, especially Leon and Arryon, with the actual construction, they were all very professional, polite, clean and tidy. Would 100% recommend

Customer in Hertfordshire

January 2024

Conservatech have just built us a modern, insulated extension from the kitchen to the garden. From our first meeting with Allan to the last day I cannot fault this company. The whole team are polite, respectful, professional and a pleasure to have met them all. They all worked extremely hard and cleaned up every day before leaving. We would like to thank Allan, Eric, Jack, Keenan, Leon, Ayrron, Phil, Craig and Steve for everything they have done for us. We wish you all much deserved continued success. Ellie and Nev Hinchliffe

Customer in Bedfordshire

January 2024

Conservatech replaced my 30 year old leaky conservatory with a very modern and insulated 'extension' which is open-plan from the house, including an orangery-style lantern roof light and triple bifold doors. From my first meeting with Allan to the final delivered product, everyone I worked with from Conservatech (Allan, Eric, Leon, Ayrron, Craig, Steve, Ellis, Jack, Phil and Charlie) were wonderful. Three of my neighbours commented on how polite they were. They worked hard, were professional, they cleaned the site every day, they didn't cut any corners, and they delivered an amazing product

Customer in Hertfordshire

November 2023

One of the few exceptional companies we have dealt with over the years. Can highly recommend them for their professionalism, friendly approach and tidiness, especially as we have dogs. Just as important their after sales service was very good. Would have no hesitation in contacting Conserv-A-Tech to carry out additional work.

Customer in Stevenage

June 2023

Brilliant Company! Worked to budget, finished within timeframe, helpful and supportive throughout. Highly recommend with no hesitation. From the very outset we felt reasurred with Conservatech. Eric drew up plans which he submitted successfully to Planning. He project managed everything, helping with ideas and advising options. We also opted to have the whole garden excavated and paved with new fencing which looks amazing! We cannot praise highly enough Eric's team who were friendly, reliable and trustworthy. Their high quality of work and attention to detail speaks for itself. V.Happy!

Customer in Central Bedfordshire

12 August 2022

We now have a beautiful high-quality conservatory thanks to the huge amounts of skill and hard work provided by the outstanding team at Conserv-a-tech.

Customer in Hertfordshire

10 July 2022

y conservatory roof had been leaking for some time, despite several visits by the original installers. I now have a wonderful new roof which looks fantastic. The service from every member of their staff I dealt with was excellent.

Customer in Bedfordshire

21 June 2022

I now am the proud owner of a fantastic conservatory. Every single worker that came to put my conservatory up were polite and cleaned up after their works. They kept me updated as to who was coming next and what they would be doing.

Customer in Hertfordshire

18 May 2022

Conserv-A-Tech stood out, as they were a local company. No high pressure sales from Martin Beech. Your money is registered with the Government Scheme, so both parties are protected. Eric Knappett, owner and Surveyor came and measured everything accurately, so that the order could be placed with Ultraframe. Kim in the office kept me updated. Phil, electrician made electrics safe. Conserv-A-Tech stood out, as they were a local company. No high pressure sales from Martin Beech. Your money is registered with the Government Scheme, so both parties are protected. Eric Knappett, owner and Surveyor came and measured everything accurately, so that the order could be placed with Ultraframe. Kim in the office kept me updated. Phil, electrician made electrics safe.

Customer in Central Bedfordshire

29 April 2022

A brilliant service from start to finish, professional, helpful and a great job done by all involved.

Customer in Hertfordshire

11 March 2022

Everyone involved was punctual, polite and tidy. There was good communication with the office throughout. I am really happy with my new conservatory and would definitely recommend Conservatech.

Customer in Hertfordshire

22 December 2021

No pressure or false promises which made a refreshing change. All the tradesmen were polite, clean and tidy and very good at what they did. The final sign off and we are over the moon, has transformed a tired old cold conservatory into a room we cannot keep out of. Many thanks to the whole team.

Customer in Hertfordshire

2 December 2021

Every single tradesman they sent was helpful, polite, worked efficiently and was more than happy to explain any part of the process. Our conservatory was dilapidated, so everything had to come down, leaving just a brick wall. The work began when they said it would and finished almost to the day they expected.

Customer in Cambridgeshire

5 October 2021

I cannot recommend this company highly enough - from the initial meeting we had such a good feeling about them, no pushy sales, just honest & knowledgeable and very competitively priced. The survey was really helpful and Eric came up with things I hadn't considered which I'm so grateful for now. They took away our old conservatory and it all happened so quickly, no waiting around for them to do other jobs.

Customer in Hertfordshire

14 September 2021

he salesman was very efficient and produced excellent plans. The site visit was very good, everything was explained in detail including free removal of the old conservatory including carpet. The installers were great and clearly a good team. I would recommend Conserv-a tech if asked.

Customer in Hertfordshire

1 September 2021

Outstanding company. Superb quality of workmanship. Attention to detail was second to none. The sales rep, surveyor, builders, installers, electrician, plasterer were all superb.

Customer in Central Bedfordshire

15 May 2021

Excellent friendly service and excellent value for money compared to large National companies. Would certainly recommend them.

Customer in Hertfordshire

10 March 2021

An excellent job by Conservatech from the initial survey/quote to the finished result - it's like a whole new conservatory, and we're wondering why we put up with the old polycarb roof for so long! Great work by the fitters (Leon and Connor) - tidy, courteous, and hard-working in sometimes difficult weather.

Competitive Double Glazing Prices

Get in touch with our team today and benefit from competitive double glazing prices!

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