Cristal Windows, Doors & Conservatories Ltd provides expert double glazing installation to enhance your home’s energy efficiency, security, and style. We also offer triple glazing for homeowners seeking even greater insulation and performance. With over 40 years of experience, we offer professional installation and premium products across Berkshire, Hampshire, Surrey and surrounding areas.
Expert double glazing installation across Hampshire, Berkshire & Surrey. Double glazed windows from FENSA registered specialists with 40+ years experience.
Expert triple glazing installation across Hampshire, Berkshire & Surrey. A++ energy rated triple glazed windows with 40+ years experience, FENSA registered.
Upgrade your home with high-security, energy-efficient, and stylish Garage Doors designed to enhance both safety and comfort.
Join thousands of homeowners across the UK upgrading their conservatories with a high-performance insulated tiled roof conversion.
Revolutionize your space with innovative New Wave Doors, offering smooth operation, panoramic views, and modern aesthetics.
Many homeowners struggle with poorly insulated windows and doors that make their homes uncomfortable, increase energy costs, and compromise security. If you’re experiencing drafts, condensation, or rising utility bills, your old glazing might be to blame.
Tired of these issues? We’ve got the perfect solution - scroll down to learn more!
At Cristal Windows, we install high-performance double glazing or triple glazing to improve your home’s comfort, security, and style.
Arrived on time, discussed their work beforehand and then got on with the job efficiently. Cleared up, leaving the site tidy and actually replaced furniture to its original position!
High-quality double glazing and triple glazing, expert craftsmanship, and a stress-free experience - trusted by homeowners for over 40 years.
Cristal Windows, Doors & Conservatories Ltd holds accreditations from FENSA and other industry leaders, ensuring top-tier quality, safety, and reliability.
With 40+ years of experience, we use high-quality uPVC, timber, and aluminium to create durable and stylish windows & doors.
As a family-run business, we focus on guiding you to the best solution—no pushy sales, just expert support.
Cristal Windows, Doors & Conservatories Ltd is accredited by FENSA, Which? Trusted Trader, and other leading industry bodies, ensuring top-tier quality, safety, and reliability for every installation.
Explore our wide range of high-quality uPVC, timber, and aluminium windows and doors, plus conservatories, roofline solutions, and canopies—designed for style, security, and energy efficiency.
Upgrade your home with high-performance triple glazed and double-glazed windows, designed for energy efficiency, security, and style.
Enhance your home's security and aesthetics with our durable, stylish doors, available in uPVC, aluminium, and composite materials.
Expand your living space with a custom-built conservatory, offering natural light, energy efficiency, and year-round comfort.
Experience sleek, modern, and ultra-durable aluminium windows and doors, built for strength, security, and minimal maintenance.
Protect your home from the elements with low-maintenance, long-lasting roofline solutions, including fascias, soffits, and gutters.
Add kerb appeal and weather protection with our durable GRP over-door canopies, available in various styles.
Achieve privacy and light control with integrated internal blinds, sealed within the glazing for a sleek and maintenance-free solution.
Revolutionize your space with innovative New Wave Doors, offering smooth operation, panoramic views, and modern aesthetics.
Join thousands of homeowners across the UK upgrading their conservatories with a high-performance insulated tiled roof conversion. Whether you’re building a new sunroom or replacing an outdated glass or polycarbonate roof, our Warmer Roof system offers beauty, durability, and exceptional thermal efficiency.
A++ energy rated triple glazing expertly installed across Hampshire, Berkshire, and Surrey, including Aldershot, Alton, Basingstoke, Farnborough and surrounding areas. Triple glazed windows are available in uPVC, timber, and aluminium frames, each offering distinct advantages.
See why homeowners trust Cristal Windows for high-quality triple and double glazing and expert installations. Read real reviews from satisfied customers.
Great service from Steve from start to finish, helpful advice and hassle free ordering. The installation of the bifold doors and windows by Dennis and Robbie was very efficient and tidy. I’m very happy I chose to use Cristal Windows and would recommend them to anyone.
I had the roof of the conservatory completely replaced in March 2025 and was very satisfied with the standard of service and the quality of the building work at the time and was happy to provide a review then. After more than a year I can confirm that the replacement structure has performed well as have the new doors that I had installed into the garden. I would use the services Cristal Windows again and am also pleased to recommend the business.
From start to finish the information and communications from Steve were excellent. The Rehau products chosen and supplied are of a premium range of windows and doors that we are extremely happy with. Dennis and son Robbie fitted them with an attention to detail that is unfortunately, not always found nowadays and cleaned up afterwards on a daily basis. We have no hesitation in recommending this company and their workmanship to anyone considering this kind of home improvement.
I had all my windows and doors replaced by Steve and his team. From the initial contact right the way through to completion the communication was spot on. Dennis and Robbie who did the installation were very friendly and worked efficiently keeping the place clean and tidy as they worked. I did encounter a problem with one of the products but it was dealt with quickly and professionally.
After much research we chose Cristal to replace some of our windows. I found them very easy to work with right from the start. They were very accommodating when I made some slight changes to the requirements and came up with a very competitive quote which was not accompanied with the “hard sell” attempts I got from some other companies. The installation was completed smoothly by Dennis who left everything clean and tidy at the end.
We’ve had Cristal Windows carry out several installations over the years and have been really pleased with both the service and the quality of workmanship throughout. They first fitted new soffits and fascias in September 2020. This was followed by new front windows and a front door installed in September 2023, and finally all rear windows and a back door fitted in February 2024. The workmanship on every job has been excellent.
Find quick answers to common questions about our triple glazing and double glazing products, installation process, pricing, and more.
Steve, the owner, comes to look at the areas you are considering, takes approximate measurements and talks through your options. It is a relaxed conversation, not a sales pitch, and you are under no obligation. If you go ahead, a detailed made-to-measure survey follows before anything is manufactured.
No. We leave you with a clear written quotation to consider in your own time. There are no one-day-only discounts and no pressure to commit while we are with you, so take as long as you need.
Usually under an hour, though it depends on the size of the job and how much you want to go through. Some people want a quick look and a price, others prefer to discuss every detail, and both are fine.
We keep our prices competitive, but we do not cut corners on the things that matter: the quality of the product, the standard of the installation and properly employed, experienced fitters. Most modern windows look similar, so the real difference is how well they are fitted and who stands behind the work afterwards. After more than 40 years of trading, we would rather do a job once and do it properly.
Yes. Cristal Windows is FENSA registered, a Which? Trusted Trader rated 4.9 average based on 90+ reviews, a GGF member of over 30 years and a Rehau Authorised Partner.
We are a supply-and-install company, so everything we provide is fitted by our own team. We do not offer repairs, emergency glazing or supply-only orders, which lets us stand behind the full job from survey to completion.
Have questions about double glazing, triple glazing, or when to replace your windows? Our expert-written blog answers the most common questions UK homeowners ask — from timing your installation to choosing the right frame.
Cristal Windows, Doors & Conservatories Ltd is an Introducer Appointed Representative (Financial Services Register No. 1009945) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.
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We offer expert installation of high-quality triple and double glazed windows, doors, bi-fold doors, patio doors, composite doors, conservatories, and roof lanterns. If your home is located outside of the areas we typically cover, feel free to give us a call—we’re happy to discuss availability and may still be able to arrange an installation in your area.
When you choose Cristal Windows for your local double glazing and triple glazing installations, you are not only choosing an ethical, professional and family run business, but also a window company that provides high-quality products. We take the utmost care when installing our range of windows, doors, and conservatories and are accredited by trustworthy schemes such as FENSA.
We offer installations to homeowners in Berkshire, Hampshire, or Surrey.