Double Glazing Bristol
Bristol's Window, Door & Conservatory Specialists
ZEN is a different kind of double-glazing company. Customer satisfaction is what makes us tick and drives us to ensure you're in safe hands every step of the way. Our small team of expert fitters ensures consistent, high standards that have earned us repeat business and glowing reviews.
I was very pleased with the work carried. Everything was done very efficiently and the results are very good. The window fitters were helpful and polite going the extra mile by building a step for me. I would certainly recommend them.
Lorna, Bristol
June, 2025
Found these guys from the reviews and they have been great throughout. Not pushy at all but very informative about what they could do and provided a quote quickly for significantly cheaper than a national chain.
Rowan, Bristol
February, 2025
We had a lovely experience with Zen. From the initial quotation to the planning of the job and then the fitters and execution of the job. All friendly and approachable people and the windows look great - thank you!
Sarah, Bristol
January, 2026
Windows
A-Rated Energy Saving Windows
All of our replacement double-glazed windows are A-rated as standard. They’re designed to help keep your home warmer and more energy-efficient, while strong, insurance-backed guarantees give you added peace of mind. With a wide choice of styles and finishes, you can enjoy windows that look right for your home and are built to perform for years to come.
Doors
Premium Replacement Doors
All of our quality replacement doors are engineered to high standards and expertly fitted by our local Bristol team. They feature high-quality hardware, with a wide choice of colours and finishes. Whether you’re looking for a front door, bifold, patio or French doors, we’ll help you find the right style for your home.
Conservatories
Replacement Conservatories
Experience the joy of a custom-built conservatory. Built with premium roofing systems from Wendland and Ultraframe, every ZEN conservatory offers top-tier durability and energy-efficiency, ensuring your investment stands the test of time and the British weather.
What Areas Do We Cover?
We’re proud to be one of the most trusted double-glazing companies in Bristol. Whether you’re replacing your windows, doors, or conservatory, we offer a reliable installation service across the city.
Ashley Down, Avonmouth, Bedminster, Bishopston, Bradley Stoke, Brentry, Coombe Dingle, Downend, Emersons Green, Filton, Fishponds, Frenchay, Hengrove, Henbury, Henleaze, Horfield, Lawrence Weston, Little Stoke, Lockleaze, Mangotsfield, Patchway, Pill, Portishead, Pucklechurch, Sea Mills, Shirehampton, Sneyd Park, Southmead, Staple Hill, Stockwood, Stoke Bishop, Stoke Gifford, Westbury on Trym, Whitchurch.
Does double-glazing add value to a house?
Yes, double-glazing can add value to your house. It improves energy efficiency, enhances the appearance of your home, and increases its security which are all features that appeal to potential buyers. Well-maintained double-glazed windows can also reduce noise, making your property more attractive, particularly in busy areas like Bristol.
Is double-glazing worth it?
Absolutely. Double-glazing is a cost-effective investment that reduces your energy bills by insulating your home more efficiently.
Over time, the savings on your heating bills will outweigh the initial cost. It also reduces noise, and enhances the security and appearance of your property.
How much does double-glazing cost?
The cost of double-glazing depends on factors like the size and number of windows, the materials used (e.g., uPVC, timber, or aluminium), and the style (e.g., casement, sash, or tilt-and-turn).
In Bristol, typical costs can range from £400 to £1,000 per window. For a precise written quote tailored to your home, book a no-obligation home visit.
What makes ZEN one of the best window companies in Bristol?
At ZEN Windows and Conservatories, we believe it’s our commitment to excellence, care, and consistency that sets us apart.
We don’t believe in pushy sales tactics or cutting corners. Instead, we offer a no-pressure quote process, honest pricing, and a 25-year guarantee for lasting peace of mind. From your first enquiry to the final installation, we’re with you every step of the way. Learn more about how we work.
How do you tell if your older double-glazing needs replacing?
If you’re feeling a chill in your home despite having double-glazing, it might be time to consider an upgrade. Signs such as cold draughts, shrunken glazing gaskets, cracks, or wear and tear on your window frames suggest your current system could be nearing the end of its lifespan.
Modern double-glazing offers significant improvements in durability and energy efficiency compared to systems installed a decade or more ago.
Advances in glass production, specialised coatings, and innovative spacer bars mean modern windows insulate far better. Combined with improved frames, gaskets, and enhanced security features, upgrading can transform the comfort, appearance, and performance of your home.
How long does double-glazing last?
The lifespan of double-glazing can vary depending on factors such as the quality of materials, installation, and maintenance. On average, well-maintained double-glazed windows can last between 25 to 30 years or more. Regular cleaning and occasional repairs can help extend their lifespan.
How long has ZEN Windows and Conservatories been established?
ZEN Windows and Conservatories has been proudly serving the Bristol community since 2015. For over 11 years, we’ve helped people improve their homes with high-quality windows, doors, and conservatories – always with a focus on care, consistency, and craftsmanship.
Our commitment to doing things properly has earned us a trusted reputation as one of the best window companies in Bristol. With a local team you can rely on and a service built on honesty and attention to detail, we continue to grow through recommendations from satisfied customers who value the ZEN experience.
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Contact Us
For general enquiries or to book a free no-obligation home visit, get in touch with our expert window installation team on 0117 321 5540.
Our opening times:
Monday - Thursday: 8:30am - 5:30pm
Friday: 8:30am - 4:00pm
Saturday: 9:00am - 12:00pm
Sunday: Closed