Your Trusted Partner for Double-Glazing in Bristol
Local expertise
All our installers are highly experienced professionals who live and work locally in Bristol.
Quality Products
Our commitment to excellence is backed by a 25 year guarantee, providing you with peace of mind.
Reliability
Our commitment to punctuality means we do everything we can to stick to start dates and deadlines.
No-Pressure Sales
We provide written quotes without any pressure, allowing you to make a decision at your own pace.
Made To Measure
Everything we supply is tailored to your unique requirements and preferences.
I have used Zen twice for double glazing. Both times, Zen have been helpful, clear about what will happen & when, have kept their promises and treated my home with respect.
Liz, Bristol
March, 2025
Zen have been fantastic to work with from start to finish and I cannot recommend them highly enough! We’re warmer, it’s quieter and we’re delighted!
Katie, Bristol
Feb, 2025
Zen sorted two windows for us... no pushy sales people, competitive quote, clear schedule and payment terms and fab installers who came on time & left the place spotless!
Tom, Bristol
Feb, 2025
Windows
All of our replacement windows, whether casement, bay, sliding sash, or tilt and turn, are A-rated as standard. They providing exceptional energy-efficiency and peace of mind with solid, insurance-backed guarantees. Enjoy the perfect blend of style, durability, and comfort tailored to your home’s needs.
Doors
All of our doors are crafted with cutting-edge innovation and premium hardware, offering unbeatable security, energy efficiency, and lasting style. Our range includes composite, bifold, French, and patio doors, designed to suit every type of home. Discover replacement doors that truly redefine excellence.
At ZEN Windows and Conservatories, we pride ourselves on being your trusted partner for all of your double-glazing, triple-glazing, windows, doors or conservatory needs.
Our team is all about local expertise. We're Bristol-based, and everyone on our team lives right here in the city. That means a personalised service and accountability you can rely on.
We're all about exceeding your expectations. We strive for 100% satisfaction, always aiming to over-deliver on our promises. Your feedback is crucial to us, helping us ensure you're in safe hands every step of the way. You can count on ZEN for the highest quality double-glazing in Bristol and the surrounding area.
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, 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.
Quality Guaranteed
We are a CERTASS certified company and approved to supply and install replacement double-glazed windows and doors in full compliance with current Building Regulations. We supply the superb Aluplast and Veka suite uPVC window and door systems and specify Ultraframe and Wendland for all of our replacement conservatory roofs. All of which are second to none in terms of quality and durability.
Our uPVC windows are all fabricated in the United Kingdom and we only use top-of-the-line double-glazing, triple-glazing and door systems that are energy-efficient and A-rated as standard. Plus, our eco-friendly practices mean we recycle old materials whenever possible.
Our guarantee? It's rock solid. We cover moving parts and glass units for 10 years, and white uPVC frames for 25 years. That's peace of mind you can trust.
We take pride
Pride and professionalism are at the heart of everything we do. We're vigilant about quality, and proactive in dealing with potential issues.
On time
We genuinely care about meeting your timelines and go to great lengths to ensure we stick to start dates and installation deadlines.
Glowing reviews
Our small, dedicated team of installers ensures consistent, high standards that have earned us repeat business and glowing reviews.
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.
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.
Frequently Asked Questions
