uPVC Windows in Swindon
Up to 40% Off
Get up to 40% off with our part exchange, find out how much your old windows, doors or conservatory are worth with a free design and quote visit.
Multi Award-Winning Window Specialists
Trusted by 1,000+ UK Homeowners
Flexible Finance Offers
uPVC Windows in Swindon
Up to 40% Off
Get up to 40% off with our part exchange, find out how much your old windows, doors or conservatory are worth with a free design and quote visit.
Multi Award-Winning Window Specialists
Trusted by 1,000+ UK Homeowners
Flexible Finance Offers
Get Your Free Quote
Complete the form below, and we will get in touch as soon as possible
Get Your Free Quote
Complete the form below, and we will get in touch as soon as possible
AFFORDABLE
Spread the cost over up to 10 years or “buy now, pay in 2026”.
4 WEEKS LEAD TIME
Full installation from order to completion in just four weeks.
10-YEAR GUARANTEE
Exceptional quality materials. Safeguarding your investment for years to come.
All Types & Colours of uPVC Windows.
One Trusted Installer.
From Classic Casement to Tilt & Turn – We've Got You Covered
Casement Windows
Flush Casement Windows
Sliding Sash Windows
Bay & Bow Windows
Tilt & Turn Windows
Heritage
Double Glazing
Triple Glazing
1,000+ Happy Customers
The company and products you can trust
We are a multi award-winning, Swindon based professionally run double glazing company installing a market-leading selection of uPVC windows and doors. Our double-glazing services are available in Swindon, Marlborough, Cirencester, Chippenham, Oxford, Newbury, Gloucester, Cheltenham, Melksham and Devizes. Use our online contact form for a free no obligation quotation.
4.6
4.6
9.96
"Couldn’t be happier with the service from NexGen Windows, they looked after us from start to finish. We had a new front door, bay window and 4 other windows installed within 2 days, the house was kept tidy throughout and the attention to detail was brilliant, it has transformed our house. Will deffo be using again and recommending to everyone." - Josh
"The team at NexGen windows were spot on from start to finish, the price was very fair and the guys were in and out within 2 days. The new windows and doors look great and really have transformed our house. Will deffo be using NexGen again and recommending them too everyone." - Denis
"Double Glazing has come a long way. Professional sales people, although you still need to negotiate on price, good quality product, and experienced fitters, who are friendly, clean and tidy, and know what they are doing. A pleasure doing business with you from start to finish." - Neil Reddaway
"They cut the damaged wall under the window making the space for the new door and window. They take a lot of care to avoid dust and clean everything to finally install the door. Other chaps plastered the surfaces and installed the couple of tiles to obtain a 100% satisfaction work. Everything was smooth and the result is awesome." - Sarah O'Donnell
Why Choose NexGen?
The company and products you can trust
We will always treat you with respect and provide a friendly professional service.
We will work with you to make sure you are getting exactly the products that you want.
We will deal with your enquiries or concerns promptly, efficiently and accurately.
We will listen to, and act on your feedback.
We will always meet our responsibilities towards our guarantees.
Multi award-winning local business
Recognised for excellence in quality and service across Wiltshire and surrounding areas.
Expert craftsmanship
All installations are carried out by highly skilled master craftsmen who maintain exceptional standards and treat every home with care and respect.
Next-generation products at fair prices
Offering the very latest designs and technologies at reasonable, transparent prices.
Fully certified installations
As CERTASS members, all products are fitted to meet the latest building regulations, with certificates provided for property resale purposes.
Comprehensive guarantees
Every installation comes with an insurance-backed 10-year comprehensive guarantee.
Trusted by the Consumer Protection Association (CPA)
Regularly assessed to maintain CPA membership, with outstanding customer satisfaction scores: 92% rated “Excellent”, 8% rated “Very Good”.
40+ Years Experience in Double Glazed Windows
We are a Certass trade association approved and a consumer protection approved company. All of our double-glazed windows and doors are installed to the very highest standard with a 10 years guarantee.
How It Works?
Our process is simple and fast
Consultation
Begin with a free consultation to discuss your needs and preferences with our experts. Once you're happy with your choice, we will provide you with a free quote.
Planning
Following the consultation, a detailed survey is conducted to assess the project scope. This includes providing you with a final quote, ensuring transparency and clarity in pricing.
Scheduling
Once the quote is accepted, we work with you to schedule the project at a time that's most convenient for you, prioritising minimal disruption to your daily life.
Installation
Our experienced team carries out the installation. They walk you through how to use the locking and opening mechanisms and provide helpful advice on maintaining your new products to keep them in top condition.
FAQ
What types of windows do you supply and install?
We supply and install a wide range of window types including casement windows, sliding sash windows, tilt & turn, and heritage style windows. All can be customised in materials like uPVC, aluminium or timber-alternative finishes.
What material options are available and which is best for my property?
We offer uPVC (cost-effective and low maintenance), aluminium (slim frames, modern look) and timber-alternative finishes (traditional aesthetic with advanced performance). We can advise on the best choice depending on your property’s age, style and insulation needs.
What guarantee or warranty do you provide?
All our window installations come with a 10-year guarantee.
How do your windows improve energy efficiency and reduce draughts?
Our windows are designed to be draught-free and energy efficient, helping keep your home warmer and reduce heating bills. We use modern glazing, weather-seals and high performance frames.
How long will the installation take?
The exact time varies depending on the number and size of windows, but typically installation is completed in a day (or over a short period) with minimal disruption. We’ll provide a schedule when you book.
Our Awards
We aim to continue providing excellent options for our customers.
Get a Wonderful New Look For Your Home!
Let's Start With a Conversation.
10 years guarantee on all products.
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