Replacement Windows, Doors & Double Glazing in Leicester
Trusted Across Leicestershire Since 1998
Rated 4.9★ on Google and Trustpilot from 200+ reviews
Leicester’s Window & Door Specialists
From energy-efficient double glazing to secure composite doors, our experienced in-house team handles everything from survey to installation and aftercare, delivering security, energy efficiency and lasting performance at competitive prices.
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Double Glazing in Leicester
Explore Our Range of Windows, Doors, Conservatories & More
We supply high-quality windows and doors at affordable, transparent rates, with flexible finance options and no-pressure quotes. Built on a foundation of customer satisfaction, we have always put homeowners first. Every installation is completed by our experienced in-house team with meticulous attention to detail from survey to aftercare.
Rated 4.9★ on Google and recognised with multiple industry awards, Phair Windows has built a reputation as one of Leicester’s most trusted window replacement companies. Browse our product range below and find the perfect fit for your home.

A Local Family-Run Business
Home Improvements in Leicester Since 1998
- 4.9-Star Google Rating
- 0% Finance Available
- Family-Run Since 1998
- Installed By Our Team
- Manufactured In-House
- Assure-Certified Installer
- 10-Year Insurance Guarantee
Premium uPVC Windows & Doors, Made in Leicester
View Our Windows & Doors in Our Leicester Showroom
Visit our new showroom at 49 Clifton Road in Aylestone, Leicester (LE2 8AA), where our friendly team of home improvement experts will be happy to help. You can explore our range of double glazed windows and secure doors, and see how the right products can improve your home.
Book an appointment with our experienced team today, and let us help you choose the perfect products for your home, with multi-point security locks, energy-efficient glazing and a robust warranty.
Enhancing Homes Since 1998
Secure, Energy-Efficient Windows & Doors for Leicester Homes
Installing A-rated double glazing can help reduce heating bills while improving comfort and security. We supply and install a wide range of windows and doors in a choice of colours, styles and finishes.
Our uPVC windows and doors are made to measure using the ADVANCE 70 system. Designed to meet UK building regulations, they offer multi-chambered insulation, strong weather performance and PAS 24 security options. For composite doors, we also offer Solidor and Solid Core designs, combining solid, secure construction with a premium choice of colours and glazing.
Whether you’re looking for new casement windows, bay windows, sash windows, aluminium windows, bifold doors, patio doors, or a conservatory roof replacement, we’re ready to help.
0116 456 0242
Market Leading Window Replacement Specialists
Your Hassle-Free Journey With Phair Windows
Book a home visit or visit our showroom and speak to our friendly team about your ideas.
Once you’re happy to proceed, we’ll carry out a full site survey before your products are made to order.
We install on a day that suits you, removing and responsibly disposing of waste under our licence.
Once complete, we provide your relevant certification and 10-year guarantee documentation.
Customer Reviews
Here at Phair Windows, our fantastic customer reviews proudly make us one of Leicester’s favourite window and door companies, as rated on Google, Facebook, Bark, Yell and Trustpilot.

Proudly Serving Leicester & Leicestershire
For over 25 years, Phair Windows has been trusted for premium double glazing, replacement windows, secure doors, beautiful conservatories, and home improvements across Leicester, Blaby, Braunstone, Wigston, Oadby, Aylestone, Market Harborough, and the wider Leicestershire area.
Trusted, Certified & Award-Winning Installers
Why Choose Phair Windows?
Choosing a window company is a big decision, and one that should come with complete confidence. At Phair Windows, our products are manufactured on-site and installed by our experienced team. This gives us greater control over quality, finish and service from start to finish.
We believe in clear pricing, honest advice, expert installation and dependable aftercare – not sales pressure. Every product we manufacture and install is backed by a 10-year guarantee, giving homeowners across Leicestershire added peace of mind.
Certified, Insured & Licensed
Assure-certified installer with £5m public liability insurance and a waste carrier licence.
10-Year Guarantee
Every product we supply and install is covered by our 10-year insurance-backed guarantee.
Manufactured In-House
Locally made-to-order windows and doors using the premium ADVANCE 70 System.
Case Studies
Our Recent Projects Across Leicestershire
Take a look at some of our latest home improvement projects across Leicestershire. From new porches to conservatory and roof replacements, each case study showcases the quality of our trusted window fitters, their attention to detail and commitment to customer satisfaction.



