Double Glazing Installation in Croydon, Coulsdon & Surrey
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Glitz Windows & Conservatories Ltd supplies and installs high-performance double glazed windows and doors across South London and Surrey — backed by 25+ years of experience, a 10-year guarantee, and FENSA registration
- FENSA Registered
- 25+ Years Experience
- 10-Year Guarantee
- Free Home Survey
What is double glazing?
How Double Glazing Works
Double glazing uses two panes of glass separated by a sealed gap — typically filled with argon gas — which acts as a thermal and acoustic barrier. Unlike single-glazed windows, the trapped gas layer dramatically slows heat transfer, keeping warmth inside in winter and heat outside in summer.
At Glitz Windows, every double glazed unit we install meets or exceeds current UK Building Regulations (Part L) and carries a minimum C Window Energy Rating (WER). A-rated units — which reduce heat loss by up to 50% compared to single glazing — are also available.
Why upgrade?
Benefits of Double Glazing
Lower energy bills
A-rated double glazing reduces heat loss through windows by up to 50%, cutting annual heating costs by £100–£175 for a typical semi-detached home.
Noise reduction
Double-layered glazing reduces external noise by up to 35 decibels — ideal for properties near busy roads, railways, or flight paths across Croydon.
Noise reduction
Double-layered glazing reduces external noise by up to 35 decibels — ideal for properties near busy roads, railways, or flight paths across Croydon.
Higher EPC rating
Replacing single glazing with A-rated double glazing can improve your home’s Energy Performance Certificate (EPC) rating by one or two bands, increasing its market value.
Reduced condensation
The warm inner pane of a quality double glazed unit stays significantly warmer than single glass, greatly reducing interior condensation and damp problems.
Low maintenance
uPVC and aluminium frames require no painting or staining — just an occasional wipe with soapy water. Designed to last 20–25+ years with no fuss.
Get a free quotes
Comprehensive Glazing Solutions for Every Property
If you require an entire house refurbishment or just a replacement of your double glazed windows due to damage, our services at Glitz Windows will suit you well.
Custom Glazed Windows and Doors
We do not follow the principle of “one size fits all.” We offer products ranging from traditional casement styles to sash windows for your property. If you want to connect your home to the garden space, our glazed doors, such as bifolds and patio sliding doors, are a good choice.
High-Performance uPVC Double Glazing
uPVC continues to be the preferred material among UK households and here’s why. It demands no maintenance at all and is highly durable and resilient to weather conditions. When calculating the uPVC double glazed cost, you must see the whole thing as an investment since this type of window improves your home’s value and needs only occasional cleaning with soapy water.
Double Glazed Glass Replacement
In some cases, you might have great frames, yet the “blown” or misted glass units are not working properly. Our double glazing installation services also offer glass replacement. We will replace any malfunctioning glass with better glass to improve your thermal performance without installing a whole new frame.
uPVC vs Aluminium Double Glazing
We work with both major frame materials. The right choice depends on your property style, budget, and maintenance preferences.
uPVC Double Glazing
- Excellent thermal performance
- Virtually zero maintenance
- Wide colour range including anthracite grey and woodgrain
- 20–25 year lifespan
- Most cost-effective option
- Suitable for most property types
Aluminium Double Glazing
- Ultra-slim sightlines — maximum glass area
- Stronger than uPVC — wider spans possible
- Ideal for contemporary and commercial properties
- Powder-coated in any RAL colour
- 25–40+ year lifespan
- Higher initial cost — premium aesthetic
Why Homeowners Choose Glitz Windows
Double Glazing Frequently Asked Questions (FAQs)
How much does double glazing cost?
The price for double glazing is based on the size of the window, the type of material used (uPVC/Aluminum) and quantity. For the best possible quote, we suggest that you have a free survey conducted at your property.
How long does double glazing installation take?
An installation process that will cover an entire home may usually take anywhere from one to three days. However, installing windows and glazed doors will only take a few hours.
What is the lifespan of double glazed windows?
Good quality double glazing will last from 20 to 25 years on average. Nevertheless, with proper maintenance and expert installation from Glitz Windows, good-quality double glazing can function efficiently for much longer.
Can you repair misted or "blown" double glazing?
Yes. When you notice condensation between the panes, it means that the seal is broken. We have a solution for you – we replace your glazing with new double glazing, but keep the old frames intact.
Does double glazing really reduce energy bills?
Certainly. With double glazing, the amount of heat escaping from your windows is reduced by 50% and as a result, the temperature on your thermostat can be turned down considerably.
Do I need planning permission for double glazing?
Normally, no permission is required for the replacement of your windows if similar ones are installed. Nevertheless, if you are living in a Conservation Area or a Listed Building, there might be special considerations.
Transform Your Home Today
Ready to enjoy the warmth and quiet inside your home? Don’t wait any longer to invest in old-fashioned glazing that doesn’t work. We provide tailored solutions across the region, including Double Glazing Croydon, Double Glazing Caterham, Double Glazing Crawley, and Double Glazing Coulsdon. Try our service like hundreds of other satisfied customers.
What Do We Offer
Double glazing
GLITZ Windows & Conservatories Ltd provides premium double glazing solutions in Croydon, delivering superior insulation, enhanced security, and long-term value for homeowners and businesses.
Upvc Windows
At GLITZ Windows & Conservatories Ltd, we offer high-performance windows in Croydon that enhance your property’s energy efficiency, security, and aesthetic appeal.
Composite Front Doors
At Glitz Windows, we supply and install composite front doors in Sutton that provide the utmost in strength, style, and energy efficiency. At Glitz Windows, we provide doors designed to withstand
Windows and Doors
If you’re searching for high-quality windows and doors in Sutton, Glitz Windows is here to deliver. We specialise in supplying and fitting uPVC windows, double glazing,
DOORS
At GLITZ Windows & Conservatories Ltd, we supply and install high-quality doors in Croydon that combine strength, insulation, and visual appeal. Whether you’re replacing your front door,
Porches
Enhance your home’s entrance with a custom-built porch from GLITZ Windows & Conservatories Ltd, Croydon’s trusted specialists in porch design and installation.
Bifold Doors
Transform your home or business with sleek, modern bifold doors from GLITZ Windows & Conservatories Ltd, your trusted specialists in Croydon. Our high-quality bifold door
Roof Lantern & Rooflight
At GLITZ Windows & Conservatories Ltd, we design and install stunning roof lanterns and rooflights in Croydon, bringing natural light and architectural elegance to your home
Conservatories
Add light, space, and value to your home with a beautifully crafted conservatory from GLITZ Windows & Conservatories Ltd, Croydon’s trusted specialists in bespoke home extensions.
Make Appointment
Get a free quote with no obligation - Contact us now
Have a unique idea or specific requirements? Our team specialises in tailored window and door solutions to suit your vision—built to exact specifications and installed with precision.
- 53 Chipstead Valley Rd, Coulsdon CR5 2RB
- info@glitzwindows.co.uk
- 020 3370 7955
- Mon-Fri 08:00 - 17:00
Make Appointment
Get a free quote with no obligation - Contact us now
Have a unique idea or specific requirements? Our team specialises in tailored window and door solutions to suit your vision—built to exact specifications and installed with precision.
- 53 Chipstead Valley Rd, Coulsdon CR5 2RB
- info@glitzwindows.co.uk
- 020 3370 7955
- Mon-Fri 08:00 - 17:00
Our Process
Four Steps to Order Window for Your Home
