Windows Installation & Replacement in the UK
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You know that draught sneaking in around the frame on a January morning, no matter how many times you have shut the window? Or the foggy condensation sitting between two panes that never clears? Those are not just annoyances, they are your windows telling you something’s wrong. After 25 years of fitting and replacing windows across the UK, we have heard that story more times than we can count.
At Glitz Windows & Doors, we help people fix a problem that’s been quietly costing them money, comfort and sleep. Whether you need one window sorting or an entire property done, we will handle it properly from the first visit to the final check.
High-Quality Window Solutions for Homes & Businesses
Every home is different. A 1930s semi in Croydon has different needs to a new-build flat in Sutton or a commercial unit in Crawley. Good windows don’t come from a one-size-fits-all catalogue, they come from actually listening to what you need.
Energy-Efficient Double Glazed Windows
Modern energy-efficient double glazed windows use argon gas between the panes and low-emissivity glass that reflects heat back into the room. Your home holds onto warmth better in winter, stays cooler in summer and your boiler doesn’t have to work as hard. Over time, that shows up on your energy bills in a way that matters.
Secure & Durable Window Installations
Every installation comes with multi-point locking as standard. Our uPVC and aluminium frames don’t rot, don’t warp and don’t give way easily. For ground-floor windows or anyone who wants extra reassurance, we can also supply laminated or toughened glass — the kind that doesn’t shatter into dangerous shards if struck.
Modern Window Replacement Services
Seals fail. Handles stop working. Old frames leak heat you’re paying for. Our replacement service is straightforward — we get in, do the job with minimal disruption and leave the place clean. Most single windows take a morning. We won’t drag it out.
Get a free quotes
High-Quality Window Solutions for Homes & Businesses
Every home is different. Croydon has different needs to a new-build flat in Sutton or a commercial unit in Crawley. Good windows don’t come from a one-size-fits-all catalogue, they come from actually listening to what you need.
Energy-Efficient Double Glazed Windows
Modern energy-efficient double glazed windows use argon gas between the panes and low-emissivity glass that reflects heat back into the room. Your home holds onto warmth better in winter, stays cooler in summer and your boiler doesn't have to work as hard. Over time, that shows up on your energy bills in a way that matters.
Secure & Durable Window Installations
Every installation comes with multi-point locking as standard. Our uPVC and aluminium frames don't rot, don't warp and don't give way easily. For ground-floor windows or anyone who wants extra reassurance, we can also supply laminated or toughened glass — the kind that doesn't shatter into dangerous shards if struck.
Modern Window Replacement Services
Seals fail. Handles stop working. Old frames leak heat you're paying for. Our replacement service is straightforward — we get in, do the job with minimal disruption and leave the place clean. Most single windows take a morning. We won't drag it out.
How Much Do New Windows Cost in the UK?
A standard uPVC casement window, supplied and fitted, typically starts between £300 and £600. Aluminium or timber costs more. Bay windows usually run from £1,500 to £4,000 or beyond. Sash windows sit somewhere in between depending on the material.
For a family home getting all windows replaced, most people are looking at £5,000 to £12,000 depending on the spec. We give you a full written quote after the survey — no vague estimates, no extras appearing halfway through the job.
Benefits of Installing New Windows
- Improved Home Energy Efficiency: Good double glazing cuts heat loss significantly. Warmth stays in the room rather than bleeding through the glass — lower bills, a home that feels the way it should.
- Better Security Against Break-Ins: Properly fitted windows with multi-point locks are a much harder target. It’s one of the simpler ways to improve home security without major building work.
- Noise Reduction for Busy Areas: Near a main road or railway? The right glazing specification makes your home noticeably quieter. You feel that difference every single day.
- Increased Property Value: Buyers notice windows. New double glazing with a proper energy rating makes a property easier to sell and often supports a stronger asking price.
- Improved Kerb Appeal: Fresh windows change how a house looks from the street immediately — whether that’s white uPVC, anthracite grey aluminium or painted timber on a period home.
Window Styles
Casement Windows
The most common choice in the UK. Casement windows open outward on side hinges, ventilate well, clean easily and suit almost any property.
Bow Windows
Made from a series of gently curved window panels, bow windows create a wider view, bring in more natural light and add extra space to a room.
Bay Windows
Projecting outward from the wall, bay windows increase interior space, improve natural light and add character to both traditional and modern homes.
uPVC Windows
Low-maintenance, energy-efficient and durable, uPVC windows offer excellent insulation and are available in a range of colours and styles to suit any property.
Tilt & Turn Windows
One handle position tilts the top inward for ventilation; the other swings the whole frame open. Ideal for upper floors or anywhere hard to reach from outside.
Why Choose Glitz Windows?
Experienced Window Installation Experts
25 years means difficult properties, unusual openings and every material combination you can think of. That experience means fewer problems and better results for you.
High-Quality Materials & Workmanship
We use materials we'd put in our own homes — not the cheapest option, the right one. We don't sign off a job until we're genuinely satisfied with how it looks and performs.
Energy Efficiency & Security Focused Solutions
Energy-rated frames and solid locking systems aren't add-ons. They're the baseline on every window we fit.
Trusted UK Window Installers
We're FENSA registered, independently checked against Building Regulations on every job. A lot of our work comes from recommendations — neighbours telling neighbours. That's the reputation we've spent 25 years building.
Frequently Asked Questions About Windows
What are the best windows for energy efficiency in the UK?
Currently, windows that are A+ rated with warm edge spacers, low emissivity glass and gas filled with argon are the best performing windows available commercially. Triple glazing performs the best, but in most cases, double glazing will provide you with the optimal combination of performance and cost.
How long does window installation take?
One window usually takes two to four hours. A full house of eight to twelve windows is typically a one to two day job. We’ll give you a clear timeframe when we visit.
Do I need planning permission for new windows?
Usually not — like-for-like replacements in standard residential properties fall under permitted development rights. Exceptions include listed buildings, conservation areas or significant changes to size or position. We’ll flag it if it applies to yours.
Are double glazed windows worth it?
Yes, for almost everyone. Lower energy bills, less noise, better security and a warmer home. Most people notice the difference within the first winter.
How often should windows be replaced?
uPVC and aluminium windows generally last 20 to 30 years with basic upkeep. If yours are over 15 years old and showing draughts, fogged-up units or stiff hardware — it’s worth having them looked at.
Ready to Upgrade Your Windows?
If your windows are letting the heat out and costing you money on your energy bills, then it’s definitely time to get them replaced. A simple survey could end up saving you hundreds.
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
Our Process
Four Steps to Order Window for Your Home
