Sliding Sash Windows South London & Surrey
If you’re searching for sliding sash windows that combine period elegance with modern performance, Glitz Windows installs bespoke, double glazed sash windows across South London and Surrey — built to fit period properties, conservation areas, and modern homes alike. Whether you’re restoring the character of a Victorian terrace or upgrading tired timber frames that let in draughts, our made-to-measure sash windows are designed, manufactured, and fitted by a local team you can actually reach on the phone.
Search “sash window installers near me” and you’ll find plenty of options — what sets Glitz Windows apart is a straightforward process: a free home survey, transparent pricing with no hidden extras, and an installation team that treats your home like their own.
What Are Sliding Sash Windows?
A sliding sash window is a classic window style made up of one or more movable panels — known as sashes — that slide vertically past each other within the frame, rather than opening outward like a casement window. Traditionally built from timber and balanced using a system of cords, pulleys, and weights, sash windows have been a defining feature of Georgian, Victorian, and Edwardian homes across the UK since the 17th century.
Today’s sash windows keep that timeless look but swap the fragile single-pane glass and draughty timber boxes for modern uPVC or aluminium profiles, spiral balances, and double glazed units — giving you the same vertical sliding sash design with far better thermal efficiency, security, and low maintenance. It’s why so many homeowners in conservation areas and listed buildings choose them: they preserve a property’s original character while meeting today’s building performance standards.
Benefits of Sliding Sash Windows
Traditional Character, Modern Performance
Sash windows keep the proportions, sightlines, and detailing — including authentic sash horns and Georgian bar options — that period properties were built around, while modern manufacturing means they operate far more smoothly than the original timber-and-cord systems ever did.
Improved Energy Efficiency
Double glazed sash windows dramatically cut heat loss compared to single-glazed originals. With low U-values and effective draught-proofing, they help keep rooms warmer in winter, cooler in summer, and can meaningfully reduce your heating bills over time.
Enhanced Security
Multi-point locking systems, reinforced frames, and toughened glass mean modern sash windows offer a level of security that original Georgian and Victorian sashes simply couldn’t. Many ranges also meet current British Standard security requirements.
Increased Property Value
Well-fitted sash windows are one of the few upgrades that improve both a property’s efficiency and its kerb appeal — a detail buyers and valuers alike tend to notice, particularly on period homes where original-style windows are expected.
Sliding Sash Window Materials
Choosing the right material comes down to budget, maintenance preference, and how closely you need to match an existing property style — particularly if you’re in a conservation area.
uPVC Sliding Sash Windows
uPVC is the most popular choice for good reason. It insulates well, costs less than aluminium and asks very little of you: a wipe with warm soapy water now and then is usually enough. Frames come in classic white and woodgrain finishes, so they suit everything from 1930s semis to new builds. A quick tip: put a drop of light machine oil on the hinges and locking points once a year and the window will glide like new.
Aluminium Sliding Sash Windows
Aluminium sash windows suit homeowners who want slimmer sightlines, a contemporary edge, or windows for larger openings where strength matters. Aluminium frames are naturally durable, resistant to warping, and available in a wide range of powder-coated finishes — a strong option for period-inspired new builds or renovated properties where a crisper finish is preferred over a traditional woodgrain look.
Why Choose Glitz Windows?
Local Expertise & Experience
We've been installing windows across South London and Surrey long enough to know exactly what period properties in this region need — from matching original sightlines to navigating local conservation area rules.
Quality Materials & Guarantees
Every sash window we install is backed by manufacturer guarantees on both the profile and the double glazed units, so you're covered long after installation day.
FENSA & Industry-Accredited Installers
Our installations are carried out to recognised industry standards, giving you the paperwork and building regulations compliance you need — particularly important if you ever come to sell the property.
Free Surveys & Quotes
Every project starts with a free, no-obligation home survey and a clear, itemised quote — no pressure sales tactics, no hidden costs added later.
What Our Customers Says About Us
Sliding Sash Windows – FAQs
How much do sliding sash windows cost?
Sash window prices vary depending on size, material, and glazing specification. As a general guide, uPVC double glazed sash windows typically range from around £800 to £1,500 per window, while aluminium and timber options sit higher due to material and manufacturing costs. The best way to get an accurate figure for your property is a free, no-obligation survey — get in touch and we’ll provide a clear, itemised quote based on your exact windows.
Can sliding sash windows be double glazed?
Yes. Modern sliding sash windows are almost always specified with double glazing as standard, and triple glazing is available for even higher thermal performance. Double glazed sash windows retain the slim sightlines and traditional proportions of the original design while significantly reducing heat loss, noise transfer, and condensation compared to single-glazed timber originals.
How do sash windows improve energy efficiency?
Older timber sash windows are notorious for draughts, gaps around the sash box, and single-pane glazing that loses heat quickly. Modern sash windows address this with double glazed units, low U-value glass, integrated draught seals, and precision-engineered frames — meaning far less heat escapes through the window and less cold air gets in, which can noticeably lower your heating costs.
Are sliding sash windows suitable for conservation areas or listed buildings?
In many cases, yes — sliding sash windows are often the preferred or required style for conservation areas and listed buildings, since they preserve the original character of period properties. However, planning requirements can vary by local authority and by the specific listing, so it’s worth checking with your local planning department or asking us to advise based on similar projects we’ve completed nearby.
How long does installation take?
Most domestic sash window installations are completed within one to three days, depending on the number of windows and any additional work required, such as repairing surrounding brickwork or plasterwork. We’ll confirm an accurate timeframe for your project during your free survey.
What Do We Offer
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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
