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Contemporary uPVC Sash Windows

Our Contemporary uPVC sash windows deliver the elegant aesthetics of traditional timber with next-generation performance, affordability and low maintenance. Sculpted frames and sashes replicate heritage detailing like decorative horns and mechanical rail joints, allowing installation in period homes and modern spaces alike. The sliding sashes operate smoothly and independently with a concealed balance mechanism, tilting inwards to facilitate safe and easy cleaning. We ensure structure integrity in larger windows through steel-reinforced internal chambers, while advanced multi-chambered framing enhances thermal efficiency, weatherproofing and noise insulation.

Choose classic Georgian bars and hardware in a variety of finishes to complete the traditional look. Manufactured in durable, low-maintenance uPVC, our Contemporary sash windows offer beautiful Victorian-inspired looks with modern standards of energy efficiency, security, functionality and affordability. Tailored to your home, you’ll be able to keep your interiors comfortable and protected while presenting a classic façade.


Traditional Sliding uPVC Sash Window

Our Traditional uPVC sash windows are designed to deliver the natural aesthetic of timber with superior longevity and efficiency. Assembled with precise mechanical joints and decorative run-through horns, they authentically replicate the details of classic wooden windows. Choose from a range of authentic wood grain finishes to ensure the perfect match for your home’s style, whether it’s a Victorian townhouse or a contemporary build, with hardware options to match. The sashes conveniently tilt inward for easy cleaning while remaining firmly in place when shut.

This range offers a truly authentic look for your home at a more affordable price point. Balancing the beauty and elegance of traditional timber with incredible durability, our Traditional selection brings you authentic period charm alongside modern insulation, weatherproofing, easy operation, and affordable pricing. Give your home the stunning timber-style windows it deserves without ongoing maintenance.

Heritage uPVC Sliding Sash Windows

Our ultimate heritage range is designed to replicate the traditional timber box sash look, with all the benefits of modern windows. If you’re looking to replicate the look of a traditional timber sash window our heritage options are the closest uPVC match you’ll find, offering the ideal combination of modern performance and traditional composition making them the quintessential choice for those looking to uphold conservation in their properties.

Your heritage sash windows can be tailored with optional extras such as staff beads, matt chalk white foil replicating a spray finish, woodgrain effect and a choice of horn options. All windows feature mechanical joints and an ultra-slim 35mm midrail, alongside a deep bottom rail with simulated putty lines to closely replicate traditional joinery. We’ll create a truly authentic look for your home, with fantastic uPVC performance.


We believe in backing up our commitments to quality with a series of clear guarantees on all products and work.

  • 10-year warranty on uPVC parts
  • 10-year warranty on glazing
  • 10-year warranty on workmanship
  • 5-year warranty on window hardware

Benefits of uPVC windows

uPVC allows us to offer windows in a range of traditional and modern looks that offer fantastic performance and simple long-term use.

Why Choose Sash Windows London?

If you’re apprehensive about opting for uPVC windows for your property, our excellent products and service will provide you with everything you need.

A Reliably Smooth Experience

Through modern innovations and old-fashioned engineering rigour, we can ensure that our windows have smooth mechanisms for easy opening and closing long into the future. uPVC windows are designed around simple maintenance and excellent performance, with clear benefits for our customers.

A Natural Look

Our wood effect finishes are totally convincing, the perfect choice for a heritage building looking to maintain its exterior look while upgrading its insulation and security.

Charming Traditional Looks

Through a range of customisable designs we can replicate a huge selection of period looks for your home, helping you keep your pristine historical exterior while benefiting from modern performance.

Long-term Performance

uPVC offers brilliant performance over many years, backed up by a range of warranties. When you purchase windows through our team, you’re making an investment in your home.

Your uPVC Choices

Our uPVC windows can be customised with a range of glazing and finishes to suit your unique needs. Select from double or triple glazing, including 4mm and 14mm slimline options, or opt for acoustic glazing to limit external noise or obscure glass for privacy. In terms of looks, our smooth finishes come in an array of Farrow & ball heritage colour options, while our lifelike wood grain finishes come in a choice of 6 timber-inspired textures, each adding warmth to classic exteriors. Expertly mimicking the look of oak, cherry or mahogany, you can opt for a wood look on both faces or just the external ones.

Additional finishing details like Georgian bars, bevelled glass, or colour-matched handles complete your heritage aesthetic. With robust uPVC construction for unparalleled insulation, our windows combine customizable aesthetics, noise reduction, thermal performance, and security.