Discover high-quality uPVC windows for superior energy efficiency

A warm, comfortable home starts with the windows that hold the heat in. An ageing frame, or a timber window that has swollen out of shape, can let that warmth escape all year round. The result is higher energy bills and rooms that feel cold and draughty. At Sherborne Windows, we design, supply and install uPVC windows built to reduce that heat loss and keep your home warmer for less.

Key takeaways

• Multi-chamber frames and quality seals cut heat loss, worth up to £85 a year on energy bills
• A wide range of styles and frame colours, from casement to sash and bay
• Built to last 20 to 35 years, backed by a 10-year guarantee, with minimal maintenance

How uPVC windows cut heat loss and lower energy bills

Government figures suggest that around 18% of the heat lost from a typical home escapes through the windows, making them one of the first places to look when tackling high energy bills. Every uPVC window we install is built around a multi-chamber profile. These internal chambers trap pockets of air within the frame, slowing the transfer of heat between a home and the outside world. Paired with quality seals around each pane of glass, this stops the draughts that creep in through gaps in older frames.

Double glazing adds a further layer of insulation. Two panes of glass with a sealed gap between them keep warmth inside the house far better than a single pane.

The Energy Saving Trust estimates that upgrading single glazed windows to A-rated double glazing can save your home on average £85 a year on energy bills. If you are weighing up the cost of new windows against years of lower bills, figures like these demonstrate why uPVC windows are worth the long-term investment.

What makes uPVC windows more energy efficient than timber windows?

uPVC frames contain multiple internal chambers that trap air and slow heat transfer, and quality seals stop draughts at every joint. Timber windows can warp, swell or rot with age, loosening their structure and energy efficiency. uPVC windows keep their shape and seal for decades, holding onto their thermal performance.

Choose from a wide range of styles and frame colours

Our customers own a wide range of property types, from period cottages to modern new builds, so we stock uPVC windows in a range of styles to suit each property’s unique character:

• Casement windows remain the most popular choice among UK homeowners, available as traditional or flush casement windows for a slim modern profile
• Sash windows in uPVC recreate the classic proportions of a period home without the upkeep timber demands
• Bay windows add extra light and space, framing wider views of a garden or street
• Tilt and turn windows use a dual-action handle to tilt inwards for ventilation, or turn to swing inwards for cleaning, unlike standard windows, which open outward

We supply a wide range of colours, from classic White and Cream to Anthracite Grey, Black, Golden Oak, Rosewood, Irish Oak and Chartwell Green, plus custom RAL shades and dual-colour finishes. Our team can advise on which style and colour will best complete your home or visit one of our showrooms to see the range in person.

Low maintenance windows built to last

New uPVC windows typically last 20 to 35 years, and every installation comes with our 10-year guarantee. Unlike timber, uPVC will not rot or blister, and there is no repainting to worry about, which makes it a genuinely cost-effective, long-lasting alternative.

Maintenance is straightforward:

• Wipe frames down with warm soapy water a few times a year
• Rinse and dry to keep the finish looking crisp
• No sanding, staining or repainting required

uPVC frames also resist fading from UV rays, so they keep their colour even through extreme weather. Multipoint locking and other security features come fitted as standard, giving homeowners complete control over entry and real peace of mind. Our full product care and maintenance guide has more tips on keeping every window looking its best.

Ready for new uPVC windows from Sherborne Windows?

We have supplied and installed uPVC windows across Hampshire, Surrey and Berkshire for over 30 years. If ageing frames are letting the heat out raising your energy bills, our expert team can advise on the best solution for your home. Simply request a free quote, give us a call on 01252 370917 or drop an email to enquiries@sherbornewindows.co.uk.