Upgrading your home to double glazing is one of the most effective ways to boost energy efficiency, improve comfort, and enhance home security. However, when it comes to figuring out the cost, things can get a little overwhelming. With so many factors to consider, such as window styles, frame materials and installation requirements, prices can vary significantly.
To help make things simpler, we’ve broken down the average double glazing costs for 2025. From key price influencers to helpful insights, this guide is designed to help you make an informed decision for your home.
Average Costs by Frame Style
Before we dive into the numbers, it’s important to understand how different frame styles can impact the overall cost. Window types vary in materials, design complexity, and installation time, which can influence pricing.
Here’s a quick breakdown of the most popular window styles and their estimated costs:
Casement Windows
Casement windows are the most common style of window frame in the UK. Hinged at the side, they open outwards either singly or in pairs.
The average cost (for white uPVC) can cost from £600 to £2,000 per window.
Sash Windows
Sash windows are a classic choice, often selected for their timeless charm they bring to period properties. They feature two sliding panels that move vertically.
The average cost (for white uPVC) can cost from £1,000 to £2,500 per window.
Tilt & Turn Windows
Tilt and-turn windows are popular in modern homes for their versatility. They can tilt inwards for ventilation or fully swing open from the side, making them practical and easy to clean.
The average cost (for white uPVC) can cost from £750 to £1,800 per window.
Bay Windows
Bay windows are a beautiful feature that let in plenty of natural light and offer panoramic views. They’re made up of three or more individual windows set at angles.
The average cost (for white uPVC) can cost from £1,800 to £3,500+ per bay.
*Please note: The prices above are rough estimates. For an accurate, tailored quote, please get in touch with us.*
What Can Affect the Cost of Double Glazing?
Several factors can influence how much you’ll pay for double glazing. Some of these factors are:
- Number of Windows – The more windows you need, the higher the overall cost.
- Energy Efficiency Rating – Higher-rated glazing (such as A+ or triple glazing) is more expensive but does offer better long-term savings on energy bills.
- Window Style & Security Features – Different designs and locking mechanisms come at different price points.
- Custom Requirements – Bespoke colours, sizes, and finishes will increase the cost.
- Installation Complexity – Homes requiring structural adjustments, scaffolding or tricky access may incur additional charges.
- Property Location & Access – If access is limited or specialised equipment is needed, installation may be more costly.
When Should I Replace My Double Glazing?
Many homeowners tend to upgrade their windows for aesthetic or energy-saving reasons, but there are also clear signs that your current double glazing may need replacing:
- Condensation or misting between the panes.
- Draughts even when windows are closed.
- Stiff or faulty opening and closing mechanisms.
- Cracks, chips, or visible frame damage.
Replacing old or damaged windows can significantly improve insulation, comfort, and security.
Benefits of Double Glazed Windows
Double glazing remains one of the most popular home improvements in the UK, and for good reason. Here are some of the key benefits:
- Cost-Effective – Reduces energy bills over time through improved insulation.
- Energy Efficient – Keeps your home warm in winter and cool in summer.
- Long-Lasting – Modern double glazing can last over 20 years with minimal maintenance.
- Stylish Options – Available in a wide range of designs, finishes, and frame colours.
- Noise Reduction – Great for homes in busy or noisy areas.
- Low Maintenance – uPVC and other modern materials require little upkeep.
Final Thoughts
While the cost of double glazing in 2025 will depend on a range of factors, it continues to be one of the smartest investments for any homeowner. Whether you’re looking to cut energy bills, modernise your property, or simply enjoy a quieter and more comfortable space, upgrading your windows with Greenoak is a step in the right direction.
Interested in double glazing for your home? Get in touch with the team at Greenoak Concept & Design for advice and professional installation you can trust.
