Double Glazing

A white uPVC double-glazed casement window typically costs £500–£1,800 fitted in 2026; glazing a whole three-bed house runs about £4,100–£15,000.

By Ollie Smith Prices checked September 2026 Page updated January 24th, 2024

Start with the cost

Guide	Typical price
uPVC Sash Windows: Types, Cost, Pros and Cons	£520–£2,000 per window
Timber Casement Windows: Cost, Pros and Cons, Maintenance	£850–£1,975 per window
How Much Do Wooden Sash Windows Cost in 2026?	£1,000–£3,000 per window
How Much Does Triple Glazing Cost in 2026?	£600–£1,980 per window
Georgian Windows: A Timeless Touch to UK Homes	£650–£3,000 per window
Aluminium Casement Windows: Designs, Cost, Pros and Cons	£700–£4,500 per window
Flush Casement Windows 2026 Costs & Guide	£300–£900 per window

Choose a brand or company

Guide
Best 9 Window Colours and Trends in 2026
What Is the Best Type of Double Glazing?
Top 10 Benefits of Double Glazing for UK Homes

Learn the options

Guide	Typical price
How to Retrofit Double Glazing in Older Homes	—
How Double Glazing Affects Room Acoustics	—
Energy Performance Certificates (EPC) and Double Glazing	—
Retrofitting Double Glazing on Heritage Buildings	—
Double Glazing Standards for New Build Homes \| 2026 Guide	—
Double Glazing for Skylights: Considerations and Benefits	—
How To Fix Double Glazing Leaks and Draughts	—
Double Glazing in Listed Buildings: Grade I and II Rules	—
Lifespan of Double Glazed Windows in the UK	—
The Benefits of Low-Emissivity (Low-E) Glass in Double Glazing	—
The Impact of Double Glazing on Home Valuations in the UK	—
Smart Windows: Innovations in Double Glazing	—
The Role of Double Glazing in UK Building Regulations	—
How Double Glazing Can Reduce Your Energy Bills in the UK	—
The History of Double Glazing in the UK	—
How to Care for Wooden Windows	—
How to Clean Windows in 7 Simple Steps	—
How To Clean Sash Windows in 8 Simple Steps	—
What Makes uPVC Windows Secure?	—
Victorian Windows: Sophistication in Every Pane	—
Cottage Windows: Achieving a Country-style Charm	—
How to Fix a Loose uPVC Window Handle in 3 Easy Steps (with Pictures)	—
White uPVC Window Styles	—
Secondary Glazing: The Affordable Choice vs Double Glazing	£300–£500 per window
Standard UK Window Sizes for Casement, Sash, Tilt and Turn, Bay, and Bow.	—
How to Care for Your Windows: Top Maintenance Tips	—
Dealing With Condensation Issues in Double Glazing	—
Eco-Friendly Trends in Double Glazing for UK Homes	—
Fix a Tilt and Turn Window Stuck In Open Position	—
Window Furniture: All You Need To Know in 2026	—
How to Adjust a Top Hung uPVC Window (with Pictures)	—
The Advantages and Disadvantages of Triple Glazed Windows	—
Can You Get a Suntan Through a Window?	—
How To Replace Broken uPVC Window Handles	—
What are Casement Windows? All You Need to Know	—
Popular Types of Glass Used in Double Glazed Windows	—
What Are U-values for Double Glazed Windows?	—
How to Quickly Measure a Window for Replacement	—
What Are Trickle Vents and How Do They Work?	—
Is Triple Glazing Worth It? Through the Looking Glass	—

Written By

Ollie Smith

Ollie writes for Ecopreneurist, with a string of successful publishing brands under his belt, he aims to make the world a better place by showcasing only the best, unbiased and reliable content on the web!