Created in partnership with Swan Windows
Double glazing remains one of the most impactful home upgrades you can make. Whether you’re upgrading your windows in Hertfordshire or elsewhere in the UK, Double Glazing Company installations offer a range of benefits. It keeps your home warmer, reduces energy bills, and blocks out noise, all while adding an extra layer of security. But how much should you expect to spend? If you’re planning to install double glazing, understanding the costs involved is key. This guide will take you through everything you need to know, including materials, installation costs, and tips to save money. By the end, you’ll feel confident about budgeting and choosing the best windows for your home.
Why double glazing is a smart investment
Double glazing has become a staple feature in modern homes, and it’s easy to see why. Here are some of its biggest benefits:
1. Lower energy bills
Windows are one of the main culprits for heat loss in a home, and single-glazed windows do a poor job of keeping warmth in. By switching to double glazing, you could save up to £145 a year on energy bills, depending on your property size and the number of windows replaced.
2. A quieter home
Whether it’s traffic noise, aeroplanes, or noisy neighbours, double glazing significantly reduces outside sound, creating a peaceful indoor environment.
3. Boosted property value
Energy efficiency and low maintenance are highly attractive to buyers. Having double glazing installed can make your home more appealing and increase its market value.
4. Better security
Double-glazed windows are much harder to break compared to single panes. Opting for toughened or laminated glass, paired with advanced locking mechanisms, further enhances your home’s security.
Factors that influence double glazing costs
The cost of double glazing can vary widely, depending on several key factors. Here’s what to consider:
1. Material types
- uPVC: The most affordable and popular choice. Prices range from £300 to £1,200 per window. It’s durable, low-maintenance, and available in various colours and finishes.
- Aluminium: A sleek, modern option costing £500 to £1,500 per window. Aluminium is long-lasting and requires minimal upkeep, though it comes at a higher price.
- Timber: Perfect for period properties, but expensive, with prices between £900 and £2,700 per window. Timber requires regular maintenance to prevent decay but adds timeless charm.
2. Window styles
Different designs come with different price tags:
- Casement windows: The most common and affordable style, costing £300–£800 per window.
- Sash windows: Ideal for traditional or older homes, with prices between £500 and £1,500 per window.
- Tilt-and-turn windows: Practical for ventilation and easy cleaning, priced around £400–£900 per window.
- Bay/bow windows: These larger, decorative windows start at £1,000 and can go up to £3,000 depending on size and complexity.
3. Glass types
- Standard glass: Usually included in basic quotes.
- Low-emissivity (Low-E) glass: Reflects heat back into your home, improving insulation. This upgrade costs an additional £20–£50 per window.
- Toughened or laminated glass: Adds extra durability and security, with an extra cost of around £100–£150 per window.
4. Installation complexity
Replacing an existing frame is usually cheaper than installing entirely new windows. Custom or irregularly shaped windows, however, require bespoke work and will cost more.
5. Location in the UK
Labour and material costs vary depending on where you live. Homeowners in London and the South East tend to pay more than those in other parts of the UK.
6. Additional features
Optional extras, such as decorative finishes, triple glazing, or advanced locking systems, can add anywhere from £50 to £500 per window.
Estimated double glazing costs for 2024
Here’s an overview of typical costs:
| Material/Style | Cost Per Window | Full House (8 Windows) | Full House (12 Windows) |
| uPVC Casement | £300–£800 | £2,400–£6,400 | £3,600–£9,600 |
| Aluminium | £500–£1,500 | £4,000–£12,000 | £6,000–£18,000 |
| Timber Sash | £900–£2,700 | £7,200–£21,600 | £10,800–£32,400 |
Tips to save money on double glazing
- Get multiple quotes
Always shop around. Request at least three quotes from reputable installers to compare prices and services. - Check for government grants
Schemes like ECO+ may provide funding for energy-efficient home improvements, including double glazing. - Stick to standard designs
Bespoke windows look great but come with a higher price tag. Opt for standard sizes and designs to save money. - Plan your timing
Some companies offer discounts during quieter periods, such as the winter months.
Maintenance and lifespan
- uPVC: Requires little upkeep—just an occasional wipe with soapy water.
- Aluminium: Needs occasional cleaning to maintain its finish.
- Timber: Demands more effort, including regular sanding, painting, or varnishing to prevent rot.
With proper care, double-glazed windows typically last 20–35 years. Aluminium frames often outlast uPVC, while timber durability depends on maintenance.
Environmental benefits
Double glazing isn’t just good for your bank balance—it’s also a win for the planet. By reducing heat loss, it helps lower your home’s carbon footprint. For eco-conscious homeowners, recycled aluminium or FSC-certified timber frames are excellent options.
Frequently asked questions
Is double glazing worth the cost?
Yes. While the upfront cost may seem high, the long-term savings on energy bills, increased comfort, and added property value make it a worthwhile investment.
Can I install double glazing myself?
It’s possible but not recommended unless you have experience. Poor installation can lead to drafts, reduced efficiency, and voided warranties.
Final thoughts
Double glazing is a worthwhile investment, offering lower energy bills, a quieter home, and improved security. Armed with a clear understanding of the costs and options, you’re well-equipped to make the right decision for your budget and needs.
Ready to upgrade your home? Get a personalised quote today and start enjoying the benefits of double glazing!
Featured image: Elena Photo, Canva
