Last Updated on 7 January 2025 by Josh Lucas
How Much Does Double Glazing Cost?
For UK homeowners, double glazing cost typically ranges from £300 for a single uPVC window to £6,000 or more for large sliding or bi-fold doors, depending on materials, design, and installation
Thinking about upgrading your home with double glazing? You’re in the right place!
Double glazing isn’t just about keeping the cold out; it’s an investment in comfort, style, and energy efficiency.
With its ability to lower energy bills, reduce outside noise, and boost your home’s value, double glazing has become an essential feature for modern homes.
But how much does it cost, and what factors should you consider before making your decision?
From understanding the differences between materials like uPVC and aluminium to exploring costs for windows, bi-fold doors, sliding doors, and French doors, this guide will give you a comprehensive breakdown.
What We’ll Cover
- The Basics of Double Glazing Cost
- Double Glazed Windows Cost: A Closer Look
- The Cost of Double Glazed Doors
- Installation Costs: What You Need to Know
- Value Beyond Price
- Frequently Asked Questions
The Basics of Double Glazing Cost
Double glazing costs can vary widely, depending on the material, design, and installation complexity. For an average UK homeowner, prices range as follows:
uPVC Windows
Cost-effective and thermally efficient, uPVC windows start at around £300 per unit. They’re an ideal choice for homeowners seeking affordability without compromising quality.
Aluminium Windows
Starting at £600 per unit, aluminium windows offer a sleek, contemporary style and unparalleled durability. They’re especially suited to modern homes.
French Doors
These doors typically range from £1,000 to £2,000. Known for their energy efficiency and aesthetic appeal, they’re a great investment for both security and style.
Sliding/Bi-Fold Doors
Expect costs between £2,500 and £6,000 for sliding or bi-fold doors. The price depends on the size, material, and additional features like integrated blinds.
Double Glazed Windows Cost
uPVC vs Aluminium
- uPVC Windows: These windows are a popular choice due to their affordability, starting at around £300 per unit.
They provide excellent insulation, reducing heat loss and helping to lower energy bills.
They’re also low-maintenance and resistant to rot and rust, making them ideal for the unpredictable UK weather.
- Aluminium Windows: Although pricier, aluminium windows start at £600 per unit and are favoured for their modern aesthetic and durability.
They’re slim-framed yet strong, allowing larger panes of glass for maximum natural light.
Additionally, many homeowners appreciate their recyclable nature, adding an eco-friendly aspect to their appeal.
Customization Options
Homeowners can further tailor their windows with features like:
- Triple Glazing: Offers enhanced insulation and noise reduction, typically adding £200–£400 per unit.
- Decorative Finishes: Georgian bars or custom woodgrain finishes can elevate the appearance, costing an extra £50–£150 per window.
- Integrated Blinds: Ideal for maintaining privacy while preserving a sleek look, these can add £200–£500 per unit.
Regional Price Variations
It’s worth noting that installation costs can differ across the UK. In London and other urban areas, higher labour costs may add to your overall budget, while rural locations may see slightly lower fees.
Window Types and Their Costs
- Casement Windows: The most common type, ranging from £300 to £600 depending on size and material.
- Bay Windows: Cost between £1,000 and £1,500 due to their larger size and additional installation requirements.
- Tilt-and-Turn Windows: Ideal for easy cleaning and ventilation, costing between £400 and £800 per unit.
Double Glazed Doors Cost
Bi-Fold Doors
Bi-fold doors are perfect for creating a seamless connection between your indoor and outdoor spaces.
Their cost typically ranges between £1,500 and £5,000, depending on the size and material.
High-end options like Korniche bi-fold doors are especially popular for their ultra-slim frames and energy-efficient glazing.
Larger installations with integrated blinds or triple glazing can cost upwards of £6,000.
Sliding Doors
Sliding doors are an excellent choice for panoramic views and modern aesthetics.
Starting at £2,500, these doors can go up to £6,000 for larger or more advanced designs like Cortizo Cor Vision Aluminium Sliding Doors.
Sliding doors are particularly effective for maximizing light while maintaining security and insulation.
Additional features like laminated glass or integrated handles may increase costs further.
French Doors
French doors bring classic charm to patios and conservatories. Prices can range between £1,500 and £2,500.
uPVC French doors are the most budget-friendly, while aluminium options sit on the higher end.
Homeowners often customize these doors with features like decorative glass or advanced locking systems, which can add £50–£200 to the final price.
Patio Door Considerations
When selecting doors, consider factors such as frame material, glazing type, and opening mechanisms. For example:
- Double vs Triple Glazing: While double glazing is standard, triple glazing offers superior insulation, albeit at a higher cost.
- Security Features: Multi-point locking systems or laminated glass can add peace of mind for an additional £100–£300 per door.
- Accessibility: Low-threshold designs are ideal for improving ease of access, particularly in homes with children or elderly residents.
Installation Costs: What You Need to Know
Professional fitting is crucial to ensure your double glazing performs as expected and maintains its performance throughout its lifespan.
An improper installation can lead to heat loss, condensation, and voided warranties.
Typical Installation Costs
Windows can typically range from £100 to £200 per unit for installation, while doors can cost between £500 and £1,500, depending on their size and complexity.
Choosing the Right Installer
Look for certifications from Assure Certification or FENSA, both of which ensure compliance with building regulations and industry standards.
These certifications provide peace of mind that your installer is qualified and your installation meets all necessary requirements.
Key Tip: Always request a detailed quote that includes both product and installation costs to avoid surprises.
Why Double Glazing Is Worth It
Energy Savings
High-quality double glazing significantly enhances insulation, reducing heat loss and lowering your energy bills.
In fact, you can save up to a couple of hundred pounds per year on heating costs, making it a long-term investment that pays for itself over time.
Modern double glazing also keeps your home cooler in the summer, reducing the need for air conditioning and further cutting energy consumption.
Noise Reduction
Living near a busy road or in a bustling neighbourhood?
Double glazing can be highly effective at reducing external noise, creating a quieter and more peaceful home environment.
This benefit is particularly appealing to families and those working from home who value a serene atmosphere.
Enhanced Security
Double glazing incorporates toughened glass and robust locking mechanisms, making it potentially harder for intruders to break in.
Features like laminated or toughened glass further increase security, providing homeowners with invaluable peace of mind.
Increased Property Value
Homes equipped with double glazing can be more attractive to buyers.
Not only can it enhance the aesthetic appeal of your property, but it can also reassure potential buyers of lower energy costs and better security.
This feature can boost your property’s market value, making it an excellent selling point if you decide to move.
Sustainability
Many double-glazed products are now made from recyclable materials, making them an eco-friendly choice for homeowners.
By reducing your home’s energy consumption, double glazing also helps to lower your carbon footprint. Over time, this small change can contribute to larger environmental benefits.
Ready to Invest in Double Glazing? Here’s Your Next Step
Double glazing is a smart investment that enhances your home’s comfort, energy efficiency, and overall value.
Whether you’re considering uPVC windows, sleek aluminium designs, or beautiful bi-fold and sliding doors, the options are vast and versatile.
By understanding the costs, customizations, and installation process, you’re well-equipped to make the best choice for your home.
If you’re ready to take the next step, your dream home is just a decision away! Start your journey today and reach out to our expert team on 01642 309 576 or get an instant quote online.
FAQs about Double Glazing Cost
Cost to replace double glazed window?
Replacing a single window can cost between £300 and £1,000, depending on material and size. For example, a small uPVC casement window may cost less than a large bay window.
What is the average cost of fitting double glazing?
Expect to pay £100–£200 per window for fitting and £500–£1,500 for doors. Ensure your installer provides a clear breakdown of labour costs.
Do you need planning permission for double glazing?
In most cases, no. However, planning permission may be required for listed buildings or properties in conservation areas. Check with your local council to be sure.
Can I fit double glazing myself?
While it’s possible to fit double glazing yourself, it’s not recommended. DIY installation can lead to poor sealing, condensation issues, and invalid warranties.
What is the lifespan of double glazing?
Double glazing can last between 20–30 years, depending on the quality of materials, the standard of installation and how well you maintain your double glazing.
Did you find this article helpful? These may also wet your whistle…
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- How to Find Cheap Aluminium Sliding Patio Doors
E&OE, Price estimations correct as of January 6th 2025
