If you’re seeing issues with your windows or haven’t had an upgrade in a long time, then replacing old double glazing is definitely worth it. Modern double glazing has improved significantly in quality, energy efficiency, and security compared to past units.
If your windows show signs of wear or fail to keep your home warm, replacing them can lower your heating bills while creating a more pleasant living environment.
Why Consider Replacing Your Old Double Glazing?
Double glazing doesn’t last forever. Most windows have a lifespan of around 20-25 years, which depends on quality, installation, and weather conditions. Over time, seals break down, frames deteriorate, and the technology becomes outdated compared to newer options.
Here are some common issues that suggest your double glazing might need replacing.
Condensation Between Panes
While some condensation is normal, if you’ve noticed foggy patches or water droplets between the panes of glass in your double glazing, this is a clear sign that the seal has failed. This happens when the airtight seal around the edge of the glass unit breaks down, allowing moisture to enter the space between the panes.
This isn’t just an appearance issue. Once the seal fails, the insulating gas that fills the gap between panes escapes, dramatically reducing the window’s thermal performance. The window becomes much less efficient at keeping heat in your home.
Unfortunately, condensation between panes can’t be fixed, and the sealed glass unit needs replacing. While it’s sometimes possible to replace the glass unit and keep the frames, complete replacement is often the better solution if multiple windows are affected, or the frames also show signs of age.
Draughts and Cold Spots
Older double glazing often develops draughts as seals perish and frames warp or shrink over time. You might notice cold air coming in around the edges of the window, or cold spots on interior walls near windows.
A common test for draughts involves using a lit candle. If you run the flame across the window frame on a windy day, you can see exactly if and where there is a draught.
Draughts make your home uncomfortable, significantly increase heat loss, and strain your central heating system. In the long run, the energy wasted through inefficient old windows can cost much more than replacing them.
Difficulty Opening, Closing, or Locking
Windows that stick, jam, or are hard to close properly are more than just an annoyance; they’re a potential security risk and can allow water ingress.
These problems typically happen when:
- Frames have warped due to temperature changes and weathering
- Hinges and mechanisms have worn out or corroded
- The window was poorly installed
- The building has settled, putting pressure on the frames
While some repair work might help temporarily, these issues tend to get worse over time until the window is fully replaced.
Increased Energy Bills
If your heating bills have steadily risen (beyond regular price increases), your old double glazing might be to blame. Around 20% of a home’s heat can escape through windows.
The energy efficiency of double glazing has improved dramatically in recent years. The British Fenestration Rating Council (BFRC) rates windows from A++ (most efficient) to E, with modern windows typically achieving A ratings. Windows installed 15+ years ago would struggle to meet today’s C rating.
Upgrading to modern double or triple glazing can significantly reduce your heating costs. Many homeowners find that new windows eventually pay for themselves through energy savings, especially with today’s high prices.
Our Double and Triple Glazing Options
At BSF Windows, we offer both double and triple glazing options to suit different needs and budgets.
Double Glazing
Our double glazing uses two panes of glass with an insulating space between them. This significantly reduces heat transfer compared to single glazing and helps keep your home warmer in winter and cooler in summer.
All our double glazed windows are designed to provide excellent thermal insulation while offering added security for your home.
Triple Glazing
For maximum thermal performance, we also offer triple glazing. This uses three panes of glass with two insulating spaces, providing even better insulation than standard double glazing.
The benefits of triple glazing include better heat retention and improved sound insulation, which are helpful if you live near a busy road, in a city, or on a flight path.
Our Window Styles
We offer various window styles to suit different property types and personal preferences:
- Bay and Bow Windows: These windows extend outward from your walls, bringing in more natural light while adding extra space within the room.
- Sliding Sash Windows: Perfect for older properties, these windows slide up and down rather than swinging out. Our modern sash windows keep the traditional look while adding modern performance.
- Residence Collection: These windows look just like timber but have the benefits of modern materials. They’re designed with period properties in mind and often work well in conservation areas.
- Tilt and Turn Windows: These clever windows can either tilt inward at the top for secure ventilation or open entirely for full ventilation. They’re particularly useful high up, allowing cleaning from inside the home.
- Flush Sash Windows: Windows where the opening part sits flush with the frame, creating a neat, tidy look. They’re especially popular for updating period properties.
- Casement Windows: These windows are hinged at the side and open outwards. They’re straightforward, reliable, and suit almost any type of home, which is why they’re still the UK’s most common window type.
All our window styles can be made with either uPVC or aluminium frames, and come in a range of colours. We also offer bespoke timber windows.
Need Help with Your Windows?
Replacing old double glazing is worth the investment, particularly if your windows are over 15-20 years old or suffer from issues. Modern windows significantly improve energy efficiency, security, comfort, and appearance. The long-term benefits in energy savings, reduced maintenance, property value, and improved home comfort make it a worthwhile investment for most homeowners.
All our installations are carried out by our team of experienced installers, and we’re FENSA registered, which means our work complies with building regulations and comes with proper certification.
Get in Touch
If you’re considering replacing your old double glazing, we’d be happy to provide advice and a no-obligation quote. Our team can talk you through the options and help you make the right choice for your home.
We’d love to invite you to our showroom. Here, you can view and use our products and talk to our friendly team in person. You can find this at 31-33 Station Road, Horley, Surrey, RH6 9HW.
For more information, call us on 01293 408 713, email us at bsfwindows@gmail.com or use our online contact form.
Frequently Asked Questions
How long do double glazed windows typically last?
Most good quality double glazed windows have a lifespan of 20-25 years. However, this depends on factors like the quality of the original installation, the materials used, and local weather conditions.
Can I just replace the glass in my old windows?
Sometimes yes, particularly if the frames are still in good condition. However, if your windows are very old, replacing just the glass may not be cost-effective in the long run.
What is the difference between double and triple glazing?
Double glazing has two panes of glass with a gap between them, while triple glazing has three panes with two gaps. The main differences are in performance. Triple glazing provides better insulation, keeping more heat in during winter and out during summer. It also offers improved sound insulation.