Triple glazed windows and doors

Triple glazed windows and doors simply use three panes of glass within a sealed frame, instead of two. So, although glass conducts heat fairly well, triple glazing reduces this heat loss using the layers of air/gas in between the panes making it a lot harder for the heat to escape.

See technical information on triple glazed windows and patio doors

Glazing’s energy efficiency can also be improved by opting for low emissivity glass (aka Low-E glass). Low-E glass has an invisible coating that dramatically reduces heat transfer and reflects interior heat into the room. Low-E glass can make a big difference to a window’s thermal performance, whether it’s double or triple glazed.

Read more about triple glazing in our blog

In 2025, the UK government will introduce a Future Homes Standard for new build homes to be future-proofed with low carbon heating and world leading levels of energy efficiency. When the new standard will come into force, the current maximum U-value for a window will drop to 0.8W/m2K.

This lower U-value target is easily met by triple glazing but not by double glazing. As a result, homeowners are already starting to choose triple glazing for their homes, a trend which will accelerate as we get closer to the 2025 deadline.

Yes – a triple glazed window is better than a double glazed window in almost every way. While both use panes of glass with argon gas between them for insulation, triple glazing adds an extra pane and cavity, delivering higher performance across comfort, efficiency, and sustainability.

With VELFAC triple glazing, you benefit from:

• Superior energy efficiency – Lower U-values and reduced heat loss mean warmer homes and lower bills.

• Better sound reduction – Three panes block out more external noise for quieter living.

• Increased comfort – Fewer draughts, less condensation, and more stable indoor temperatures.

• Future-proof design – Meeting and exceeding today’s energy and environmental standards.

That’s why VELFAC has moved beyond double glazing and supplies only triple-glazed windows and doors, giving you long-lasting value without compromise.

If you are considering installing triple glazing windows in your home, we strongly suggest to ask a professional to do it for you. Installing triple glazing windows can help you reducing your energy bills , and improve your house indoor climate, but a poor installation can affect their efficiency and cause problems with the windows themselves. However, if you feel comfortable enough to install the windows yourself, we provide videos to guide you step by step. Learn more

Triple glazing can help to combat the heat loss during the cold winter months, it does the same job as double glazing, but better!

A triple glazed window is, however, more expensive than double glazing, costing roughly 10-20% more . To receive some advice and a no obligation quote for your project, please tell us about your project and get in touch with one of our distributors.

When comparing double glazing to triple glazing, the difference comes down to performance. Both use panes of glass separated by an insulated cavity filled with argon gas, but triple glazing adds an extra pane and cavity – delivering superior insulation, comfort, and sustainability.

Why triple glazing makes sense today

• Better insulation – Triple glazing significantly reduces heat loss compared to double glazing, keeping indoor temperatures more stable and energy bills lower.

• Improved acoustic performance – With three panes, noise reduction is far more effective, creating quieter living spaces.

• Enhanced comfort – Fewer cold spots and less condensation for a healthier home environment.

• Sustainability advantage – Triple glazing supports modern energy-efficiency standards and reduces a building’s carbon footprint.
  
  

Glass and gas keep you warm

Like double glazing, triple glazing uses argon gas between the panes. Argon is clear, non-toxic, and highly effective at blocking heat transfer. At VELFAC, every triple-glazed unit is also fitted with energy-efficient coatings that maximise natural light while reducing energy loss.

At VELFAC, we supply triple glazing because it delivers the highest levels of insulation, comfort, and energy efficiency. In colder or windier areas, triple glazing ensures indoor spaces stay warmer and more stable in temperature, allowing you to enjoy year-round comfort right by the window.

Why triple glazing outperforms alternatives

• Superior insulation – Retains more indoor heat and reduces cold spots.

• Greater comfort – Eliminates draughts and minimises condensation.

• Energy savings – Lower U-values help cut heating costs.

• Noise reduction – Three panes provide stronger acoustic performance than older glazing types.
  
  

Energy performance made simple

Your choice of glazing directly impacts window energy performance. With triple glazing from VELFAC, you don’t have to compromise – every unit combines slim design with outstanding thermal efficiency and sustainability, making it the smarter, future-proof choice for any project.

Discover more about our glass and accessories here.

VELFAC windows and doors are made to order, allowing you to tailor your glazing to your home’s specific needs. With a wide variety of shapes, sizes, frame colours, and opening functions, VELFAC gives you the freedom to create unique architectural statements and customise your windows to match your style.

See the key features of our windows and doors here.

VELFAC offers a minimum 10-year warranty on windows and a 5-year warranty on casement, sliding, and external doors. Our expert team is here to help you select the perfect windows for your needs. Visit our showroom to experience the quality of VELFAC products, or reach out to a VELFAC distributor for guidance.

Contact a VELFAC distributor here.