What is insulation glass, and why is it important for your home?

What is insulation glass?

Insulation glass consists of two or more panes of glass separated by an insulating layer of air or gas. This layer helps reduce heat loss in winter and prevents heat from entering your home during warmer months. HR++ and triple glazing are typically filled with an insulating gas such as argon, and often feature a special low-emissivity coating that reflects heat back into your home while allowing natural light to pass through.

Why is it important for your home?

Windows often account for a large proportion of your home’s exterior. High-quality insulation glass helps keep your home warm in winter and cooler in summer. The result is a more comfortable living environment and lower energy bills.

Lower energy consumption

Insulation glass significantly reduces heat loss, helping to lower your heating costs during the colder months. Replacing single glazing or older double glazing can make a noticeable difference. HR++ and triple glazing offer the highest levels of energy efficiency.

Want to learn more about the potential savings? Read our blog: “How much can you save with insulation glass? A practical example”

Improved living comfort

No more cold window surfaces or uncomfortable draughts. Well-insulated glazing makes your home feel warmer and more pleasant, especially near windows. You can finally relax on the sofa without feeling a cold draught.

Increased property value

Homes with modern insulation features are generally more attractive to buyers. Energy efficiency and comfort are becoming increasingly important when purchasing a property, so installing insulation glass can also help increase your home’s value.

Reduced outside noise

Insulation glass doesn’t just improve thermal performance—it also helps reduce external noise. If you live on a busy road or experience noise from your surroundings, specialist acoustic insulation glass can create a quieter home.

A better energy label

Installing high-performance insulation glass can improve your home’s energy label. This can be beneficial if you plan to sell or rent your property, and you may also qualify for government grants.

Is it worth replacing double glazing with HR++ glass?

Yes, especially if your double glazing was installed before 2000. Older double glazing provides significantly less insulation than modern HR++ glass. In many cases, the investment pays for itself through lower energy bills. Combining new glazing with additional insulation measures, such as cavity wall insulation or floor insulation, can increase your savings even further.

What are the four types of insulation glass?

1. Double glazing: Two panes of glass with an air-filled cavity. Better than single glazing, but less efficient than modern HR++ glass.
2. HR+ glass: Features a low-emissivity coating and is usually filled with argon gas. It provides noticeably better insulation than standard double glazing.
3. HR++ glass: High-performance glazing that has become the standard choice for modern homes. An excellent option for renovation projects.
4. Triple glazing (HR+++): Three panes of glass with two insulating cavities. It offers the highest level of insulation, but is thicker and heavier, making it unsuitable for some existing window frames.

Which type of insulation glass should you choose?

The right choice depends on your property, your budget and your renovation plans. For most existing window frames, HR++ glass is the best option. If you’re building a new home or replacing your window frames, triple glazing is often the logical choice. It’s also worth checking whether you’re eligible for government grants, as this can make your investment even more attractive. Contact us for a free consultation if you’d like expert advice. We’ll be happy to help you find the best solution for your home.