What are the most energy efficient roof windows?

So, what are the most energy efficient windows? Most modern roof windows will offer energy-savings and boost energy efficiency. The higher the glazing properties, the better the sound and energy-savings.

It may come as little surprise that triple glazed windows are one of the most energy efficient roof windows. They offer superior thermal insulation properties compared to their double glazed counterparts. They also help to reduce heat loss.

Installing energy efficient roof windows can help:

• Boost energy-savings:

Energy efficient roof windows reduce the need for heating and cooling, which is not only better for your energy bills but is also good for the environment.

• Better home comfort:

Heat rises, so lofts can get hot. But with the right energy efficient roof windows, you can better manage the indoor temperature to keep it consistent.

• Good for the environment:

Installing insulated roof windows that are energy efficient can help reduce your carbon footprint as you will use less energy to heat and cool the space.

• Adds value to your property:

Homes with energy efficient features, such as high-performing roof windows, often have a higher resale value.

Some of the key features of energy efficient roof windows include:

• Triple glazing
• Low-E coating
• Argon gas filled
• Thermally broken frames
• Solar control

Here are some of the most popular glazing options for energy efficient roof windows:

• P2 anti-burglary

P2 is our most popular glazing option as it offers good thermal insulation for habitable rooms whilst also having an anti-burglary class of laminate and a U-value of 1.3W/m²K.

• P5 triple glazed anti-burglary

P5 is also a very popular insulated roof window choice for those who prefer a more insulated option with its triple glazing offering a U-value of 1.01 W/m²K.

• U3 double glazed energy saving

With a thicker warm spacer, the U3 glazing keeps the room warmer than other glazing options saving energy and money on utility bills. It has a U-value of 1.3W/m2K.

• U6 triple glazed highly energy-saving

A step up from the U3 glazing, U6 offers three panes to keep the warm in and the cold out to help save money on utility bills. U6 provides a U-value of 0.8 W/m²K.

• U8 quadruple glazed Passivhaus

As the most energy efficient roof window, Passivhaus-certified U8 glazing offers one of the lowest U-values on the market at 0.58 W/m²K. This means that heat transmission is extremely low to help keep your spaces warm while saving you money and considering our carbon footprint.

There are several energy efficient windows grants and financial incentives that may be available to you. These include:

• Energy Company Obligation Scheme (ECO4):

This provides funding for energy efficient home improvements, including energy efficient roof windows. This grant is only available to low-income households, and you can apply through your energy supplier.

• Home Upgrade Scheme (HUG2):

The HUG2 grant offers between £3,000 and £24,000 for energy efficiency upgrades and includes high-performance roof windows. It’s aimed at low-income households that are not on the gas grid and have an energy efficiency rating of EPC D-G. It’s available through selected local authorities in England until March 2025.

• Local Authority Grants:

Some local authorities offer grants for energy efficient windows; please check with your local council office.

Here’s a checklist of things to consider when choosing your energy efficient roof windows:

• Aim for low U-values as they indicate better insulation.
• If installing roof windows for the first time, consider the placement of your windows to ensure you get the most natural light. This helps reduce heating and lighting costs.
• Choose materials that have good thermal properties.
• Look for additional energy-saving features such as solar control or Passivhaus-certified U8 glazing.

FAKRO windows boast thermal insulation for high-performance roof windows, to prevent heat loss in winter and avoid excessive heat penetration in warmer temperatures. We offer energy efficient roof windows with a single, double or triple chamber glazing unit, while their PVC profiles are filled with insulating material, making them a great addition to an energy efficient home.

If you have any questions or would like to learn more about our Fakro roof windows, please get in touch with us. A friendly member of our team will be happy to help.