Triple glazing provides homeowners a marked increase – 40-45% - in thermal performance from double-glazed alternatives, meaning greater comfort, lower heating bills, and an uplift in property value.

These windows and doors are durable, secure and aesthetically pleasing - and they're not just for Passive Houses, either. When choosing your windows and doors, though, you should take into account your whole-building thermal efficiency, budget, and noise concerns to make an informed decision. 

High performance double-glazing can provide a useful alternatives to those considering triple glazing who feel it doesn’t suit their project requirements. When you choose alu-clad timber triple-glazed windows and doors, you benefit from the charm and warmth of wood and the sleek, low maintenance needs of aluminium.

Norrsken double and triple-glazed windows are engineered for exceptional thermal performance, keeping your home comfortable and energy-efficient year-round.

When choosing your windows and doors, though, you should take into account your whole-building thermal efficiency, budget, and noise concerns to make an informed decision. 

The thermal performance of a triple-glazed window is typically 40-50% better than a double-glazed version – reducing carbon emissions and heating bills - but costs on average only 10-15% more.

The inside pane stays 2.5-3 degrees warmer over its whole surface than a double-glazed window, giving a much more comfortable feel inside the room.

Bespoke triple-glazed windows cost more than double-glazed or uPVC windows.

Prices depend on the model selected, size and shape, and requirements for additional services such as installation. But the uplift in cost from our double to triple-glazed range is about 10-15% which, given their 40-45% increase in thermal performance, we believe is worth the investment.

There is no set lifespan for triple-glazed windows. With good care, they can last from 20 to around 50 or more years – particularly if clad externally in aluminium.

The glass in a triple-glazed window may need to be replaced sooner as its gas filling can escape over time, compromising the thermal performance of the window.

The thermal performance of our triple-glazed windows is normally 40-50% better than double-glazed equivalents.

Using our windows can contribute to a significant reduction in your home's CO2 emissions and a reduction in your heating bills. We only use FSC and PEFC certified timber and work with partner manufacturers awarded ISO 14001 qualification.

Triple glazing reduces noise by physically blocking sounds. Most customers report noticeably quieter homes with triple glazing installed.

In our laminated glass units, a thin layer of polyvinyl butyral resin (PVB) bonds glass sheets together.

Originally used for safety and security, laminated glass also provides excellent acoustic performance by dampening sound waves.

Most of our triple glazed units have a U-value of less than 0.8 W/(m²K) – 50% better than the best double-glazed windows.

This means less heat loss overall from the windows; the inside glass pane will be comfortable to the touch and the rooms feel warmer, even when it is cold outside.

The thermal performance of a triple-glazed window is normally 40-50% better than a double-glazed version, but typically only 10-15% more expensive.

Noise reduction can also be better depending on the glass used. This improved thermal performance is delivered as a result of the extra insulation provided by the third pane of glass and the additional layer of argon gas.