We often receive enquiries from people looking for triple glazed sash windows. Naturally, people are looking for the beauty of a sliding sash window combined with optimum insulation value from modern glazing. Although anything is possible from a bespoke joinery workshop, there are two main reasons why they are not commonly used.
Firstly, recent improvements in the u-values and performance of double glazed units have made them almost as efficient as triple glazed units. This has been made possible with the introduction of ‘Low-E’ glass and gas filled cavities. By filling the glazing unit with gases such as ‘Argon’ and ‘Krypton’, the thermal efficiency of a window is greatly improved.
This is one reason why Kingsbridge’s sliding sash window can achieve an overall U-Value of 1.5. (more on Low U Value Windows)
Secondly, sliding sash windows are normally chosen for aesthetic reasons. Placing a triple glazed unit into a sash window can take from its slender appearance and make the window look bulky and commercial like.
As I said anything is possible, but when you can achieve such good performance from double glazing, and ensure an elegant looking window, there is little reason left to choose triple glazed sash windows.
Kingsbridge Range
Kingsbridge Joinery has Launched a New Range of Energy Efficient Wood and Aluminium-Clad Windows & Doors.
In an effort to meet customers ever increasing demands for energy efficiency and environmental credentials, Kingsbridge have expanded their catalogue by adding new German engineered low energy wood windows and doors.
Kingsbridge’s new window range includes 3 different operating systems;
- Tilt & Turn
- Outward Casement, and,
- Sliding Sash windows.
The 3 energy options offered will give overall window performance of;
- Double glazed 1.5W/m2K
- Triple glazed 1.0W/m2K
- Passive 0.78W/m2K
This range can be manufactured in a range of timbers from Redwood to Hardwood and even Oak. All timbers are responsibly sourced and finished with environmentally friendly paint finishes, which make wood the truly ‘natural option’. Tilt & Turn and casement windows also have the option of aluminium cladding which give a maintenance free finish and will prolong the life if the timber windows.
This new range will allow Kingsbridge to offer a comprehensive range of timber windows and doors to meet the requirements of every home and every budget. Replacing old windows with energy efficient units will give homeowners substantial savings on heating bills.
