Triple Glazing Cost
Compared to double glazed units, triple glazed ones are costly to manufacture due to the extra toughened glass pane, extra argon gas chamber, extra spacer bar, and additional transport expenses because of the size and weight. It works out over double-glazing since the extra square metre usually costs about £100 per square metre. This meaning an average square window 4ft (1220mm) would have about 1 square metre glass. Hence this adds about £100 when you translate to an averagely sized double glazed window.
How Much Does a Triple Glazed Window Cost?
While our window range is expansive and there are different material choices and systems you can select from. But by sticking with our basic white uPVC window system with double glazing openings, the value given, when VAT is included, would be about £465 (data is accurate as of July 2019). So when you look at an equivalently triple glazed unit would go for about £565, about 22% more.
Triple Glazing and Heat-Loss Through Windows
In the United Kingdom, homes typically experience 20% heat-loss via the windows or replacement conservatory roofs. Therefore, if you’re thinking about replacing your windows, the most sensible thing you can do is fit the best-insulated products. In this case, you will have to consider the additional cost of triple glazing against heating bill savings, but don’t expect the payback duration to happen overnight. A client who once told us that they wanted to live comfortably felt that triple glazing was the ideal product for them. However, at the end of it, the decision ultimately lies with you.
Benefits of Triple Glazing
Installing triple glazing in your house has an array of advantages, with the main one being heat insulation. One of the top things to bear in mind is that there are different types of triple glazing. Available triple-glazed systems are vast, but to get the optimal benefit, the gaps in the glass panes should be 16mm and filled with an inert gas such as argon. Argon gas helps in reducing heat loss via the windowpanes. When the gap is minimised, the sealed unit’s thermal performance is reduced unless you begin using a high-end gas such as krypton. Hence the maximum triple glazed sealed unit size is 4mm glass, 16mm gaps. The glazing world is referred to as a 4/16/4/16/4 unit and equates to 44mm in total. If you compare the glass u-values (heat loss), then the comparison between a 28mm double glazed unit and a 44mm triple unit is quite large. The u-value of the typical centre pane 44mm unit is 0.62, while that of a double glazed one is 1.1, which is a whopping 40% improvement.
You can select a window depending on the number of glass panes it has; however, you should consider looking at the overall Window Energy Rating (WER). This is the most reliable method to predict the thermal efficiency of windows when they have already been installed.