Double Glazing Dorset Within Dorset Examines The Question About Whether Triple Glazing Are Really Better Than Double. For years, the idea that bigger is better has been at the center of the domestic window market in the UK. Thermally, whether air or argon cavities, 24 mm is the optimum size, but double glazing grew from 20mm to 24mm until finally settling at 28 mm.
The depths of the frames expanded nominally from 60MM to 70MM despite, there being no significant technical improvement simply with the misconception that bigger is best
The belief has prompted a new question about whether 3 are better than 2 or is triple glazing is a better option than double? (https://dorsetdoubleglazing.uk). There is not an easy way to answer it. The Villain Of This Piece As It Is Usually The Condition Remains In The Detail. To be able to properly answer this question, we need to take into account the personal aspects of a proposed Insulated Glass Unit (IGU).
The present industry standard which is being applied for double glazed units is off one 4 MM pane of low E [low emissivity] coated glass and one pane of 4 MM plain annealed glass along with a 20MM cavity of argon gas [makeup = 4-20-4]
This will give you a centre pane u-value of 1.1 W / kilojalores per metre squared. If we are to propose an additional center panel of glass here, but maintain the overall 28mm thickness (eg 4mm, 8mm, 4mm, 8mm, 4mm) the u-value would be 1.2 W / m2K, which has a decreased performance of effectiveness compared to double glazed. But, we can improve the window’s performance by increasing the thickness of the triple glazed unit by making the cavities between the panes bigger. To get to a u-value of 0.9 W / kilojalores per metre squared the thickness required is 44mm (4-16-4-16-4). This could be improved further still, by adding another low emissivity panel, the u-value would drop to 0.6 W/ m2K.
When this matter is considered at face value with the improvement which has been observed in terms of heat loss because of glazing from 1.1 W/M sq.K to 0.6 W/M sq. K looks to be like an improvement which is worth paying for
The Window Energy Rating Scheme, which is commonly accepted to be the standard for rating the thermal efficiency, measures the solar input through a window and the amount of heat that escapes. The heat caused by the sunlight tear downs apart the number of the triple glazed units.
To solve this problem, and increase the solar light input, low iron glass can be used instead of the traditional glass used in practice, however, this will be a lot more expensive to use
There other elements that must be noticed by every triple glazing provider. Thermal stress can cause units to crack. Due to the centre panel of glass in a triple glazed window not having a free flowing amount of air around it, because it is trapped between two other panels of glass, the temperatures around it can increase and cause some problems. To correct this, use a toughened pane at the middle of the unit, this will unavoidably raise the cost again.
So the response to the initial question is it is possible to enhance the thermal efficiency of IGU by migrating to triple glazing. Maybe, but what will it cost? With energy bills rising on an average that goes into double digit percentages each year, this is something that needs to be taken into account before making a decision.
Dorset can enjoy an excellent service of installation of double glazing windows and doors wioth vents thanks to Double Glazing Dorset https://dorsetdoubleglazing.uk
Our Dorset based company has many years of experience in this field, and have a well established client foundation that is serviced by our window experts. For additional details contact 0800 246 5843 or go to https://dorsetdoubleglazing.uk.