Looking at the pros and cons of triple glazing

Any home renovation requires a lot of research and analysis: choosing suppliers, making the budgets work and getting the details right. But choosing your triple glazing shouldn’t be a headache, so we’ll be looking at the pros and cons of triple glazing to simplify your decision making process.

Triple Glazing Pros

1) Comfort


The installation of triple glazing in your home will significantly increase your comfort levels.

Triple glazing not only enables temperature consistency throughout your home, it also prevents condensation and drafts.

A sealed triple glazing unit, consisting of 3 layers of glass and 2 Krypton gas-filled spaces, has superior insulation capabilities. The rate of heat loss through triple glazing, or the U-value, is 0.7, meaning it is twice as efficient as double glazing with a U-value of 1.4. This allows a triple glazing window to maintain an interior surface temperature of 18°C in a room with a temperature of 21°C.

The heat-loss resistance rate, or R-value, of triple glazing is 5, so it is much easier to maintain a stable interior temperature without cold spots. Click here for more on U-values and R-values (insert link to article Triple Glazing vs Double Glazing).

2) Cost saving

The insulation properties of triple glazing not only ensure a more comfortable interior; it also has a cost-saving implication.

The average cost of annual heating per household in the UK comes to roughly £663. Standard double glazing has an average heat loss of 22% per window and triple glazing reduces that heat loss by up to 50%. So through the efficiency of triple glazing, the average reduction in a domestic heating bill comes to 15%.

3) Eliminate interior condensation


Condensation occurs when a surface drops to below dew point and then comes into contact with moisture in the air.

Dew point varies according to location and season, but generally the dew point in the UK between October and May is between -1 and 5°C.

By preventing heat loss from inside, the interior glazing panels are able to maintain a temperature well above dew point, preventing condensation on the interior panes.

4) Increased value of your home

Triple glazing will greatly impact your Energy Performance Certificate (EPC). By making energy improvements to your home, you are able to increase its value by up to 14% on average, and up to 38% in some areas. Read this article for more information.

Triple Glazing Cons

1) Installation Cost


To have triple glazing installed in a standard 3-bedroom home with 15 windows, will cost around £7,275 which is 31% more expensive than double glazing. While the return on investment is significantly quicker, the initial capital investment is more.

2) Weight


Because of the additional materials involved in the manufacture of triple glazing, the weight is increased. Typically, double glazing weighs 20kg/m², where triple glazing weighs 30kg/m². An average window measuring 400mmx1200mm will then weigh 9.6kg with double glazing and 14.4kg with triple glazing.

These weights will have an impact on feasibility of the installation, and this should be checked with your installer. But overall the biggest impact of the weight comes with the handling of the units. Smaller window could still be handled manually while larger units and doors are most likely going to need mechanical handling.

Considering the impact that triple glazing has on your lifestyle, your energy bill and the value of your home, triple glazing is a great investment.

Published on : 24th October 2016

Back to Top

Triple Glazing

Ask our expert a question

We will get back to you soon