Everyone wants to insulate their homes, but it is not always easy to know where to start.
Heat loss in a home is usually invisible to the naked eye. There is some technology to help with this though: infrared thermal imaging. In the past, thermal imaging has been difficult and costly, but now it is more accessible thanks to cheap portable options.
The principle behind infrared thermal imaging is simple: a special camera is used to take photographs of surfaces. But instead of a pretty photo, you get an image in artificial colours that shows the temperature of the surface photographed:
Now you know the theory, it's time to put it into practice.
To obtain useful results, you should take the pictures when the weather is cold. In order for the fluctuations in temperature to be displayed clearly, there should be at least 10°C difference between the internal and external temperatures.
If you take a thermal image of your home from outside on a cold day, you will see that the areas where heat escapes are coloured red. All you need to work out is why this is the case. You may not have enough insulation, heat may be escaping through the window frame or there might be a thermal bridge.
Thermal imaging can also reveal other issues inside your home:
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