This is a case study in a residential house and the photo is taken by an Infrared where the air-conditioner and fan were both OFF. The owner of the house has installed the blackout curtain to reduce the solar heat. However, they found out the blackout curtain did not help to reduce the heat but absorb heat and increased the room temperature.

They seek for ESG COATES for professional advice in regards to this situation. ESG COATES recommended KristalBond liquid glass coating for their glasses in order to reduce the solar heat and UV.

The result of the functional glasses is significant. Please see the finding as below:

Sp1 – the window is opened with a gap, outdoor temperature is 39°C at 4.00pm facing direct west.

Sp2 & Sp3 – all glasses are coated with KristalBond. The glasses are blocking the solar ray penetrating to indoor effectively, thus the glass surface temperature is much higher than the normal uncoated glass. In this case the temperature has achieved to 45-49°C. This prove that the solar heat is captured by the coating on the glass surface and prevent/minimise heat penetration to indoor.

Sp4 to Sp8 – Normally blackout curtain will absorb & retain heat due to the characteristic of textile materials.  However, in this case the blackout curtain’s temperature in between 36-38°C only. This proof that the heat from the coated glass did not re-radiate back to indoor or absorbed by blackout curtain.

It makes the room maintain at a comfortable temperature and helps to save energy.