I have come across Shieldcoat's Thermobond Heat Reflective Paint (also known as HRC).
Here is a little quote from the manufacturer about the product:
Sheildcoat also claim that the product reflects 88% of heat from the sun in the form of visible light and infrared.It's the ultimate surface coating that will not only give you the best-looking roof in the street, it will help keep you cool on even the hottest of days!
I came across a product data sheet pdf which has a few more details, and also explains the proper application technique (I have the file on my computer, but I think it can be found online).
The paint is applied by airless spray using a 521 tip size. Mouldshield C needs to be applied first, then 1 coat of Shieldseal W Plus with 517 airless tip, followed by 2 coats of Thermobond HRC with 521 airless tip.
But has anyone actually used it?
I tried looking around online, but I could not find many user reviews.
I am especially interested in seeing if you have found if the product is effective in reducing the heat in a house. Is it good marketing, or does it actually work?
Look forward to your replies, thanks guys.