In our constant efforts to provide our customers with the best products and solutions, we are very excited to bring you the brand new innovation, infra-red cool roof coating. Previously only used by the military, which uses reflective pigments on planes to make them invisible to radar, this ground-breaking technology is now available in roof coating solutions that allow a greater degree of cooling than ever before.
How the Sun Affects Light and Pigmentation
The science behind this technology comes from the energy emitted by the sun at it reaches the surface of the earth. There are three light energy regions – Ultra Violet, Visible and Non-Visible. Ultra violet makes up just 5% of the sun’s energy that reaches the earth’s surface. This type of light is linked to sunburn, but it also leads to polymers in coating being broken down. The visible region makes up 50% of the sun’s energy. Pigment is able to absorb visible light and reflect remaining light – whites are able to reflect the full visible wavelength, black will absorb everything in this wavelength and colours will absorb some light and reflect others. The non-visible region is also known as infra-red light. This light makes up 45% of the total energy emitted by the sun. Heat is a by-product of this light’s radiation – when radiation takes place, surfaces will start to heat.
How Pigments Are Produced
Pigments are created when mixtures of metal hydroxides, nitrates, acetates or oxides are heated to high temperatures. When metal oxides and salts are heated above 1000 degrees C, the solids start to react to form more stable structures. Infra-red pigments that reflect light from the sun may take on any colour.
Why Do We Need Infra-Red Technology?
With a large number of the population living in cities and ‘urban heat islands’, the heat radiated from buildings plays a notable role in adding to the overall amount of heat within the area. Depending on the roof construction, level of heat within the city, the elevation and even the colour of roof coating, heat can vary considerably.
In order to reduce heat and keep buildings cool, it is important for buildings to have cooler roofs. When heating energy from the sun is reflected rather than absorbed, the volume of energy radiated by each building will be significantly reduced. Opacity plays an important role in this too.
Infra-red reflective pigments typically have a high visible opacity that can only transmit infra-red radiations. Thin films of roof coating are not able to reflect all of these radiations, which means that some rays can pass through the coating and into the building. The coating may appear to be very opaque, but it will not be thick enough to reduce infra-red light.
Benefits of Infra-Red Roof Cooling
There are a number of unique benefits offered by infra-red roof cooling coating. Some of the primary benefits of this coating include the following:
- Able to withstand harsh environments while retaining its colour
- Resist to fading from ozone, acid rain and other air pollutants and chemicals
- Eco-friendly solution that reduces heat transfer into buildings
- Reduces need for temperature cooling devices
- Long-lasting and durable roof coating solution
- Reduces air pollution through reduced urban air temperatures
- Reduces landfill wastage by providing a longer lasting roof
- Available in 16 colours
Wilcote is proud to bring you the innovative infra-red cool roof coating for all home and business owners seeking an eco-friendly, long-lasting cooling solution. Our products meet TSR standards according to three US Standards. Contact us to learn more about this incredible product today!