With summer in hand, cool coat protection is the need of time. Solar reflectance and thermal emittance are the two key material surface properties that determine a roof’s temperature, and they each range on a scale from 0 to 1. The larger these two values are, the cooler the roof will remain in the sun. Cool coats deliver higher solar reflectance and higher thermal emittance than standard designed roofing coats. Standard or dark roofs can reach temperatures of 150°F or more in the summer sun. A roof with a cool coat under the same conditions could stay more than 50°F cooler and save energy and money.
As we strive for high-performing cool roofing systems, we should ask how mixed products fit together to assure functional harmony and maximize performance. Such synergy can be achieved with Mapei’s Aquaflex Roof HR. It is a ready-to-use waterproofing, white product, with high solar reflectance and thermal index (SRI) of 105, for external applications made from synthetic resins in water dispersion, and when dry forms a continuous, flexible waterproofing membrane.Aquaflex Roof HR is resistant to all atmospheric conditions and UV rays, and guarantees long-lasting protection for the substrate.
Aquaflex Roof HR is easy to apply using a longhaired roller, brush or spray on horizontal, sloping or vertical surfaces. Once dry, Aquaflex Roof HR forms a strong, flexible, tack-free dry surface, suitable for occasional light foot traffic. Thanks to its flexibility, the product will withstand normal expansion/contraction stresses caused by temperature variations. Aquaflex Roof HR lowers the surface temperature of the roof by more than 50% compared with a dark coloured covering. Thanks to its SRI value of 105, Aquaflex Roof HR helps qualify for LEED credits by reducing the heat island effect of roofs.
Characteristics and advantages of AquaflexRoof HR
- 83% solar reflectance
- 91% thermal emissivity
- SRI (Solar Reflectance Index) 105
- Reduces the surface temperature of roofs by 50% compared with a dark coloured covering
- Resistant to atmospheric agents and UV rays
- Easy to apply
- Elastic with high crack-bridging capacity
- Excellent adhesion to a multitude of surfaces
- Resistant to light foot traffic
- Supplied ready for use
Application of Aquaflex Roof HR;
- Protection against UV rays and heat for existing waterproof systems made from a distilled-bitumen/ polymer membrane.
- Protecting and waterproofing concrete surfaces,cementitious screeds, screeds made using special binders, ceramics or stone coatings.
Aquaflex Roof HR complies with the principles defined in EN 1504-9 and the requirements of EN 1504-2 coating (C) according to principles PI, MC and IR (“Concrete surface protection systems”).
Cool roofs have many benefits, from lowering indoor temperatures and improving air quality to reducing cooling costs and greenhouse gas emissions. Especially the summer season approaching, it is a great choice for your building structure.
For more information, visit www.mapei.co.in