Cool Roof Coatings
Cool Roof coatings have steadily become a more popular form of protection against the elements over the last few years, mainly because Cool Roofs can deliver high solar reflectance and high thermal emittance (the ability to radiate absorbed or non-reflected solar energy). These systems can be sprayed on or rolled on to your roof like most paint. These acrylic elastomeric or silicone based coating can be much ticker and full bodied than your normal paint and deliver performance that will definitely outperform your everyday standard paint products. These systems can be used in conjunction with cold applied liquid emulsion and fiberglass matting to provide a complete roofing system without the need for old roof removal.
PROS: Less than half the price of a complete new BUR roof, provides you with a warranty close to that of most basic built up roof systems, extend the roof service life and achieve cooling energy savings in hot summers. No roof removal required, less debris, no smell of tar, no direct flames on the roof. Easy and fast application.
CONS: Without a proper maintenance program to keep the material clean, the energy savings of cool roofs can diminish over time. They are thin and do not as long lasting as a BUR (built up roofing system). In open beam homes or structures with no attic space or insulation, they can make for a colder winter. They have to be re-coated every 8-12 years.