Superior exterior durability and UV light resistance
	High temperature stability
	Low-temperature flexibility down to -15 degrees
	Dirt pick-up resistance
	Excellent adhesion to polyurethane foam and many other substrates
	High reflectivity which reduces roof surface temperatures, thereby prolonging roof life and reducing interior temperatures and energy costs
	Easy 'application by spray, brush, or roller - thus lowering application costs
	Low toxicity and odor
	Simple water cleanup for manufacturers and contractors

THERM-A-SHIELD ®

THERM-A-SHIELD ® latex was specifically designed for superior wet and dry adhesion to low and high-density foam. THERM-A SHIELD ® also exhibits excellent adhesion to a variety of other construction substrates.

Typical Performance properties of THERM-A-SHIELD ® Elastomeric Roof Coating

Listed below are the individual properties inherent in THERM-A-SHIELD technology. It is important to remember that it is the balance of these properties that is unique to this chemistry. Although coatings based upon other technologies may exhibit excellence in one or two performance properties, it is the combination of all the properties that is required for a successful elastomeric roof coating.

Durability

Since the advent of Plexiglas acrylic plastic sheet during World War II, acrylics have been known for their exceptional durability, offering unequaled resistance to degradation by sunlight and moisture. It was the UV resistance of the acrylic polymer the lack of which is the major cause of failure in conventional roof systems - that first led manufacturers to consider acrylic polymers for elastomeric roof coatings. Through THERM-A-SHIELD® technology these acrylic polymers have been tailored specifically for elastomeric roofing applications, although THERM-A-SHIELD® affords many more hi-tech and practical uses, such as hot and cold industrial plant pipes.

High-Temperature Advantages of Conventional Coatings

THERM-A-SHIELD®' s formulation of ceramic-filled product allows increased insulation over the more conventional coatings now available.

Tensile Strength and Elongation

Thermal movement of a roof requires high tensile strength and elongation as well. The tolerance for movement of these coatings is essential due to the dynamic nature of a roofing substrate which expands and contracts due to climatic conditions and the shifting and settling of the foundation.

These properties also give properly formulated elastomeric roof coatings the needed flexibility and elasticity to withstand impact from foot traffic and other abuse without rupturing.

Low Temperature Flexibility
Coatings for dimensionally unstable roofing substrates must have long-term low-temperature flexibility. This is necessary to accommodate thermal expansion and contraction of the substrate, so that coatings will not fail over an extended period of time or with extreme weather conditions.

It should be remembered that the effects of extreme weather conditions are not restricted to cold climates. Evaporation of water after a sudden thunderstorm on a hot day in any geographic location can rapidly drop the roof temperature as much as 100 degrees, causing severe thermal stress on the roof surface.

Roof coatings based on THERM-A-SHIELD® technology can withstand a 180 degree flexibility bend at -15 degrees without cracking. Since there is no plasticizer to migrate from the system, this flexibility is retained over time. Long term resistance to cracking extends the life of the roof. It is important to note that elastomeric roof coatings should exhibit good mechanical properties at room and low temperatures before and after exterior exposure.

Stop Leaks
THERM-A-SHIELD® stops most small holes by application directly to surface substrate.

Dirt Pickup Resistance
Polymers designed for THERM-A-SHIELD® elastomeric roof coatings combine the inherent flexibility of pliable, low Tg polymers with long-term resistance to dirt pickup. Without dirt pickup resistance, the roof coatings would quickly darken with age. Because dark materials tend to absorb heat, dirt pickup can significantly increase roof surface temperatures which, in turn, increases interior temperatures and energy costs. THERM-A-SHIELD®-based coatings, however, resist dirt pickup and retain their white, reflective appearance.

Test roofs have shown that after five years of exposure, the surface temperature of the THERM-A-SHIELD®-based acrylic coating was 35 degrees cooler that that of a conventional caulk polymer coating and 85 degrees cooler than a black uncoated roof.

THERM-A-SHIELD® Elastomeric Coatings
Although designed specifically for superior wet and dry adhesion to high and low density polyurethane foam. elastomeric roof coatings properly formulated with THERM-A-SHIELD® latex polymer exhibit excellent adhesion to other typical roofing substrates. A variety of ceramics, color chips and metal oxide pigments can be used to produce tinted roofs. THERM-A-SHIELD®-based elastomeric roof coating formulations can vary due to different climates.

Actual Performance Properties of
THERM-A-SHIELD® Ceramic Elastomeric Roof Coating

Tensile Strength and Elongation
THERM-A-SHIELD® ceramic insulating coatings expand and contract along the roofing substrate to which they are applied because of their excellent tensile strength, elongation and recovery properties. Resistance to cracking will be maintained upon long-term exterior exposure because THERM-A-SHIELD® acrylic does not require a plasticizer.

Typical tensile strength, elongation and recovery properties of THERM-A-SHIELD® ceramic elastomeric roof coating are shown in Table 1.