Kymax® | Hydro-Stop

KYMAX is an innovative technology based on Kynar® Aquatec PVDF fluoropolymer resin, designed to deliver the proven durability and performance of traditional Kynar® PVDF coatings. However, rather than requiring high temperature baking, it is an air-dry finish that cures at ambient temperatures. KYMAX is a low-build elastomeric finish coating that provides the ultimate in reflectivity, color stability, algae resistance and weatherability over new or existing roof surfaces. Although it is highly flexible, it exhibits a tough, enamel-like finish that resists abrasion, biological growth, dirt, acid rain and all types of weather extremes.

Kymax Brochure

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Advantages and Benefits:

High Reflectivity/Emissivity – KYMAX has been tested and certified by the Cool Roof Rating Council to have a Solar Reflectance of 0.87 and a Thermal Emittance of 0.89. An independent test report performed by Atlas Material Testing Solutions calculated the Total Emittance at .94. The Solar Reflectance Index is 110 per ASTM E1980, which is among the highest of any roof coating system.
Reduced Energy Costs – KYMAX has the unique ability to repel dirt, biological growth, pollution fallout and other contaminants, as well as resist degradation from UV and weather exposure. This enables the white topcoat to effectively reflect the sun’s heat over long-term exposure, unlike dark-colored roofing materials that retain heat and are subject to ultraviolet degradation. Roof temperatures can be reduced in excess of 70°F (40°C), which significantly reduces air conditioning loads and lowers electricity costs. Independent studies show a reduction of over 20% in air conditioning use.
Microbiological Resistance – KYMAX was independently tested for fungal resistance as per ASTM G21-96. After exposure to Aspergillus niger, Aureobasidium pullulans,Chaetomium globosum, Penicillium funiculosum and Trichoderma virens for 4 weeks at 28°C, the KYMAX test panels showed no growth.
Color and Gloss Stability – KYMAX is manufactured using Kynar® Aquatec resin, which is based on proven Kynar 500® technology. This PVDF homopolymer is universally known as the world’s most weatherable coating resin, and is virtually immune to UV degradation. The mixed metal oxide pigments used for tinting KYMAX provide ultimate color stability and gloss retention, and are able to provide relatively high reflectivity values even in darker colors.
Code Approvals – KYMAX is UL classified as a Class “A” Fluid Applied Coating System, as outlined in the UL Roofing Materials & Systems Directory and UL website. It is also certified to meet ENERGY STAR®, Cool Roof Rating Council (CRRC), LEED and California Title 24 reflectance and emissivity criteria.

Uses:

KYMAX was designed for application as a thin-build finish coat over the Hydro-Stop PremiumCoat® System.

KYMAX can also be applied directly over approved substrates such as metal or specific single-ply membranes to rejuvenate color and/or increase reflectivity, dirt pick-up resistance, and algae/mildew resistance. Typical substrates include metal roofs, SPF, modified bitumen, PVC, TPO, Hypalon and EPDM.

KYMAX is recommended whenever exceptional weatherability and/or reflectivity are required, whether the threat is algae, mildew, dirt or industrial fallout. It also provides exceptional UV and color stability, even in bright colors.

KYMAX is an excellent barrier to plasticizer migration, and is also effective in preventing asphalt bleedthrough. The natural fire retardancy of the film provides longterm protection, eliminating the need for additional additives that migrate from the film.