ROOF COATINGS

Elastomeric roof coatings and mastics formulated with Kraton™ G SEBS polymers combine long-lasting protection against water penetration and ponding with reduced total project costs. This next-generation, solvent-based coating formulations are low-viscosity, low-VOC systems and are easy to spray or trowel onto roof surfaces, offering excellent adhesion to a wide range of roofing substrates.  Kraton G SEBS-based coatings are highly elastic and durable, minimizing maintenance. Its excellent dirt-pickup resistance help maintain an aesthetically attractive, reflective and radiative surface.

DIRT PICK UP RESISTANCE 

Coatings made with Kraton polymers resist dirt pick up to improve long-term durability and reflectance while delivering excellent water resistance and extremely low porosity. Water and stain resistance produces coating surfaces with better color retention. Hydrogenated polymers, such as Kraton™ G1643, also feature excellent UV resistance and good resistance to weathering, yellowing and staining for extended durability and service life.

Testing completed on Kraton G 1643-based coatings placed in iron oxide slurry for 500 hours demonstrated improved performance compared with typical acrylic formulations.

RADIATIVE PROPERTIES

Coatings made with Kraton SEBS polymers exhibit excellent radiative properties. Testing showed best-in-class performance initial reflectance and emittance. Samples prepared with the Kraton G1643 starting point formulation exhibited:

• Reflectance: 0.89 ASTMC1549
• Emittance:    0.88 ASTMC1371

ASTM D6083 TEST DATA

Mastics manufactured using Kraton G SEBS provides roofing contractors with the flexibility to facilitate application and enable complete seam sealing. The mastics resist cracking, even after repeated high/low temperature cycling. Kraton G SEBS polymers can be used to formulate primers for low surface energy materials. Kraton G-based formulations are also well suited for waterproofing building envelopes.

Kraton coatings formulations can be installed in nearly any weather conditions, even at low temperatures and wet or humid environments. Kraton G SEBS polymers provide for rapid drying; second coatings can be applied within four hours on most projects.

FEATURE AND BENEFITS

• Superior water resistance (resists ponding)
• Permits application in humid, cold, and wet conditions
• Extends coating life
• Excellent adhesion to various roofing substrates
• Reduces total installation costs
• Can be formulated to meet lower VOC regulations or wider VOC formulation latitude

USED FOR:

• Elastomeric roof coatings
• Building envelope
• Mastics
• Primers for low surface energy materials

PRODUCTS

• Kraton™ G1643
• Kraton™ MD1653
• Kraton™ MD1648

FORMULATION

STARTING FORMULATION – 250 G/L VOC AT 53% SOLIDS