New Products
TWO NEW SOLVENT-FREE SILICONE ROOF COATINGS
AVAILABLE FROM WEST DEVELOPMENT GROUP
West Development Group (WDG) has introduced two new
solvent-free silicone roof coatings. HSS 535 and HSS 540
R2R are both one-component, moisture-curing silicone
rubber roof coatings designed for use on sprayed-in-place
polyurethane foam.
These coatings can be rolled or spray-applied and
touch-up work can be done with a brush or a roller. Ready
to use on commercial or industrial roofs, these WDG silicone roof coatings should be applied to a dry, frost-free
surface. They are tack-free within one to two hours and
cure at normal temperatures in two to six hours by reacting with moisture in the air, forming a durable and flexible moisture-free seal.
HSS 535 and HSS 540 R2R are both a dispersion of silicone rubber. Because they are solvent free, which prevents the release of solvents into the air during application, they are environmentally friendly while providing
the same functionality as traditional petroleum-based
roofing materials. In addition, HSS 540 contains 20%
recycled EPDM material that strengthens the silicone
coating’s physical properties and keeps old roofing material out of landfills.
Before commercial introduction, the silicone coatings
were weather tested in a machine for approximately
10,000 hours to simulate nearly 20 years of exposure to
ultraviolet sunlight, moisture, and temperature fluctuation. Following the accelerated weather testing, WDG’s
silicone coatings continued to provide UV protection and
displayed no evidence of degradation such as cracking,
hazing, checking, chalking or loss of film integrity.
HSS 535 and HSS 540 R2R also passed the ASTM E108
flame spread test and obtained Underwriters
