Water catchment systems need an NSF-approved elastomeric roof coating if potable water is required. NSF-approved products provide assurance the water used in rainwater collection systems will be safe for clean water use.
NSF Protocol 151
Solvent-based, silicone roof coating with 267% elongation and 69% solids. Stands up to permanent ponding water conditions.
Solvent-based, silicone roof coating with 190% elongation and 97% solids. Stands up to long-term ponding water conditions. California VOC Compliant.