NSF Approved Roof Coatings - Rainwater Catchment Systems

NSF Roof Coating

Collect Rainwater. Grow Tomatoes, Not Water Bills

Rooftop rainwater collection systems are designed to capture rainwater and transported through gutters and other pipes into cisterns or tanks, where it is stored until needed. The water collected can be used for irrigation, laundry, hygiene, or even potable water, depending upon the materials used and the treatment undertaken by the building owner.

NSF Roof Coating Products

NSF Protocol P151 and Standard 61 certification provides assurance to both public health officials and consumers that the system components are safe for use in rainwater collection systems and for potable water applications respectively.

If potable water is needed, take care in selecting materials and elastomeric roof coatings which will come into contact with the water as it is collected, since some impurities can be picked up by the rainwater as it travels through the collection system.

Details of NSF Protocol 151 Approval

  1. Colors: White
  2. Number of Coats: 1-3
  3. Maximum Field Use Dry Film Thickness (in mils): 16 WFT per coat; 46 DFT total for 3 coats
  4. Maximum Thinner: None
  5. Recoat Cure Time and Temperature: 2 hours @ 100°F
  6. Final Cure Time and Temperature: 2 hours @ 100°F
  7. Special Comments: One component coating
  8. Certified only for white roof coating.


EnergyGuard Silicone Coating in Pails
EnergyGuard Silicone Roof Coating

Solvent-based, silicone roof coating with 267% elongation and 69% solids. Stands up to permanent ponding water conditions.

EnergyMax Silicone Roof Coating
EnergyMax Silicone Roof Coating

Solvent-based, silicone roof coating with 190% elongation and 97% solids. Stands up to long-term ponding water conditions. California VOC Compliant.

Andersen AFB 19020
Andersen AFB 19020

Yigo, GU

This newly constructed 18,800sf building at the Andersen AFB in Guam has a concrete roof primed with PrimeLock Epoxy Primer and coated with 45 dry mils of EnergyMax Silicone Coating to keep it cool and leak-free.