The Science
The Science

The exclusive patented technology in Paint Shield® Microbicidal Paint represents the culmination of extensive research and collaboration between Sherwin-Williams coatings scientists and expert microbiologists.

Paint Shield® successfully marries a proven, well-studied microbicide with a waterborne paint. The active ingredient is a quaternary ammonium compound. The result is Paint Shield®, the first EPA-registered microbicidal paint that kills greater than 99.9% of Staph, MRSA, E. coli, VRE and Enterobacter aerogenes within two hours of exposure on painted surfaces. And, according to EPA-test protocol, it continues to kill 90% of these bacteria even after repeated contamination of the painted surface. The effectiveness lasts for up to four years as long as the integrity of the surface is maintained.

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