Rutgers University Greenhouse (2012)
Cinder block, also referred to as Cement Masonry Unit or CMU, has traditionally been difficult to coat properly due to the unstable chemical surface, and the effervescence (leaching) of lime from the surface which often leads to paint delamination. This leaching also occurs with some lower quality split-face block. Treatment with CeramycShieldTM stabilizes the surface chemistry and stops effervescence. Examples below on cinder block and split-face block show that these block faces have been coated effectively, with no remaining porosity. The surface, however, remains breathable.
Additionally, cinder block is often used for building exteriors, subject to UV, soiling, and biological growth. CeramycShieldTM is immune to UV and will also stop ingress of dirt and the establishment of biological growth, allowing building exteriors to remain clean and pristine indefinitely. See example of Rutgers University greenhouse, coated in 2012.