Can Adi-Con CW Plus be added to Meadow-Crete FNP? Yes. Although not tested, Adi-Con CW Plus will reduce flow. Was this article helpful? Yes No Related Articles How fast can Cem-Kote Flex ST be applied to new mortar/block? How long does it need to cure before spray foam can be applied over it? How many days should concrete be cured prior to applying Cem-Kote Flex ST?