Confilm® evaporation reducer helps produce high quality concrete flatwork and reduces surface moisture evaporation. Because Confilm admixture retards evaporation, it is especially effective in combating rapid drying conditions including, high concrete and/or ambient temperatures, low humidity, high winds, direct sunlight or work in heated interiors during cold weather, etc.


• Reduces surface moisture evaporation about 80% in wind and about 40% in sunlight

• Eliminates or reduces crusting, stickiness and underlying sponginess which often cause unevenness and poor surface texture

• Reduces and, in many instances, eliminates plastic shrinkage cracking and wind crusting of flatwork surfaces

• Supplements the recommended practices for hot weather concreting

• Safeguard against the ill effects of evaporation

• Allows lower slump and lower unit water content in concrete used for flatwork

• Facilitates use of air-entrained concrete, required for durability and workability, in situations where air-entrainment might be avoided for fear that it would increase concrete’s susceptibility to crusting and stickiness under drying conditions


• Virtually eliminates need to add extra mixing water to compensate for rapid evaporation during finishing

• Time and money saved by increasing the amount of surface handled per finisher even under rapid drying conditions

• Timing of the operations is less critical, thus reducing overall cost


Recommended for use in:

• Concrete surfaces where the evaporation rate exceeds the rate of bleeding of the concrete

• Air-entrained and non-air-entrained concrete

• Silica fume concrete

• Concrete containing fly ash