GCP Procor Concrete Sealer 55 Gal Drum

55 Gallon Drum, Water Based, PROCOR® Fluid Applied Membrane Concrete Sealer

Procor Concrete Sealer is a Water-Based Surface Conditioner Designed to Mitigate Problems Associated With The Application of Procor to Cast Concrete and Masonry Substrates in Conditions Where An Air or Vapor Drive is Likely to Cause Blistering or Pinholing of The Procor Surface. Whenever Liquid Applied Coatings are Used Over Cementitious or Other Porous Substrates, The Possibility of Blisters and/or Pinholes Exists. This Phenomenon is Common to All Liquid Systems and is Caused By The Expansion of Moisture Vapor and Air That is Trapped in The Substrate (Out-Gassing). Blisters and/or Pinholes Are Most Likely To Be Generated On Hot, Sunny Days When The Initial Temperature of The Substrate is Relatively Ow, But Increases Rapidly Due To Heat Generated From Direct Sunlight On The Membrane. The Rapid Increase in Temperature Converts The Moisture in the Substrate To The Vapor Phase and Creates A Vapor Drive Towards The Source of The Heat. Any Air Trapped In The Substrate Will Also Expand As It Heats Up. Predicting Whether or Not Blisters Will Form With Complete Accuracy is Not Possible Due To Job Site Variables That Cannot Be Controlled. However, The Guidelines Below Will Help Predict The Probability That Blisters May Form On The Job Site and If Procor Concrete Sealer is Likely To Be Required.