Metakaolin boosts many desireable properties of concrete countertops. It provides higher early strengths, decreases porosity, increases compressive, tensile and flexural strengths, and it reduces drying shrinkage and aids in finishability when it is trowelled.

However, fabricators should understand how metakaolin works and what potential drawbacks to consider. This article discusses in detail the effects of metakaolin on integral color and acid staining, as well as explaining exactly how it influences effloresence. It then gives recommended dosage and shows how the use of metakaolin influences material cost.