Silpro C-21 All Acrylic ® is a 100% acrylic latex that can be used as an admix/internal bonding agent or primer. C-21 All Acrylic ® is a water-based cement modifier admix/internal bonding agent that enhances the performance properties of cementitious mortars and coatings. And when you add it to the mix, it forms a plastic matrix, or film, that helps retain water and promotes cement hydration, resulting in improved compression (crushing) strength without wet curing. It gives Portland cement and gypsum mixes greatly improved tensile and flexural strength, flexibility, and maximum adhesion to old or new concrete surfaces for patching, grouting, or coating.

1 gallon jug