What is a redispersible powder?

Redispersible powder is a polymer powder that has been specially designed to improve the properties of cementitious or gypsum-based materials, such as mortar, grout, or plaster. This powder is made by spray-drying a mixture of polymer emulsion and other additives to form a free-flowing powder that can easily be re-dispersed in water.

When the redispersible powder is added to a dry mix, it forms a film on the surface of the cement particles that improves adhesion, water resistance, flexibility, and workability. The polymer film also prevents the cement particles from clumping together, which reduces the risk of cracking, shrinking, or sagging in the final product.

Redispersible powders are commonly used in construction applications to improve the performance of cementitious or gypsum-based products, especially in high-performance applications where durability, strength, and flexibility are required. They are also used to enhance the consistency and workability of dry mixes, which makes them easier to handle, spread, and finish.