The Benefits of Redispersible Polymer Powder (RDP) for Tile Adhesives

What is Redispersible Polymer Powder?

Redispersible polymer powder is a very fine powder that contains small molecules called polymers. These polymers are derived from water-based emulsions such as acrylics, vinyl acetate-ethylene (VAE), and styrene-butadiene rubber (SBR). When these polymers are dispersed in water, they form a film on the surface of the adhesive that enhances its strength and durability. The result is a strong bond between tiles and other surfaces.

Redispersible polymer powder is essentially a water-soluble polymer in powder form. It dissolves easily in water and helps to improve the properties of tile adhesives, such as flexibility and strength. This means that surfaces bonded using RDP are less likely to crack or break over time.

RDP film

How Does Redispersible Polymer Powder Work?

When RDP particles come into contact with water, they swell up and form a film on the surface of the adhesive. This film helps to create a stronger bond between tiles and other surfaces by reducing the amount of water needed for proper adhesion. As an added bonus, RDP also helps to improve the flexibility of tile adhesive so that it can withstand temperature changes without cracking or becoming brittle over time. Additionally, RDP provides excellent resistance to moisture which prevents mold from growing beneath tiles or other surfaces that were applied with tile adhesive containing RDP particles.

The Benefits of Using Redispersible Polymer Powder

When used in tile adhesive, RDP offers numerous benefits including better adhesion, improved flexibility, and increased durability. The use of RDP ensures that the bond between two surfaces is strong enough to withstand the rigors of everyday life without cracking or breaking. Additionally, it prevents moisture from seeping into the adhesive and weakening it over time.

RDP for tile adhesive

RDP also helps to reduce shrinkage when curing so that surfaces are less likely to warp or buckle over time. Furthermore, it improves the overall elasticity of the adhesive so that it remains flexible under stress instead of snapping or cracking as other adhesives would. This makes it ideal for applications where some degree of movement is expected over time (such as flooring).


In summary, redispersible polymer powder offers many advantages when used in tile adhesive applications. It helps improve flexibility and strength while preventing moisture from seeping into the adhesive and weakening its bond over time. Additionally, RDP reduces shrinkage during curing which helps prevent the warping or buckling of surfaces bonded with its use. For these reasons and more, it is strongly recommended to use dispersible polymer powder in your tile adhesive formulation.

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