RDP for Self-leveling Compounds
Redispersible Polymer Powder (RDP) is a key additive in self-leveling underlayments. It significantly improves the mortar’s flowability and workability, allowing it to spread smoothly and form a perfectly level surface with minimal effort. RDP also enhances the cohesion of the mix, preventing segregation and water bleeding.
Furthermore, RDP increases the compound’s adhesion to the substrate and reduces the risk of cracking by providing flexibility. This results in a durable, high-strength, and reliable floor leveling solution suitable for various finishes.
Popular RDP Grades in Self-leveling Compounds
| Type | Polymer Base | TG/ ℃ | Flexibility | Recommendation |
|---|---|---|---|---|
| RDP Poly 795 | EVA | -5 | High |
-Cement-based self-leveling mortar (underlayment/general purpose) -Composite-based self-leveling mortar -Rapid repair self-leveling mortar |
| RDP Poly 812 | EVA | 10-15 | Neutral |
-High-strength wearing course self-leveling mortar (primary application) -Cement-based self-leveling mortar (wearing course/abrasion-resistant layer) |
| RDP Poly 820 | EVA | 18-22 | Low |
-High-strength wearing course self-leveling mortar (for extreme abrasion resistance) -Special industrial flooring (e.g., for heavy-duty workshops) |