RDP for EIFS or ETICS
Redispersible Polymer Powder (RDP) is a key additive in Exterior Insulation and Finish Systems (EIFS) and insulating mortar. In EIFS, RDP enhances adhesive strength, flexibility, and durability for the adhesive, base coat, and finish layers. In insulating mortar, RDP improves cohesion, reduces water absorption, and strengthens the lightweight structure. It ensures long-term performance, weather resistance, and system reliability in both applications.
Popular RDP Grades in EIFS or ETICS
| Type | Polymer Base | TG/ ℃ | Flexibility | Advantage | Recommendation |
|---|---|---|---|---|---|
| RDP Poly 795 | EVA | -5 | High |
-Excellent flexibility |
-EPS boards on uneven surfaces -Extreme climate zones with wide temperature swings |
| RDP Poly 805 | EVA | 5 | Medium | -Good strength and flexibility |
-General-purpose bonding for EPS/XPS -Most common climates and standard substrates |
| RDP Poly 810 | EVA | 10 | Neutral | -High Strength, Fast grab, Stiff mortar |
-XPS/Rock Wool boards requiring high initial grip -Stable substrates in mild climates |