Products for EIFS & ETICS
RDP, HPMC, and HEMC are essential additives in EIFS/ETICS formulations, ensuring the system’s durability, workability, and long-term performance.
Redispersible Polymer Powder (RDP) is the key component in both the adhesive and base coat mortars. It provides critical flexibility, crack resistance, and superior adhesion to both the substrate and insulation boards. RDP significantly enhances the system’s impact resistance, water resistance, and overall weatherability.
Hydroxypropyl Methylcellulose (HPMC) and Hydroxyethyl Methylcellulose (HEMC) are vital in the fresh mortar. They act as water retention agents and rheology modifiers, preventing rapid water loss to porous substrates and insulation boards. This ensures proper cement hydration and polymer film formation. They also provide excellent workability, anti-sag properties, and extend open time for application.
Together, they form the functional backbone of high-performance, reliable EIFS mortars.
RDP Recommendation in EIFS / 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 |