Cellulose Ether for EIFS & Self-Leveling – Flow & Stability
EIFS and self-levelling: two very different flow needs
EIFS/ETICS mortars and self-levelling underlayments pull a formulation in opposite directions. EIFS base coats need water retention, bond and flexibility on insulation board; self-levelling compounds need controlled flow and anti-segregation without losing surface strength.
Role of cellulose ether and RDP
The cellulose ether and RDP choice differs accordingly. In EIFS, a cellulose ether holds water for cure and an RDP raises flexibility and freeze-thaw durability of the base coat over foam. In self-levelling, a low-viscosity cellulose ether stabilises the mix against bleeding and settlement while keeping the high flow the application depends on.
Recommended direction
Every viscosity comes in both NDJ and Brookfield, always with the test conditions – concentration, temperature, spindle and speed – so the number you check on arrival matches the one we shipped against. Note: this application band is derived from our general construction range; the exact grade and dosage should be validated against your specific EIFS or SLU system before bulk purchase.
Validate on your line
Run it in your own formulation – request a sample for a side-by-side comparison test.
Application evidence, not invented case studies.