External Thermal Insulation Composite Systems Additives

• HPMC: Base coat and adhesive mortar; excellent water retention and general performance
• HEMC: Higher thermal resistance; suitable for warm climates
• HEC: Finish coats; ensures smooth surface and aesthetic color options

Yes. The combination of cellulose ether and RDP forms a flexible, crack-resistant wall system.

Absolutely. HPMC, RDP, starch ether, and deformers can be blended; LANDU provides dosage guidance and formula optimization.

Yes. All products comply with ISO 9001, EU REACH, and international chemical safety standards.

Click Request Free Sample; our team prepares a tailored package for your EIFS formulation needs.

Typically, 0.3–0.7% by weight of dry mortar. Exact dosage depends on desired open time, workability, and adhesion. LANDU provides technical support for dosage optimization.

Recommended dosage is 3–6% by weight of dry binder, depending on flexibility, crack resistance, and substrate type. LANDU can provide a customized formula for your project.

Yes. HPMC K100 enhances water retention and workability, while RDP 5011N improves adhesion and flexibility. Combined, they provide superior crack resistance and long-term durability.

Yes. Our HPMC, HEMC, HEC, and RDP powders are suitable for exterior thermal insulation systems as well as interior wall base coats and skim coats.

Cellulose ethers and RDP powders should be stored in a cool, dry place, away from direct sunlight and moisture. Proper storage ensures consistent performance.

Yes. HPMC K100 + RDP 5011N combination increases flexibility, tensile strength, and adhesion, minimizing cracking caused by shrinkage or environmental stress.

Yes. Our cellulose ether and RDP powders are compatible with cementitious and lime-based mortars, as well as polymer-modified EIFS formulations.