HPMC / MHEC for EIFS in Construction

Sep. 06, 2024

EIFS (Exterior Insulation and Finishing System) or ETICS (External Thermal Insulation Cladding System) is a building cladding system that offers insulating, waterproof,

and finished surfaces for exterior walls in a single integrated composite system.

Key points about EIFS:

Material Requirement: Different types of dry mix mortars are used in different parts.

Role of HPMC:

-As a Binder: When combined with components like cement, aggregates, and polymers, HPMC (hydroxypropyl methyl cellulose) acts as an adhesive to ensure the cohesion of EIFS layers.

-As a Thickening Agent: It increases the viscosity of EIFS mixtures, making application easier and reducing the risk of sagging during installation while maintaining the desired texture and appearance of the finish coat.

-As a Water Retention Agent: Controls the water content in the mixture for optimal curing and adhesion by preventing rapid water evaporation and promoting proper hydration of materials.

Application of HPMC in EIFS Construction:

(1) Increases the bonding strength between the insulation plate and the exterior wall, preventing the EPS/XPS insulation board from falling.

(2) Offers better workability during the distribution method.

(3) Has good consistency and non - sagging property.

(4) Good water retention ensures all additives perform optimally and reduces the risk of surface cracks.

(5) Good weather fastness extends the system's service life.

(6) Choosing the right specification of Mailose HPMC/MHEC can enhance the performance of dry mix mortars.

HPMC / MHEC for EIFS in Construction