Cement render (cement + sand) is strong and moisture-resistant, while plaster (gypsum) provides a smooth, refined interior finish. Both can be applied over wood stud walls: render is better for textured or durable surfaces, and plaster is preferred for a clean, polished look.

Dongyuan Shengda Cellulose Ether products such as HPMC and MHEC are used as water-retention and thickening agents in cement-based renders and plasters. Beyond improving workability, they also enhance overall mortar performance.

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Improvement of workability and crack resistance

•Dongyuan Shengda Cellulose Ether (Hydroxypropyl Methylcellulose(HPMC)/Hydroxyethyl Methyl Cellulose(MHEC/HEMC)) thicken and retain water in cement renders and plasters.

• Dongyuan Shengda Cellulose Ether (Hydroxypropyl Methylcellulose(HPMC)/Hydroxyethyl Methyl Cellulose(MHEC/HEMC)) enable temperature tolerance, improves fresh mortar density (air entrainment) and workability (rheology)

• Dongyuan Shengda Cellulose Ether (Hydroxypropyl Methylcellulose(HPMC)/Hydroxyethyl Methyl Cellulose(MHEC/HEMC)) promises high performance in stickiness and cement retardation at site.

Improvement of Workability, Adhesion, and Crack Resistance

Dongyuan Shengda Redispersible Polymer Powder (RDP) is widely used in cement-based renders and plasters to enhance flexibility, adhesion, and durability. Beyond its core functionalities, RDP improves multiple performance parameters of cementitious mortars.

Dongyuan Shengda Redispersible Polymer Powder (RDP) forms a flexible polymer film in cement renders and plasters, improving adhesion and reducing delamination. The added flexibility enhances crack resistance by absorbing stresses and limiting micro-crack formation during drying and curing. In combination with HPMC or MHEC, cohesion is improved, leading to better workability, smoother surfaces, and more consistent application. Reduced pore connectivity further enhances durability, increasing resistance to water penetration, freeze–thaw cycles, and long-term shrinkage.