Standard cement-sand mixes often suffer from cracking, sagging or inconsistent workability on site. For dry mix mortar manufacturers and contractors, reliable cement render and plaster additives are essential for stable application performance across different climates and substrates.
LANDU supplies cellulose ethers and redispersible polymer powders designed for cement render and plaster formulations. Our additive solutions help improve water retention, open time, adhesion and workability while maintaining stable mortar consistency at lower dosage levels.
Benefits of Cement Render & Plaster Additives:
Improved adhesion to various substrates
Increased water repellency and hydrophobicity
Improved water retention, consistency and stability
Reduced primary and secondary efflorescence
Landu products are used to improve the workability, adhesion, flexibility and surfaceresistance of such renders. Additional properties like hydrophobicity, thixotropicity aswell as reduced efflorescence can also be achieved by the use of our specialty additives.
| Additive Type | Main Benefits | Best For |
|---|---|---|
| HPMC (Hydroxypropyl Methyl Cellulose) | Water retention, prevents sagging, improves workability | Vertical surface applications |
| HEMC (Hydroxyethyl Methyl Cellulose) | Enhanced adhesion, excellent workability, better pumpability | Machine-applied renders |
| RDP (Redispersible Polymer Powder) | Stronger adhesion, flexibility, crack resistance | Exterior applications, high-stress areas |
| HPS (Hydroxypropyl Starch Ether) | Thickening, improved workability, refined finish | Smooth finish applications |
Get a free sample of any additive to test in your Cement Render & Plaster formula!
Landercoll® Cellulose Ether
| Product | Grade | Performance |
|---|---|---|
| HPMC | K75、K100、K150 | Good water retention; Good general performance; |
| HEMC | EM80、EM100、EM150 | Good workability; Wide range of applications |
Accurate™ Redispersible Polymer Powder
| 5011N/7118E | 4025N/9028E | 5045N/9055E | |
|---|---|---|---|
| Type | Rigid | Semi-flexible | Flexible |
LANDU supplies a complete range of dry mix mortar additives for cement render and plaster applications.
HPMC is one of the most widely used cement render additives in dry mix mortar formulations.
LANDU HPMC grades are suitable for both hand-applied and machine-applied plaster systems.
Redispersible polymer powder (RDP) plays an important role in improving flexibility and adhesion in cement plaster systems.
RDP is commonly used in exterior render, repair mortar and high-performance plaster applications.
HEMC additives provide stable viscosity and reliable construction performance in cement plaster formulations.
HEMC is particularly suitable for projects requiring stable workability under different environmental conditions.
During mixing, application and curing, cement renders and plasters can suffer from poor water retention, cracking or sagging. The right additives prevent these problems.
LANDU cellulose ether additives help maintain moisture inside the mortar system, allowing for better cement hydration and improved plaster performance.
Our HPMC and HPS additives improve consistency and sag resistance, making render mortar easier to apply on walls and ceilings.
LANDU RDP solutions improve flexibility, adhesion and crack resistance in cement render applications.
LANDU cement render additives help manufacturers improve both mortar performance and construction efficiency.
| Performance Area | Benefits |
| Water Retention | Reduces rapid moisture loss and improves cement hydration |
| Workability | Creates smoother and easier mortar application |
| Adhesion | Improves bonding strength to multiple substrates |
| Crack Resistance | Helps reduce shrinkage cracking |
| Sag Resistance | Improves vertical application stability |
| Open Time | Provides longer adjustment time during installation |
| Consistency | Supports stable mortar quality between batches |
Our additive solutions are suitable for a wide range of dry mix mortar formulations used in residential, commercial and industrial construction projects.
With LANDU, you get accurate products, reliable quality, and outstanding service. Simply send us a message, and we’ll take care of everything!
Our team helps you optimize your Cement Render & Plaster formula for specific applications. We analyze your current product and suggest improvements. Furthermore, we provide custom blends to meet your unique requirements. As a result, you get a formula that outperforms competitors while meeting your cost targets.
