Wall Putty Additives are specialized chemical components used in cement-based wall putty or skim coat formulations. By integrating cellulose ethers and RDP powders, additives enhance performance across multiple dimensions.
Improve water retention and extend open time for optimal workability
Superior bonding to diverse substrates for lasting performance
Increase application ease with exceptional surface finish
Reduce shrinkage and prevent surface cracking effectively
Boost long-term performance and structural integrity
These additives allow contractors and manufacturers to produce high-performance putty formulations that are easy to apply, long-lasting, and visually flawless.
LANDU Wall Putty Additives are designed for diverse construction and finishing applications
Cement-based interior wall putty and skim coats for living rooms, offices, hotels
Exterior plaster and rendered surfaces for weather-resistant facades
Surfaces of thermal insulation systems requiring specialized treatment
Cement fiber boards, bricks, AAC/ALC blocks, and various building materials
Decorative mortar surfaces requiring premium aesthetic quality
Walls prone to moisture, cracking, or high traffic conditions
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Increase Adhesion, Flexibility, and Durability
4025N RDP is a semi-flexible redispersible polymer powder that improves bonding strength and crack resistance in wall putty. It forms a flexible polymer film as the putty dries, enhancing durability and surface smoothness.
With decades of experience in cellulose ethers and RDP powders, LANDU ensures every additive delivers consistent workability, adhesion, and crack resistance.
| Additive Type | Dosage Range | Purpose |
|---|---|---|
|
HPMC / HEMC
|
0.5–2% by weight of cement | |
|
RDP
|
2–5% by weight of cement |
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Everything you need to know about LANDU Wall Putty Additives
A: HPMC (Hydroxypropyl Methyl Cellulose) acts as a water-retaining agent and thickener. It improves workability, extends open time, prevents shrinkage, and ensures smooth, crack-free finishes.
A: HEMC (Hydroxyethyl Methyl Cellulose) provides higher thermal resistance and better viscosity stability in hot environments, making it suitable for warm climates or exterior surfaces. HPMC is ideal for standard indoor or moderate temperature applications.
A: RDP enhances adhesion, flexibility, and durability. It forms a flexible polymer film as the putty dries, preventing cracking, improving tensile strength, and ensuring long-lasting smooth walls.
A: Yes. The combination of cellulose ether + RDP improves flexibility and reduces shrinkage, making it ideal for high-rise buildings, large wall areas, and thermal insulation substrates.
A: Compatible with cement fiber boards, bricks, AAC/ALC blocks, concrete, rendered surfaces, decorative mortar, and thermal insulation systems.
A: Dosage depends on substrate type, environmental conditions, and desired performance. Typical ranges:
LANDU provides technical support for precise formulation guidance.
A: Absolutely. HPMC and HEMC increase water retention, extend open time, and make the putty easier to spread, ensuring smoother and more uniform surfaces.
A: Yes. With RDP and HEMC, additives enhance adhesion, flexibility, and resistance to temperature, moisture, and UV exposure, making them ideal for exterior facades.
A: Yes. Combining cellulose ether + RDP ensures the best balance of workability, adhesion, crack resistance, and durability.
A: HPMC and HEMC retain water in the mix, slowing down drying and extending open time. This prevents cracks, improves adhesion, and ensures smooth application.
A: Powdering usually results from poor bonding or rapid moisture loss. Using LANDU HPMC/HEMC + RDP improves adhesion, water retention, and film formation, minimizing powdering.
A: Yes. Additives are suitable for interior living spaces, offices, hotels as well as exterior facades and high-traffic areas, providing consistent performance under different environmental conditions.