Redispersible Polymer Powder (RDP) for Self-Leveling Underlayments (SLU)

High-Performance Redispersible Polymer Powder for Self-Leveling Underlayments (SLU)

Enhance Flowability, Adhesion, and Crack Resistance in Cementitious and Gypsum-Based Leveling Systems.

Why Choose Our RDP for Your Self-Leveling Mortar?

Redispersible Polymer Powder RDP for self-leveling floor mortar
High-performance RDP powder for self-leveling flooring. Improves adhesion, flexibility, crack resistance and durability of self-leveling compound. Factory direct supply.

In the global construction market, Self-Leveling Underlayments (SLU) account for 6%–8% of specialized mortar usage. To meet the rigorous demands of industrial floors and high-end residential substrates, our Redispersible Polymer Powder (RDP) is engineered to provide superior rheological properties and mechanical strength.

Whether you are formulating for wood flooring base layers or heavy-duty industrial coatings, our RDP ensures a flawless, level finish with minimal dosage.

Key Performance Advantages 

Optimizing your SLU formula with our RDP (typical dosage: 0.8%–2.5%) delivers measurable improvements in mortar quality:

  • Superior Flowability & Levelling: Achieves a flow diameter of ≥140 mm. Ensures a smooth, mirror-like surface with zero bleeding and no segregation.

  • High Bond Strength: Increases adhesion to substrates to ≥0.8 MPa, effectively preventing de-bonding, shelling, or hollow-out issues.

  • Enhanced Flexural & Wear Resistance: Boosts flexural strength by 30%+ and significantly increases surface hardness, making the floor suitable for heavy load-bearing environments.

  • Crack Mitigation: Reduces shrinkage during the curing process, ensuring long-term structural integrity for thin-layer applications.

Primary Applications

Our RDP is the core additive for high-performance leveling systems:

  • Cement-based & Gypsum-based Self-Leveling: Precision leveling for diverse chemistries.

  • Subfloor Preparation: Creating the perfect base for wood floors, PVC, and epoxy floor paints.

  • Industrial Flooring: High-durability surfaces for warehouses and factories.

  • Thin-Layer Construction: Stabilizing performance in high-efficiency, low-thickness applications.

Technical Specifications & Recommendation

Property Value/Standard
Appearance White Powder, Free-flowing
Protective Colloid Polyvinyl Alcohol (PVA)
Minimum Film-Forming Temperature (MFFT) Approx. 0°C
Recommended Dosage 0.8% – 2.5%
Main Function Adhesion, Flexibility, Flow Control

FAQ：

Q: How does RDP improve the flow of self-leveling mortar?

A: RDP acts as a lubricant and stabilizer, reducing internal friction between particles to achieve a flow diameter of ≥140 mm without compromising the water-to-cement ratio.

Q: Is this RDP compatible with gypsum-based systems?

A: Yes, our RDP is chemically neutral and specifically tested for high compatibility with both Portland cement and Alpha-Calcium Sulfate Hemihydrate (Gypsum) systems.

Q: Is this RDP compatible with gypsum-based systems?
A: Yes, our RDP is chemically neutral and specifically tested for high compatibility with both Portland cement and Alpha-Calcium Sulfate Hemihydrate (Gypsum) systems. It also maintains excellent compatibility when used together with Hydroxypropyl Methyl Cellulose (HPMC) and Polycarboxylate Superplasticizer (PCE) in both cement-based and gypsum-based self-leveling compounds.

Call to Action 

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