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Waterproof Mortar Additives

LANDU Construction Chemicals

High‑Performance Polymer Additives for Cementitious Waterproofing Systems

What Is Waterproof Mortar?

Waterproof mortar is a cement‑based mixture designed to prevent moisture penetration while maintaining strong adhesion and durability. Commonly used in basements, bathrooms, water tanks, swimming pools, and exterior walls, it forms a dense layer that resists water ingress.

Advanced Formula

Unlike ordinary mortar, waterproof mortar contains functional chemical additives—such as cellulose ether (HPMC / MHEC), redispersible polymer powder (RDP), és polycarboxylate superplasticizer (PCE)—that enhance impermeability, flexibility, and long‑term strength.

Basements

Bathrooms

Water Tanks

Swimming Pools

Exterior Walls

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Bizonyított teljesítmény Professzionális minőség

Impermeability

Blocks moisture penetration

Rugalmasság

Resists cracking & movement

Long-Term Strength

Durable protection

Why Additives Matter in Waterproof Mortar

Performance additives are crucial for achieving a truly waterproof, crack‑resistant mortar. They modify the cement matrix to improve bonding, flexibility, and surface durability.

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HPMC / MHEC

Cellulóz-észter

• Retains moisture for full cement hydration
• Improves workability, viscosity, and anti‑sag performance
• Extends open time for convenient application
• Enhances adhesion strength and surface consistency

02

RDP

Redispersible Polimer Por

• Boosts tensile and bonding strength
• Provides flexibility and crack resistance
• Increases hydrophobicity and weather durability
• Enhances film formation for long‑lasting waterproof layers

03

PCE

Polycarboxylate Ether Superplasticizer

• Reduces water demand without affecting workability
• Increases mortar density and cohesion
• Improves impermeability by minimizing capillary pores
• Enhances flow for easier application and compaction

Versatile Solutions

Applications of Waterproof Mortar Additives

LANDU additives are designed for modern cementitious waterproofing applications, including:

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Interior and exterior waterproof plaster

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Waterproof tile adhesive and tile grout systems

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Cementitious waterproof coatings and membranes

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Swimming pools, basements, water tanks, and reservoirs

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Swimming Pools

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Basements

Nedvességvédő védelem

Bathrooms

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Water Tanks

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Exterior Walls

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Termékkínálat

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Fő előnyök:

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Vízlepergető Redispersible Polimer Por

Flexible, Durable, and Water‑Resistant Polymer Additive

ACCURATE™ 8035H RDP enhances mortar flexibility and adhesion while imparting superior hydrophobic properties. It is widely recommended for exterior coatings, bathroom walls, and waterproof plaster formulations.

Fő előnyök:

✓ Outstanding waterproof and crack‑resistant performance
✓ Improved tensile and flexural strength
✓ Enhanced flexibility for deformation resistance
✓ Excellent dispersion and film formation

03

LANDU PCE 570P

LANDU PCE 570P

High‑Range Polycarboxylate Superplasticizer

For High‑Density, Impermeable Mortar Systems

LANDU PCE 570P reduces water demand while increasing flowability and compactness. It helps create high‑density mortars with superior impermeability and cohesion.

Fő előnyök:

✓ Increased strength at lower water‑cement ratios
✓ Improved self‑leveling and pumpability
✓ Reduced shrinkage and porosity
✓ Enhanced long‑term waterproofing durability

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SHP - Surface Water Repellency

Surface Water Repellency & Efflorescence Control

NOVASTAR™ SHP forms a protective hydrophobic barrier inside the mortar matrix, preventing water absorption and minimizing efflorescence.

Fő előnyök:

✓ Excellent water repellency in wet areas
✓ Protection against salt formation and discoloration
✓ Improved freeze‑thaw resistance for outdoor use

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Defoamer Powder

Air Elimination Additive

Air‑Free, Smooth Surface Finish

Defoamer minimizes air entrapment during mixing for a dense, uniform surface—essential for decorative waterproof mortars.

Fő előnyök:

✓ Prevents pinholes and voids
✓ Enhances compressive strength
✓ Provides compact, aesthetic finishes

Ajánlott adagolási irányelvek

Additive	Typical Dosage Range	Application Remarks
HPMC / MHEC	cURL Too many subrequests. by cement weight	Improves water retention and open time
RDP 8035H	2 – 5 %	Enhances flexibility and hydrophobicity
PCE 570P	0.3 – 0.8 %	Reduces water demand for denser mortar
NOVASTAR SHP	cURL Too many subrequests.	Adds surface water repellency and anti‑efflorescence
cURL Too many subrequests.	0.05 – 0.2 %	Removes air bubbles for smooth finish

Actual dosage depends on sand gradation, cement type, and performance target. For optimization, please consult LANDU's technical team.

LANDU Gyártó létesítmény

20+ Évek

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Why Choose LANDU Waterproof Mortar Additives

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ISO 9001 & EU REACH Certified

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Try Before You Buy

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Sample Package Includes:

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✓ Test product compatibility and waterproofing efficiency

✓ Optimize dosage based on your material system

✓ Receive guidance for max adhesion, density, and hydrophobicity

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Global Express Delivery via FedEx / DHL

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LANDU ingyenes minta

Ingyenes minták Available Worldwide

LANDU Technical Support

R&D Labs State-of-the-Art

Expert Assistance

LANDU Technical Support & R&D Capabilities

Two State‑of‑the‑Art Laboratories

for formulation improvement and application testing

Professional Technical Guidance

for waterproof systems and cementitious coatings

Customized Product Development

based on local material analysis and performance benchmarks

Dedicated After‑Sales Service

to ensure seamless production integration

Contact Technical Team →

Schedule Consultation

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Gyakran Ismételt Kérdések

Waterproof Mortar Additives

Q1

Which additive improves both waterproofing and flexibility?

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Use a combination of RDP 8035H és HPMC K200 for optimal bonding and flexible waterproof films.

Q2

How do I enhance waterproof performance in harsh environments?

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Add NOVASTAR™ SHP hydrophobic powder and PCE 570P for higher density and water repellency.

Q3

What is the ideal HPMC dosage for waterproof mortar?

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Typical usage is cURL Too many subrequests. by cement weight depending on viscosity and workability.

Q4

Can LANDU provide formulation guidance?

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Yes. Our R&D team supports full formulation development and performance optimization.

Q5

Do you offer free samples and technical data sheets?

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Absolutely. LANDU provides 200 – 600 g sample kits along with comprehensive TDS and consultation.

Q6

Are your products internationally certified?

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Yes. All LANDU additives are manufactured under ISO 9001 és EU REACH compliance standards.

Még kérdése van?

Our technical team is ready to assist you with customized solutions and expert guidance.

Contact Technical Team →

LANDU Professional Team

Professional Team Ready to Assist

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