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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)와 polycarboxylate superplasticizer (PCE)—that enhance impermeability, flexibility, and long‑term strength.

Basements

Bathrooms

Water Tanks

Swimming Pools

Exterior Walls

Waterproof Mortar Application

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Proven Performance Professional Grade

Impermeability

Blocks moisture penetration

유연성

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.

01

HPMC / MHEC

셀룰로오스 에테르

• 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

재분산성 폴리머 파우더

• 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

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Swimming Pools

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Basements

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Bathrooms

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Water Tanks

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Exterior Walls

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01

LANDERCOLL HPMC K200

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Optimize Water Retention and Workability

LANDERCOLL® HPMC K200 offers superior moisture retention and smooth application performance. It ensures steady curing, improved bonding strength, and even mortar consistency, making it essential for waterproof and repair mortars.

주요 이점:

✓ Excellent water retention for complete hydration
✓ Anti‑sag and easy troweling on vertical applications
✓ Extended open time and smooth application flow
✓ Improved bonding on porous and non‑porous surfaces

02

ACCURATE RDP 8035H

ACCURATE™ RDP 8035H

소수성 재분산 폴리머 파우더

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.

주요 이점:

✓ 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.

주요 이점:

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

04

NOVASTAR Silicone Hydrophobic Powder

NOVASTAR™ Silicone Hydrophobic Powder

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.

주요 이점:

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

05

LANDU Defoamer Powder

거품 제거제 파우더

Air Elimination Additive

Air‑Free, Smooth Surface Finish

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

주요 이점:

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

Recommended Dosage Guidelines

첨가제	Typical Dosage Range	Application Remarks
HPMC / MHEC	0.2 – 0.5 % by cement weight	Improves water retention and open time
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LANDU 제조 시설

20+ 년수

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for various climates and raw materials

75,000 tons Annual Output

with global logistics network

Advanced QC System

MVR, DSC, and SIS analysis for consistent quality

구매 전에 시험해보기

Experience LANDU Quality

Request Free Samples Today

Test LANDU additives directly in your waterproof mortar formulations to validate performance before ordering in bulk.

Sample Package Includes:

200 – 600 g of requested products
Product brochure and TDS (Technical Data Sheet)
Dosage and formulation guidance
Customized support from LANDU R&D engineers

Why Try LANDU Samples?

✓ 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 무료 샘플

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LANDU 기술 지원

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

기술팀에 문의하세요 →

Schedule Consultation

Common Questions

자주 묻는 질문

Waterproof Mortar Additives

Q1

Which additive improves both waterproofing and flexibility?

Answer:

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

Q2

How do I enhance waterproof performance in harsh environments?

Answer:

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Q3

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Answer:

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아직 질문이 있으신가요?

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기술팀에 문의하세요 →

LANDU Professional Team

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Why Contact LANDU?

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Free samples for performance validation

Test our additives in your actual formulations

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Tailor‑made formulation and dosage support

Customized solutions for your specific needs

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OEM branding & custom packaging available

Build your brand with our quality products

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Reliable worldwide shipping and technical service

Global logistics with expert support

Send Inquiry Now →

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