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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), dispergovatelného polymerového prášku (RDP), a 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

Flexibility

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

Celulózové ether

• 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

Redispersibilní polymerní prášek

• 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

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Swimming Pools

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Basements

Ochrana proti vlhkosti

Bathrooms

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Water Tanks

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Exterior Walls

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LANDERCOLL HPMC K200

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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.

Hlavní výhody:

✓ 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

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ACCURATE RDP 8035H

ACCURATE™ RDP 8035H

Hydrofobní redispersibilní polymerní prášek

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.

Hlavní výhody:

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

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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.

Hlavní výhody:

✓ 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™ Silikonový hydrofobní prášek

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.

Hlavní výhody:

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

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LANDU Defoamer Powder

Prášek na odstraňování pěny

Air Elimination Additive

Air‑Free, Smooth Surface Finish

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

Hlavní výhody:

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

Recommended Dosage Guidelines

Additive	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 Manufacturing Facility

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Industry Leader

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Certifikováno podle ISO 9001 a EU REACH

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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

Vyzkoušejte před koupí

Experience LANDU Quality

Request Free Samples Today

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

Balíček vzorků obsahuje:

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

Požádejte o svůj bezplatný vzorek nyní

Global Express Delivery via FedEx / DHL

Get Free Sample →

Zdarma vzorek LANDU

Zdarma vzorky 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

Kontaktujte technický tým →

Schedule Consultation

Obecné otázky

Často kladené otázky

Waterproof Mortar Additives

Q1

Which additive improves both waterproofing and flexibility?

Odpověď:

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

Q2

How do I enhance waterproof performance in harsh environments?

Odpověď:

Add NOVASTAR™ SHP hydrophobic powder and cURL Too many subrequests. for higher density and water repellency.

Q3

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Odpověď:

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Odpověď:

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Máte ještě otázky?

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Kontaktujte technický tým →

Profesionální tým LANDU

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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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