NOVASTAR™ Gypsum Retarder

Powered by LANDU, NOVASTAR delivers high-performance amino-based retardation technology for superior gypsum setting time control, strength retention, and broad system compatibility.

Extend Setting Time

Precise control for optimal workability

Maintain Strength

Superior mechanical properties retention

System Compatible

Works with various gypsum types

China Manufacturer

OEM Custom Solutions

LANDU Engineering

NH₂

COOH

CH₃

Amino

Gypsum Plaster

Gypsum Board

Joint Compounds

Self-Leveling Gypsum

2-8x

Setting Time Extension

95%+

Strength Retention

0.01%

Effective Dosage

NOVASTAR™ Gypsum Retarder by LANDU

Precise and Reliable Setting Control for Gypsum Applications

Premium Quality

NOVASTAR™ gypsum retarder is an advanced, high-performance additive developed specifically for gypsum-based materials. Formulated with amino-based components, this fine powder dissolves quickly and evenly in water, delivering stable and predictable setting control in every batch.

Designed for consistent performance, NOVASTAR™ ensures adequate working time for mixing, applying, leveling, and finishing—making it a perfect choice for gypsum plaster, lime finish coatings, and joint compounds.

Key Advantages of NOVASTAR™ Gypsum Retarder

Accurate Setting Time Adjustment: Provides precise control over the hardening process across various gypsum formulations.

Outstanding Compatibility: Effortlessly integrates into multiple plaster systems without affecting other material properties.

Tailored Formulations: Customizable solutions available to meet specific project or production requirements.

LANDU — A Trusted Partner in Gypsum Additives

As a leading manufacturer of gypsum retarders in China, LANDU offers reliable product quality backed by technical expertise and dedicated customer support. Collaborate with our professional R&D and application teams to develop effective, customized gypsum solutions.

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NOVASTAR™ Gypsum Retarder by LANDU

Protein-Based Retarder Solutions | Wholesale Supply & OEM Services

Product Overview

Product Name:

Gypsum Retarder

Applications:

Gypsum plaster, gypsum board, joint compounds

Certifications:

ISO CANS SGS

Packaging:

25 kg bag

MOQ:

500 kg

Payment:

T/T, L/C, O/A

Shipping:

CFR, CIF, FOB

Lead Time:

7–14 days

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Technical Specifications

Grade:

Construction grade

Appearance:

Light yellow powder

Moisture Content:

≤ 5%

pH (at 20 °C):

7–9

OEM Service:

Custom formulations available

Dosage:

0.05%–0.3%

Fast Delivery

7-14 days lead time

OEM Service

Custom formulations

Quality Certified

ISO, CANS, SGS

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Advantages of NOVASTAR™ Gypsum Retarder

NOVASTAR™ Gypsum Retarder offers a range of performance and economic benefits, making it a preferred choice for gypsum-based materials across diverse applications.

High Efficiency at Minimal Dosage

Delivers precise control over setting time even when added in very small quantities — ensuring cost savings without compromising effectiveness.

Extended Workability

Substantially prolongs the open time of calcium sulphate–based plasters and mortars, with potential extension up to several hours depending on the selected dosage. Ideal for projects requiring longer handling periods.

Outstanding Compatibility

Integrates seamlessly with multiple calcium sulphate binder systems and a wide range of additives, including NOVASTAR™ PCE-based superplasticizers.

Cost-Optimized Application

Allows preparation of large-volume mixes while maintaining workability, reducing on-site application time and lowering labor costs.

No Impact on Strength

Unlike fruit acid–based retarders, NOVASTAR™ preserves the final mechanical strength of gypsum products, ensuring both durability and performance.

Consistent, Stable Quality

Supports reliable production with uniform results, achieving stable processing conditions and consistent appearance in the finished product.

Environmentally Responsible

Produced without formaldehyde or harmful substances, NOVASTAR™ is eco-friendly, non-toxic, and safe for both users and the environment.

Sufficient Supply, Reliable Quality

Advanced manufacturing technology and rigorous quality control ensure consistent performance

Advanced Facility

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Comprehensive Gypsum Solutions

LANDU delivers a complete range of gypsum additives under the trusted NOVASTAR™ brand. Each product is engineered to meet diverse requirements with dependable performance in every formulation.

Quality Assurance

Every batch tested for stability, purity, and global compliance standards

High-Capacity Production

Advanced facilities ensure stable supply for large-scale industrial projects

LANDU OEM Gypsum Retarder Solutions

Partner with NOVASTAR™ for Customized Formulations and Sustainable Growth

Complete Development Services

At LANDU, our commitment goes beyond supplying gypsum retarders — we provide complete OEM and customized development services designed to meet your unique production and performance goals.

Our expert technical team works side by side with each client to create tailor-made formulations that precisely match your desired setting time, raw material system, and local application requirements.

Exclusive Partner Benefits

Competitive Pricing: Stable pricing structures for long-term partnerships

Market Support: Regional development assistance and localized support

Priority Support: Guaranteed supply and dedicated technical assistance

R&D Laboratory

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Top 5 Applications of NOVASTAR™ Gypsum Retarder

NOVASTAR™ Gypsum Retarder is a sustainable, protein-based additive developed for precise control of gypsum plaster setting time. Even at minimal dosage levels, it achieves outstanding retardation efficiency with virtually no loss in final strength.

Gypsum Self-Leveling Compounds

Enhances flow characteristics and significantly extends working time, ensuring smooth surface finishing and uniform leveling performance.

Flow Enhancement Extended Working Time

Gypsum Precast Components

Provides controlled setting and easy demolding, guaranteeing dimensional stability and consistent mechanical strength.

Controlled Setting

Gypsum Wall Putty

Delivers steady, predictable setting behavior for smoother surface finishing and easier trowel application.

Smooth Finishing

Gypsum Board Production

Balances production efficiency with setting-time precision, maintaining consistent performance throughout continuous manufacturing lines.

Production Efficiency

Spray-Applied Gypsum Plaster

Extends open time to accommodate large-area spraying and finishing, improving workflow speed and reducing material waste.

Extended Open Time

FREE SAMPLE

Get Your Free NOVASTAR™ Gypsum Retarder Sample!

Discover the superior performance and consistency of NOVASTAR™ gypsum retarder — absolutely free of charge. Experience how our advanced protein-based formulation enhances setting control, workability, and product quality in your gypsum applications.

Click below to request your free sample and see why professionals worldwide trust LANDU as their reliable gypsum additive partner.

Superior Performance Testing

Fast & Free Shipping

Technical Support Included

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Don't miss the opportunity to upgrade your gypsum systems with NOVASTAR™ quality!

Your Trusted Partner for Chemical Solutions

LANDU | NOVASTAR™ Additive Solutions for Construction and Industrial Applications

Laboratory Capabilities

Advanced R&D and testing laboratories ensure product consistency and continuous innovation across all additive categories.

R&D Excellence Quality Testing

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Service Support

Complete customer-centered service from technical consultation to after-sales assistance for long-term project success.

24/7 Support

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Production Facilities

Automated production lines with robust quality control deliver large-scale capacity and reliable supply globally.

Global Supply

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OEM Solutions

Tailor-made formulations with custom packaging and labeling to strengthen your brand identity and market presence.

Custom Brand

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Global Delivery

Flexible payment options (T/T, L/C, O/A) with international trade terms and fast worldwide shipping.

Worldwide

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Premium

Dealer Network

Join NOVASTAR™ global network with exclusive pricing, technical training, and marketing support for business growth.

Exclusive Benefits

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Frequently Asked Questions

Everything You Need to Know About NOVASTAR™ Gypsum Retarder

What is NOVASTAR™ Gypsum Retarder used for?

NOVASTAR™ Gypsum Retarder is a protein-based additive designed to control and extend the setting time of gypsum-based materials such as plaster, wall putty, self-leveling compounds, and gypsum boards.

This specialized retarder ensures sufficient working time for mixing and finishing without compromising final product strength, making it an essential component for professional construction and manufacturing applications.

                                Perfect for: Plaster applications, wall putty formulations, self-leveling compounds, and gypsum board manufacturing where extended working time is crucial.
                            

How much NOVASTAR™ Gypsum Retarder should be added?

The recommended dosage is typically 0.05%–0.3% of the total gypsum weight, depending on the formulation, temperature, and specific application requirements.

Dosage Guidelines:

0.05% - 0.1%

Light retardation for standard conditions

0.1% - 0.2%

Moderate retardation for extended working time

0.2% - 0.3%

Maximum retardation for challenging conditions

                                Professional Recommendation: For exact dosage optimization, we advise conducting a small lab trial or consulting the LANDU technical team for tailored guidance specific to your formulation.
                            

Will the use of NOVASTAR™ Gypsum Retarder affect the final strength of gypsum products?

No. Unlike organic acid-based retarders, NOVASTAR™ maintains the mechanical strength and durability of the final gypsum product.

Our protein-based formulation effectively delays setting time without causing softening or structural weakness, ensuring your final products meet all performance specifications.

Strength Preservation Comparison:

Organic Acid-Based Retarders

May cause softening and reduce final strength

NOVASTAR™ Protein-Based

Maintains full mechanical strength and durability

                                This means you get extended working time without any compromise on the structural integrity or performance of your finished gypsum products.
                            

Can NOVASTAR™ Gypsum Retarder be used together with other admixtures?

Yes. NOVASTAR™ Gypsum Retarder demonstrates excellent compatibility with most gypsum additives, making it highly versatile for complex formulations.

Compatible with:

PCE-based Superplasticizers

Works seamlessly with polycarboxylate ether superplasticizers

Accelerators

Can be combined with setting accelerators for fine-tuned control

Performance Modifiers

Compatible with various strength enhancers and workability improvers

                                Best Practice: Compatibility testing is recommended when introducing new formulations or additives to ensure optimal performance in your specific application.
                            

Still Have Questions?

Our technical team is ready to help you find the perfect solution for your gypsum formulation needs.

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