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Gypsum Retarder for Gypsum Plaster

Tenessy Gypsum Retarder for Gypsum Plaster

Gypsum Retarder is a high-performance additive specially designed to control the setting time of gypsum-based materials, including gypsum plaster, gypsum board, and gypsum-based cement. By slowing down the hydration process of gypsum, it ensures smoother application, consistent workability, and improved finishing quality.

In gypsum plaster applications, a proper setting time is crucial for achieving a fine, even surface. Tenessy Gypsum Retarder provides the ideal balance—delaying the setting just enough to allow for easy mixing and spreading, without compromising strength or final hardness.

Gypsum Retarder

How Does Gypsum Retarder Work in Gypsum Plaster?

Hand of worker using gypsum plaster coating plaster walls construction

Gypsum Retarder works by interacting with the calcium sulfate hemihydrate during the hydration process,
temporarily slowing the formation of dihydrate crystals. This controlled delay allows applicators more time for:

  • Mixing and leveling the plaster evenly across surfaces.
  • Adjusting and reshaping without premature stiffening.
  • Reducing waste caused by early setting or false hardening.

By providing a stable and predictable setting time, the retarder helps achieve smoother surfaces,
better adhesion, and higher product consistency.

Benefits of Using HPS in Gypsum Plaster

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Gypsum Retarder Usage Instructions

worker plastering gypsum board wall.
  1. Add and Mix Evenly
    Mix the recommended amount of gypsum retarder evenly with gypsum powder,
    or dissolve it in water before adding the gypsum.
  2. Adjust Based on Material
    Because gypsum quality and reactivity vary by source, conduct a small trial
    to determine the optimal dosage for your formulation.
  3. Custom Formulation Available
    Tenessy offers customized retarder grades tailored to your local gypsum material
    to achieve the most effective setting control and performance.

More Solutions and Applications

TENESSY™ Gypsum Retarder provides precise control over the setting time of gypsum-based materials. It enhances workability, prevents premature hardening, and ensures smooth, consistent performance in gypsum plaster, wall putty, boards, and prefabricated parts.

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Powder Defoamer for Self Leveling

worker plastering gypsum board wall.

HPS for Gypsum Plaster

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HEMC for Drymix Mortar

Partner with TENESSY — Your Trusted Gypsum Retarder Manufacturer

Why Choose TENSESSY™ Gypsum Retarder

  • Reliable Performance: Consistent quality control ensures predictable setting behavior.
  • Technical Support: Expert guidance on dosage adjustment and formulation optimization.
  • Flexible Supply: Available for both small-scale and industrial applications.
  • Customizable Formulas: Adapted to local gypsum conditions and product requirements.
  • Environmentally Friendly: Free from harmful substances, safe for workers and users.
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Request a Free Sample

Tenessy provides free samples of Gypsum Retarder for testing and formulation development. Contact our sales team to request your sample and discover how Tenessy can help you achieve consistent, high-quality gypsum plaster performance.

Packaging & Storage

- Packaging: 25kg moisture-proof paper or woven bags. - Storage: Keep in a cool, dry, and well-ventilated area away from direct sunlight. - Shelf Life: 12 months in original, unopened packaging.

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Frequently Asked Questions

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