KEEMIYA MATERIALS

Gypsum Retarder

Gypsum Retarder

Manufacturer: CemotechBrand: Gypstar

More working time. More precise application.

Gypsum retarders adjust the setting time of gypsum-based systems. Type and dosage must suit gypsum reactivity, working temperature and required application time. One fixed dosage will not produce the same result with every gypsum source.

Packaging of Gypsum Retarder; Keemiya product image
Product illustration · Packaging may vary by grade

Adjust setting time

Extend workability

Support continuous application

Conceptual application image of Gypsum Retarder in industry
Conceptual industrial application image

APPLICATIONS

Where is it used?

  • Hand- and machine-applied plaster
  • Gypsum putties and joint fillers
  • Gypsum components and blocks

Match the intended use to the grade, process conditions and technical documentation.

GRADE SELECTION

Choose a grade for your process.

Use these criteria to start a technical discussion. Numerical specifications and dosage must come from the grade documentation and application trials.

Request TDS, SDS & analysis →
Gypsum type
Record the source, purity and reactivity of the gypsum.
Working time
Test initial and final setting at the actual application temperature.
Final properties
Assess strength and surface quality after adjusting setting time.
MANUFACTURER

Cemotech

Name: Cemotech is listed on the basis of Keemiya’s product information and related sources. Brand, grade and shipment origin are confirmed during enquiry.

Manufacturer profile ↗

Before you select

Does a higher dosage always improve the result?

No. Establish dosage through testing. Excessive retardation can affect the application schedule and final properties.

What information is needed for a grade recommendation?

Share the application, formulation type, process conditions, target performance and required quantity so we can review the grade and documentation.

Product and manufacturer sources

Sources reviewed: 25 October 2026. This overview does not replace the grade’s technical specifications.