Gypsum Plaster

Made from hemihydrate calcium sulfate (CaSO₄·½H₂O, or calcined gypsum) with functional additives, this plaster provides a smooth, even base for walls and ceilings. It offers improved workability, fire resistance, thermal insulation, and natural humidity regulation. Professional installation ensures a durable, high-quality finish free of cracks or defects.

Inquiry Now

Gypsum Plaster Products from SUNBO

Retarder for Gypsum Plaster

Gypsum (hemihydrate calcium sulfate) sets too fast for practical application. The retarder adsorbs onto gypsum particle surfaces, slowing crystal nucleation and growth, effectively extending working time up to 1–2 hours. This provides workers with sufficient time for large-area application.

Gypsum Plaster Retarder Selection

Choosing the right retarder depends on gypsum type and construction needs.

SG-52 is ideal for high performance with low-dose mixing.

SG-12P is precise dosage control.

SG-12X is preferred for high surface strength.

Why Choose SUNBO as Gypsum Plaster Additives Supplier?

High-Performance Products, Consistent Quality

SUNBO gypsum retarders regulate crystal formation to achieve stable setting behavior, providing longer working time while maintaining high final strength. This ensures consistent, smooth, and high-quality plaster finishes.

Compliance with international standards: EN 13279-1/2, and also ASTM C587/C472.

Gypsum plaster is suitable professional installation, including substrate preparation, proper water-binder ratio, mixing, timing, and finishing technique. Otherwise, it will lead to cracks, detachment, or uneven surfaces. SUNBO additives ensures reliable performance and results.

SUNBO – Success from Source, Quality at Every Step

At SUNBO, we build reliability and quality into every product—from PCE and gypsum retarders to SMF, defoamers, and stabilizers. With ISO 9001 and EU REACH certifications, we don’t just meet industry standards—we surpass them. Every batch delivers the highest level of performance and dependability our customers expect.

Advanced R&D Innovations and Technical Team

Your needs are our priority. Supported by two modern laboratories, SUNBO offers customized solutions, expert technical guidance and continuous product innovation. Whether it’s fine-tuning performance for your application or developing entirely new formulations, we deliver the profession and innovation that keep your business ahead.

Delivery Guarantee – When You Need It.

We know that time is of the essence. SUNBO guarantees fast, dependable shipping for orders of any scale. Backed by an annual capacity of 100,000 tons and extensive warehousing, we have the infrastructure to fulfill even the largest requirements without delay.

< Repair Mortar

> Gypsum-Based Self-Leveling Compound

Try It Now!

Stay Connected with SUNBO

Navigation

Products

+86 137 7191 2518

weiya.qi@szsunbo.com

Xinhua Industrial Park, Wangting Town, Xiangcheng Dist, Suzhou City, Jiangsu, China.