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Joint Filler

Joint filler is mainly composed of building gypsum and performance-enhancing additives. The gypsum serves as the base material in caulking gypsum, providing essential properties such as strong bonding strength and excellent crack resistance.

To improve performance, additives like gypsum retarders and cellulose ethers (HPMC for joint filler) are used to adjust setting time, enhance workability, and reduce the risk of cracking. Additionally, redispersible polymer powder (RDP) and modified starch are often included to boost bonding strength, increase flexibility, and further enhance the crack resistance of the filler.

These components work together to ensure the joint filler delivers smooth application, durability, and a high-quality finish for gypsum board joints in interior construction.

Product Features and Advantages

3. Prestar® Pregelatinized Starch in Joint Filler – Boosting Internal Cohesion

Prestar® pregelatinized starch enhances the internal cohesion and adhesion strength of joint fillers. With recommended grades like Prestar®1027 and Prestar®1105, it helps improve paste stability and application performance, especially in gypsum-based systems, ensuring a strong and uniform surface finish.

Key Benefits:

Increased internal strength
Improved consistency
Enhanced bonding on gypsum surfaces

4. Aquago® Water Repellent – Long-Lasting Moisture Protection

Aquago® water repellent additives are designed to protect joint fillers used on exterior walls from moisture penetration. Formulations with Aquago®WP200 and Aquago®WP200H significantly reduce water absorption, enhancing the weather resistance and extending the life of the finished surface.

Key Benefits:

Effective water repellency
Improved durability in outdoor applications
Protection against efflorescence and mold growth

Recommended Products

Product	Grade	Recommend application	Character
Cellulose ether	Celopro® MK6M	Common	Very low viscosity
	Celopro® ME20M	Common	Low viscosity
	Celopro® ME50M	Common	Medium viscosity
RDP	Vinabond® N515	Common	Neutral (Vac/E)
	Vinabond® H518	Tile grout	Flexible (Vac/E)
	Vinabond® H878	Tile grout	Flexible(S/A)
Pregelatinized starch	Prestar® 1027	Joint gypsum	Based on corn
Pregelatinized starch	Prestar® 1105	Joint gypsum	Based on cassava
Starch ether	Stargel® ST300	Common	HPS
Starch ether	Stargel® ST600	Common	HPS
Repellent agent	Aguago® WP200	Common	Silicone based
Repellent agent	Aguago® WP200H	Common	Silicone based
Early strength agent	Quickset® S98	Common	Calcium formate

Product	Character	Grade	Tile grout	Joint gypsum
Cellulose ether	Very low viscosity	Celopro® MK6M	●●●
	Low viscosity	Celopro® ME20M	●●	●●
	Medium viscosity	Celopro® ME50M	●	●●●
RDP	Neutral (Vac/E)	Vinabond® N515	●●
	Flexible (Vac/E)	Vinabond® H518	●●●
	Flexible(S/A)	Vinabond® H878	●●●
Pregelatinized starch	Based on corn	Prestar® 1027		●●
Pregelatinized starch	Based on cassava	Prestar® 1105		●●●
Starch ether	HPS	Stargel® ST300		●●●
Starch ether	HPS	Stargel® ST600		●●●
Early strength agent	Calcium formate	Quickset® S98	●●
Repellent agent	Silicone based	Aguago® WP200	●●●
Repellent agent	Silicone based	Aguago® WP200H	●●●

Our Service

“Expert Lab Support for Cellulose Solutions”

At Celotech, we pride ourselves on providing excellent technical support for laboratory applications, especially in the field of cellulose ethers and construction chemical additives. Our state-of-the-art laboratories are equipped with a variety of specialized instruments for testing indicators such as viscosity and ash, allowing for accurate and reliable testing. Especially for applications in the field of construction chemicals, we provide comprehensive solutions to meet our customers’ needs.

We are committed to the accuracy of experimental data and have accumulated a wealth of product knowledge in the coatings and detergents industry to ensure that our products always provide excellent performance in actual applications.

“Celotech: Efficient Global Shipping”

Celotech is committed to providing one-stop logistics and export services for cellulose ethers and RDP and other chemical additives products. We ensure smooth coordination of export, air and ocean freight processes, ensuring that our products are delivered efficiently and on time to customers around the world.

With a complete supply chain, we handle all aspects of documentation, regulatory compliance and transportation logistics. Our expertise in production planning and international logistics and charter booking ensures the safe and timely transportation of large shipments, allowing customers to focus on their projects with confidence, knowing that their orders will arrive on schedule.

“Experience the Celotech Difference”

At Celotech, we understand the value of trust and collaboration. That’s why we offer complimentary samples of our premium cellulose ethers, allowing you to “try before you buy.” This initiative reflects our unwavering confidence in the quality and performance of our products.

In the construction industry, every detail matters. We are committed to delivering top-quality cellulose ethers, backed by expert technical support, to help ensure your project’s success. Our free samples aren’t just a product offer—they’re an invitation to discover the Celotech difference firsthand. Let us help you achieve exceptional results with reliability you can count on.

HPMC Selection Guide: Matching Key Properties to Construction Applications

Ready to optimize your dry mix mortar formulations? Contact Celotech – your reliable HPMC manufacturer offering the best HPMC for tile adhesive and HPMC for dry mix mortar.

What are the uses of gypsum?

Gypsum is a versatile and widely used cementitious material with a long history in the construction industry. As one of the three pillars of cementitious materials—alongside lime and cement—gypsum plays a crucial role in modern building materials.

Advantages of HPMC in Building Materials and Tile Adhesives

This article explores the main benefits of using construction grade HPMC in dry-mix mortars and tile adhesives.

What’s the traditional method of pasting tiles? And what are the shortcomings?

With the development of modern construction technique, the use of this traditional mortar is faced with many restrictions. Currently in most industrialized countries, the use technology of thin-layer mortar has replaced the construction method of the thick-layer mortar.

Frequently Asked Questions

What is the difference between tile grouts and joint gypsum?

Tile grouts are mostly used in the gaps between tiles;

Joint gypsum is mostly used in the gaps between gypsum boards.

Joint Filler

Recommended Solutions

1. Celopro® HPMC in Joint Fillers – Delivering Smooth Application and Superior Adhesion

2. Vinabond® RDP in Joint Filler – Reducing Water Uptake and Improving Flexibility

Product Features and Advantages

3. Prestar® Pregelatinized Starch in Joint Filler – Boosting Internal Cohesion

4. Aquago® Water Repellent – Long-Lasting Moisture Protection

Recommended Products

Celopro® MT

Pregelatinized Starch

Redispersible Polymer Powder(RDP)

Our Service

Related Posts

HPMC Selection Guide: Matching Key Properties to Construction Applications

What are the uses of gypsum?

Advantages of HPMC in Building Materials and Tile Adhesives

What’s the traditional method of pasting tiles? And what are the shortcomings?

Frequently Asked Questions

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Joint Filler

Recommended Solutions

1. Celopro® HPMC in Joint Fillers – Delivering Smooth Application and Superior Adhesion

2. Vinabond® RDP in Joint Filler – Reducing Water Uptake and Improving Flexibility

Product Features and Advantages

3. Prestar® Pregelatinized Starch in Joint Filler – Boosting Internal Cohesion

4. Aquago® Water Repellent – Long-Lasting Moisture Protection

Recommended Products

Our Service

Related Posts

Frequently Asked Questions

Next Application

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