Gypsum-Based Compounds and Crack Fillers
Cellulose ethers are multifunctional additives for ready-mixes and dry-mix products. The water retention properties of cellulose additives increase open time and impart workability, lubricity, shrink and crack resistance, void reduction, and adhesion. In dry mix systems, Joinway products ensure fast hydration for reliable performance.
1) Easy Mixing
In both ready-mix and dry-mix products, cellulose ethers enhance the lubricity of the dispersed particles for a smooth, homogeneous crack filler. Delayed soluble Grades of Joinway cellulose ethers are available with delayed solubility for better performance where cold water dispersibility is needed.
2) Improved Workability and Productivity
Cellulose ethers greatly improve water retention, significantly extending the working time and allowing larger batches to be mixed and applied. Longer water retention allows gypsum in the mix to fully hydrate and develop high mechanical strength; the improved plasticity gives a smooth "feel" that users appreciate.
3) Enhanced Final Properties
Materials that contain cellulose ethers resist shrinkage and crack formation and dry with a homogenous surface. Cellulose additives enhance adhesive properties for greater resistance to sagging. And because all grades of Joinway cellulose are white powders, they help maintain desired product color.

• Gypsum-based jointing compounds
• Gypsum-based levelling compounds