Introduction Hydroxypropyl Methylcellulose (HPMC) and Methyl Hydroxyethyl Cellulose (MHEC) are widely used cellulose ethers in construction materials such as wall putty, Cement Render&Plaster, tile adhesives, and EIFS/ETICS. Both are non-ionic, water-soluble polymers, but their chemical structures and functional properties make them suitable for different applications. Understanding the differences between HPMC and MHEC is essential for […]