Stop Grout Cracking & Efflorescence: Adjust the HPMC/RDP Ratio
Cementitious grout may seem like a secondary material, but it plays a critical role in the final look and long‑term durability of tiled surfaces. Yet cracking and efflorescence often appear one after another, becoming persistent quality headaches. Many manufacturers try to solve the problem by simply adding more cellulose ether for water retention, or just
