Blending Viscosities for Thick Mortar Rheology
Thick-bed leveling mortars often go on in layers several centimeters deep. The requirements are conflicting: no sagging on vertical surfaces, easy pumping, and smooth troweling. A single viscosity grade of cellulose ether simply cannot deliver all three at once. The real solution isn’t a magic universal grade. It’s blending different viscosities. Low vs. High Viscosity:
