HPMC for Wall Putty/ Skim Coat

What kind of HPMC is used for wall putty

1. Putty powder generally has a viscosity of 100,000. The most important function of HPMC is water retention, followed by thickening. In the wall putty, as long as it has good water retention and low viscosity (40,000-80,000), it can also be used, and the construction is easy to scrape.
2. HPMC has a higher viscosity and can be used, but it is more laborious than the construction performance. Because calcium carbonate is already very fine and 300 mesh, if HPMC has a high viscosity, the drywall putty will also be very sticky, and the construction will be laborious. Not conducive to batch scraping,
3. High viscosity of HPMC is relatively better for water retention. When the viscosity exceeds 100,000, the viscosity has little effect on water retention.

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