Dry Mortar Additive HPMC for Interior Wall Putty

HPMC, or Hydroxypropyl Methyl Cellulose, is a common additive used in dry mortar mixes, including interior wall putty. It’s a non-ionic cellulose ether, a type of modified cellulose derived from wood pulp or cotton.

HPMC plays a vital role in enhancing the properties of interior wall putty, contributing to a better application and overall finish. Here’s a breakdown of the benefits HPMC offers:

  • Improved Workability: HPMC acts as a thickening agent, increasing the viscosity of the putty mix. This translates to a smoother, more manageable paste that’s easier to spread and apply on walls.

  • Enhanced Water Retention: HPMC helps the putty retain moisture, preventing it from drying out too quickly. This is crucial for ensuring proper curing and reducing the risk of cracks.

  • Reduced Cracking: By minimizing moisture loss, HPMC helps prevent shrinkage and cracking in the putty after application. This leads to a more durable and long-lasting finish for your interior walls.

  • Smoother Finish: The thickening and water retention properties of HPMC contribute to a smoother application, allowing for a more even and leveled finish on your walls.

  • Extended Open Time: HPMC extends the working time of the putty mix, giving you more time to apply it before it starts to set. This is particularly beneficial for larger areas or for those who may not be as experienced in applying putty.


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