Skim coating is a popular method of achieving a smooth, even surface on walls and ceilings. The technique involves applying a thin layer of mortar or stucco to a rough or uneven surface to create a level base for paint or wallpaper. HPMC or hydroxypropyl methylcellulose is a commonly used thickener for thin layer mixtures. Let’s take a closer look at the advantages of HPMC in thin layers.
First, HPMC is an excellent thickener for putty because it is water soluble and easy to mix. Unlike other thickeners such as tapioca starch or wheat flour, HPMC dissolves completely in water, making it easier to achieve a consistent texture in skim coating mixes. In addition, HPMC has excellent adhesion, which helps the putty adhere to the substrate and prevents cracking.
Another significant benefit of using HPMC in putty coating mixtures is its ability to improve processability and flow. Because HPMC gradually thickens the mixture, it gives the plasterer more time to work on layers of putty before it sets. In turn, this allows for a smoother, more even application. In addition, HPMC enhances the leveling properties of the putty, allowing it to self-level and fill small imperfections in the substrate.
HPMC is also an environmentally friendly option for thin layer formulations. As a cellulose product, it is biodegradable and non-toxic. This means that HPMC does not have any harmful effects on the environment or human health. Additionally, HPMC improves sustainability by reducing waste and avoiding excessive repair or replacement.
Finally, HPMC is cost-effective and widely available. It is mass-produced and sold in the global market, making it accessible to both manufacturers and end-users. HPMC also has a long shelf life, which means it can be stored for a long time without losing its quality or efficacy.
In conclusion, HPMC is an excellent thickener for putty coating mixtures. It offers a wide range of benefits including improved processability, flow, leveling and adhesion. In addition, it is environmentally friendly, cost-effective and has a wide range of applications. As such, HPMC is a popular choice for both novice and experienced plasterers looking to achieve a smooth, even surface on walls and ceilings.
Post time: Jul-11-2023