How is Gypsum Plaster Made?
How is Gypsum Plaster Made?
Gypsum plaster is an environmentally friendly alternative to traditional sand cement application for interior plaster surfaces. Gypsum plaster is a faster application method for interior surfaces because it does not require time-consuming water curing. Water curing is mandatory for 20 - 21 days after sand cement plastering to reduce shrinkage cracks due to heat of hydration. Gypsum plaster has been used in construction for centuries and is a time-tested process for plastering interior walls. Gypsum plaster provides excellent thermal and acoustic properties while providing a superior rich and smooth surface. Gypsum plaster is mixed on site with clean water at the recommended ratio to make a consistent slurry. Gypsumva slurry is then applied to walls and ceilings by trained applicators. thick, this process is called Gypsum plaster.
Gypsum is chemically called Calcium Sulphate dihydrate (CaSO4 2H20). There are three types of gypsum found in the world. Naturally, gypsum, like other minerals, is found below the earth's surface, and this gypsum is also called Natural Gypsum. Natural gypsum is extracted below the earth's surface using conventional tools. Gypsum is also formed as a byproduct of the salt production process. Third, gypsum also occurs as a byproduct of industrial manufacturing processes such as fertilizer, copper, and energy. Gypsum formed in this way is called synthetic gypsum and is also called phosphorus gypsum and DSG, depending on the type of manufacturing process. .
How to Apply Gypsum Plaster?
Gypsum Plaster can be applied directly to brick walls, concrete blocks or drywall surfaces.
- Gypsum Plasters usually come in premix sachets. Extract the powder in a dry container and mix it with water. The mixture should be mixed for 2-3 minutes
- Check the plaster thickness that should be applied to the wall. It should not be more than 13 mm
- Gypsum plaster apply firm pressure to a solid surface.
- The plaster flattens as it hardens. When the plaster is hard enough, clean the surface with sponge and water as needed
- Gradually trowel the surface to obtain a smooth matte surface
- The coating surface should be protected from constant exposure to moisture.
- Prolonged or repeated exposure to moisture can cause loss of strength and/or adhesion.
- Painting work should only be started after the surface is completely dry.
Recommended Gypsum Plaster Thickness:
- Gypsum plasterr can be applied from 6 mm to 20 mm thickness.
- We recommend a minimum of 6 mm gypsum plaster thickness to prevent cracks and mold growth.
- If plastering more than 20mm thick is required for a wall, you should first go with a 8-12mm thick line coat of cement and sand plaster and then For the remaining thickness we recommend finishing with gypsum plaster (not less than 6 mm).
Recommended Topcoat for Gypsum Plaster:
- Gypsum plaster, must be finished in a good smoothness before painting. The surface is usually sanded (not sandpapered) to give a smoother finish.
- All horizontal lines and surfaces should be tested at one level.
- All corners should be checked if they are properly completed and at right angles
How to Apply Gypsum Plaster Properly to Walls
Gypsum plaster is most widely used in interior wall plasters and replaces traditional cement mortar plasters. Although gypsum plaster is easy to apply and requires less experienced manpower compared to traditional cement mortar, preparing the wall surface properly and no cracks, peeling etc. It is important to apply a proper gypsum to ensure it. The procedure to properly apply gypsum plaster on the wall is in detail.
Gypsum Plaster Technical Specifications:
Finished surface color: white
Time Setting: 25-30 Minutes
Coverage (considering 12mm thickness): 21 m² per 25 Kg Bag
Compressive Strength: 60-70 kg / cm2
Shelf life: 4 months
Package Size: 25 Kg Bag