The plaster is then mixed with water, stirred and poured into molds to form gypsum blocks with standard formats, either solid, or with round or square open cores to reduce weight and conserve materials.
Each block is moulded with tongue and groove at all sides, to enable quick and easy assembly.
The dried gypsum blocks are packaged at the production plant and then transported to warehouses or construction sites.
For wet areas like domestic kitchens, bathrooms and cellars water-repellent hydro blocks (mostly with a bluish colour) are available, both in medium and high gross density.
Similar to masonry, walls built with gypsum blocks are massive, void-free and of high stability.
Due to the construction technique they are stable solid walls with a high resistance to mechanical strain, which reduces maintenance and repair.
In Europe gypsum blocks are still widely used and are gaining popularity as a building material with very low emissions of volatile organic compounds, extremely low radiation values and a neutral pH value that contribute to a healthy living environment.