Using clay as Building Material a Natural Choice
Clay is one of the most natural building materials and has very good physical and biological properties. Clay absorbs excess moisture very rapidly from the air and releases it again when needed. Clay stores heat and is able to absorb pollutants. Due to the low equilibrium moisture content, clay has a preservative effect on wood. These positive features and newly developed techniques in clay building technology and materials in recent years have ensured that the interest has grown. Subsequently we want to inform you in this article about more details on building with clay.
Natural renders are becoming increasingly popular. Due to its positive environmental characteristics, clay plaster has a comfortable and healthy indoor environment. It is vapour permeable and acts to regulate heat and moisture balance. It also has a specific heat capacity, so interior rooms stay cool in summer and warm in winter.
Clay plasters are made of coloured clays sand and cellulose fibres and can be coloured to any taste. However, there are manufacturers who offer pigmented clay plasters.
The preferred areas of application are the interior. These may be applied over rammed earth, blocks or clay bricks and clay panels but also on drywall.
Clay plasters are available as dry mixes, and need only be mixed with water and can either be applied with a trowel or sprayed. After a drying up period, it is rubbed with a sponge float to make a smooth surface or even textured with other tools and is available in different grain sizes for finer or courser looks.
Clay plates or panels
Clay is one of the physically and biologically interesting materials. It consists of approximately equal parts of sand, silt and clay and is very widespread. Its ability to heat and especially humidity control can’t be achieved by any other building material. However, for a long time it was far too expensive to process clay in construction. With the development of the clay plate, this has now changed.
Clay plates are available from different manufacturers in different versions. This is reinforced either by a reed mat, straw or wood fibre. In addition, other vegetable or mineral supplements may be included. The boards are not heat treated so that the positive properties of clay are preserved in their entirety.
Clay panels have very good sound insulation properties. They also have a limiting effect on humidity and act as a radiation shield and have ability to absorb odours.
Clay plates are used to create wall and ceiling coverings. The clay plates are mounted on a steel profile or wood frame with screws and supporting washers. The panels can be cut with conventional tools. For easier handling / processing, some suppliers offer panel systems with t&g connections on all sides. The joints must be reinforced with a fibreglass cloth or jute fabric and filled with a clay plaster then painted.