The wall cladding, which is made of cotton fibers, can have a "healing" function in the event of slight mold growth on walls and ceilings. Like other textile fabrics, cotton plaster reacts by absorbing moisture and releasing it through evaporation. Air circulation and dry phases are required for this.
Plaster breathes in and out
Even if problems with moisture can arise with cotton plaster, this affects the durability rather than the development of mold. If the humidity in a room, in the masonry and in terms of splash water is within the normal range, the textile plaster acts as a brake against mold.
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Similar to a mineral plaster inside, it intervenes in the moisture regulation of the room through diffusion. The advantages of clay plaster, which also binds moisture and releases it again more slowly, are exceeded by the speed of the process with cotton plaster. However, its faster binding and release of water requires a few conditions:
- Air exchange and circulation must transport the "exhaled " moisture away
- The supply of moisture must take "breaks"
- Constant soaking leads to mold stains and mold
It serves as an interior plaster against mold in the case of conventional everyday stress such as occasional cooking and cooking in a kitchen, operating a tumble dryer and showering in a bathroom.
Limits are given by the degree of saturation. In a damp room such as a laundry room or a frequently used bathroom, the cotton plaster absolutely needs the "exhalation phases". In terms of time, they are about five to ten times the moisture absorption. After a long, long, hot shower of ten minutes, it takes fifty minutes to an hour and forty minutes of air exchange, drying, and evaporation.
Saturation limit limits effectiveness
Cotton plaster is not suitable as renovation plaster. If moisture builds up in the masonry, the textile plaster does not have sufficient time to release the moisture it has absorbed. If mold stains are discovered when cleaning cotton plaster, this is the disproportion. When it is cold, the "activity" of the plaster is reduced.Tips & Tricks You can also influence the regulating and mold-preventing properties during processing. The volume of absorbent water increases with the thickness of the plaster. The "relaxes " the sequence of time periods that must lie between "inhaling and exhaling ".