Heat resistant plaster: some information

Typically plasterers use a gypsum plaster in our apartments and houses, but there are areas, where this standard solution will not be enough: every wall that gets warmer than 50 degrees centigrade, should be plastered with a heat resistant plaster – if not, then it is practically sure that a gypsum plater will not stay on such a wall.

Some time ago there was one…

Some time ago there was one material( asbestos )with fantastic heat resistance and in the past it was commonly available, but due to its carcinogenic nature it is forbidden to use in any new constructions and in all older ones it should be replaced with health-friendly materials, such as heat resistant plaster.
Even more importantly, asbestos was also a material that was supposed to be covered with plaster, so from pure pragmatic point of view it is far more beneficial to use just one layer of a heat resistant material. There is only one limit for this type of plaster, however: you should ensure that the layer of a heat resistant plaster is no thicker than 6 milimeters – otherwise you risk that the plaster will not stay on the wall.

Usually heat resistant plaster is used around the fire openings( in such a case it has to be applied in the diameter of about 3 meters from an opening )or to cover chimney breasts, but it can also be useful when you place a woodburner in the corner of a room and want to be sure that the plaster around it won’ t crack.