About heat resistant plaster
Plaster is widely used in our houses and apartments and we rarely think about it much – usually we don’ t need to apply different kinds of plaster to the walls and standard one( ie. gypsum plaster )is enough in many cases. There are, however, situations when a standard gypsum plaster will not be a good choice: a very good example is a fireplace or chimney, where the temperature may rise well above 50 Celsius degrees( this is usually considered the maximum temperature for a gypsum plaster to not crack ).
Heat resistant plaster looks practically the same as gypsum one: it is a dry powder which has to be mixed with water in order to form a paste( similar to the sour cream when comes to consistency ).
The function is, however, quite…
The function is, however, quite different: as it was already mentioned, heat resistant plaster is used to coat walls and chimney breasts – basically speaking everywhere, where the temperature of the wall exceeds 50 Celsius degrees. This type of plaster should be used also in case of so-called“ hole in the wall” fires( more commonly known on the market as casette fireplaces )– it is recommended to replace gypsym plaster with high resistant one in the area of about ten feet around the fire opening.