Modern buildings are typically plastered with a gypsum based plastering system. This performs well in modern buildings with cavity walls, constant ventilation and intact, continuous damp proof courses.
Older buildings were plastered with lime based plaster systems. Lime plaster allows the migration of moisture vapour much more readily than gypsum and the wooden lathes used for backing lime plaster are much more resilient than plaster board.
We are experienced in using lime plasters in listed buildings, where listing applies a requirement to use like materials. Lime plaster provides material advantages over gypsum in buildings with solid brick or stone walls. The workability and cohesion of lime plaster also mean it can be used to create unique plaster effects and finishes.
We are experienced in instillation of battens and lathes to solid walls, to act as carriers for lime plaster. Battens and lathes are typically used on walls which have an external face to the outside, to create some air space between plaster and possible damp walls. On internal masonry walls, lime plaster can be applied directly to masonry. Internal stud walls are lathed before plastering. There are modern alternatives to lathes which act as suitable lime plaster carriers (e.g. wood wool board).
For internal partitions, the material advantages of lime plaster i.e. breathabitilty and flexibility are not essential, however listed buildings requirements may stipulate its use. There is also an aesthetic and environmental benefit of lime plaster systems.