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Lime Plaster

Throughout centuries lime plaster has proved itself in all climates – Moroccan desert, Venetian canals, Japanese forests and Scandinavian winters. Lime plaster is a durable finish that is timeless, elegant and creates a healthy living environment. Lime is alkaline and inhibits the growth of bacteria or fungi, and is also able to regulate moisture and humidity. Natural sands and limestones create different colours and natural earth pigments can be added for stronger colours.

Clay Plaster

Clay is the oldest form of plaster and has the lowest environmental impact as no processing is required. Clay is so simple yet unmatched by any other material for its benefits to the wall structure and inhabitants. Clay plaster regulates humidity better than anything else, is suitable for allergy sufferers, prevents electromagnetic radiation and neutralises odours. It is 100% natural and endlessly recyclable with many soft and natural colours available.

Clay vs Lime

Clay and lime plaster are in general both similar products that are made with either clay or lime as the binder, and a mix of various sands, earths and crushed stones as the aggregate which forms the bulk of the mixture.

Types of finish

A huge range of finishes are available with both clay and lime and it depends on a variety on factors such as the size of the sands/aggregates, the thickness of the plaster, and the tools/methods used to finish the plaster. Smooth or even polished finishes are possible with highly flexible trowels, lightly textured sandy finishes are achieved with a fine sponge, and rough and random textures are created with wooden floats.

Wall substrates

Lime and clay plasters can be applied to most wall substrates, including modern materials such as plasterboard (e.g. GIB board), concrete, cement board, brick etc. They can also be applied to OSB and plywood but various techniques are required to get the plaster to grip onto these walls during application, and if possible it is advantageous to consider alternative substrate materials that are more complimentary to lime and clay plaster. Lime and clay prefer a porous, absorbent and slightly rough surface such as earth, concrete, brick, woodfibre, hempcrete, straw, bamboo matting etc.