What is Jesmonite?
Jesmonite material solutions are safe (non-solvent, VOC free and fire-rated) alternatives to solvent based products such as fiber glass and polyester resin. They are also lightweight alternatives to cast concrete and traditional stone. Jesmonite is the ultimate chameleon material of the building industry. It can be used to replicate the appearance and texture of any surface finish in any number of colours. Jesmonite products fall into two main categories: Acrylic Modified Gypsum Composites and Acrylic Modified Cementitious Composites.
Jesmonite is made up of a liquid eco-resin compound that binds a gypsum powder. The resulting mixture acts much like plaster for 24 hours or so then hardens to acrylic like properties.
Jesmonite is ideal for covering large foam sculptures by itself or, to add extra strength, along with our Quadaxial Fabric.
Due to Jesmonite being a water-based compound, all of the usual protective equipment necessary when working with G.P resin and fiber glass is not required. Although a mask and goggles are a good idea when mixing any powder or liquid.
Coating polystyrene sculptures or foam core designs with Jesmonite will result in a durable, exterior shell, which can then be sanded or painted dependent on requirements.
Jesmonite is very strong, weatherproof and highly durable. It is also non-combustible with EN13501-1 (British Certification) & AS1530.1 (Australian certification).
Jesmonite is ideal when making large structures, particularly when used with polystyrene as a core due to it being lightweight when compared to alternatives. This keeps the weight to a minimum whilst not compromising on structural integrity.
It's also suitable for making children’s toys and interactive sculptures where conventional resin and fiber glass usage would be unsuitable.
Jesmonite is also easier and less harmful to sand and finish making it quicker and safer to achieve a professional looking surface.