UK Next Working Day Service When You Order Before 1pm. (Excluding Northern Ireland)

Jesmonite® AC830


Size: Liquid 5kg
Sale price


Notice: All AC830 Products are available by special request only unless this product page displays otherwise. We can get this product in fairly quickly so if you're looking to order, please contact us!


Jesmonite AC830 is a rapid-setting acrylic-modified cementitious composite. The material is designed to be used for all cast stone and wet cast applications and is supplied with a separate plasticiser to aid flow, reduce shrinkage and cracking during curing, and enhance final strengths and thus ultimate durability.

Mix Ratios

For fine decorative castings, weigh the Liquids and Base into separate clean containers at the following ratios:

Jesmonite AC830 Liquids - 1 part by weight
Jesmonite AC830 Base - 7 parts by weight
Jesmonite Super Plasticiser - 8-12g/kg of mix

The working time (pot life) for AC830 is around 20-30 minutes (temperature-dependent) before it becomes unworkable and begins to set. Jesmonite AC830 achieves over 90% of its ultimate strength in the first 24 hours. Cast objects should be kept in a warm, dry environment during this period.

Products Benefits

  • Excellent fine detail retrieval
  • Impact, abrasion and frost resistant
  • Self-levelling technology
  • Very low porosity
  • Non-combustible


  • Very high durability in all conditions of external weathering including water features, statuary, cast stone decorative building elements etc.
  • Can be custom-matched to a wide range of bespoke building colours using the appropriate UV-stable oxide pigments.
  • Self-levelling technology negates the need for vibration equipment for air-free castings, simply brush the material onto the mould and pour.
  • Compatible with a wide range of fibre reinforcements such as PVA Fibres, Alkali Resistant Quadaxial Glass and Polypropylene Fibres to enhance durability.
  • Base - 6-month shelf life
  • Liquid - 12-month shelf life

Payment & Security

American Express Apple Pay Diners Club Discover Google Pay Maestro Mastercard Shop Pay Union Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Recently viewed