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30 June 2025

What is the difference between polymeric gypsum and ceramic gypsum?

Polymer and ceramic gypsum

Table of contents:

Both polymer gypsum and ceramic gypsum are popular materials in the world of DIY, casting and art projects. While they may look similar at first glance, they have significantly different properties, purpose and applicability. In this article, we compare the two types of gypsum to help you choose the best solution for your project.

Polymeric gypsum - an innovative material for special tasks

Polymeric gypsum, e.g. Lumrix or A-STONE from the e-cupstone.co.uk range, is a two-component material based on mineral powder and acrylic resin. It is characterised by:

high mechanical strength (damage-resistant),

  • perfect reproduction of details,
  • smooth surface after curing,
  • weather resistance and UV radiation,
  • possibility of creating usable elementssuch as vases or candle holders,
  • moulding flexibility even complex shapes,
  • possibility of colouring and acrylic paint finishes.

Advantages of Lumrix and A-STONE gypsum

  • Resistant to cracking and crumbling,
  • Ideal for artistic and decorative forms,
  • Creating terrazzo / terrazzo structures,
  • Safe, environmentally friendly, water-based,
  • Perfect for modern designs and interior decoration.

Ceramic gypsum - a classic for simpler projects

Ceramic gypsum is popular in:

  • modelling,
  • stucco,
  • mould and die casting production.

Features:

  • good ability to reproduce shapes,
  • the smoothness of the surface after curing,
  • brittleness and susceptibility to fracture,
  • less resistant to mechanical damage,
  • limited possibilities with utility projects.

Polymeric gypsum vs. ceramic gypsum - a comparison

FeaturePolymeric gypsumCeramic gypsum
Mechanical strengthHighLow
Water and UV resistanceYesNot
Surface smoothnessVery highHigh
Forming flexibilityHighLimited
Utility useYes (dishes, decorations)Rather not
Casting durabilityYearsDelicate and crisp

Which plaster to choose for a DIY project?

If you care about:

  • durable and aesthetically pleasing castings,
  • modern decorative designs,
  • resistant to damage and weather conditions,
  • working with details and dyes,

choose polymer gypsum for casting from e-cupstone.co.uk.

For simple modelling moulds and stucco, ceramic gypsum can be used, but its limitations make it not a versatile material.

Summary

Polymeric gypsum, such as Lumrix or A-STONE, provides almost unlimited possibilities for creating durable, smooth and aesthetically pleasing castings. It is resilient, versatile and ideal for DIY projects. Ceramic gypsum is the solution for simpler, less demanding moulds.


Invest in quality and durability with e-cupstone.co.uk! Discover the benefits of polymer plaster and create casts that impress with their detail and durability.

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Author: Ecupstone
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