Frequently Asked Questions About Jesmonite

What is Jesmonite?
Jesmonite is a composite material that combines an acrylic resin with a mineral powder.

How is Jesmonite used?
Jesmonite is used to create a variety of products, from decorative items and furniture to architectural elements and restoration projects. It is typically applied by casting into molds or by manual application.

What are the differences between Jesmonite AC100 and AC730?
Jesmonite AC100 is gypsum-based and is ideal for indoor use, providing light protection against moisture. Jesmonite AC730 is acrylic resin and cement-based, offering greater durability and making it suitable for outdoor use, providing complete protection against water.

How is sealer applied to Jesmonite?
The sealer is applied to the dry, clean surface of the Jesmonite product, either by spraying or by applying with a brush, sponge, or cloth. It is important to follow the manufacturer’s specific instructions to ensure even coverage and proper adhesion.

What is the drying time for Jesmonite?
Drying time can vary depending on the type of Jesmonite used. For example, AC100 dries in approximately 20 minutes in the mold, while AC730 requires about 4 hours. It is important to adhere to these time intervals to avoid issues with material setting.

Is Jesmonite water-resistant?
Jesmonite AC100 can be treated to be water-repellent but is not completely waterproof. Jesmonite AC730, on the other hand, can be made fully waterproof, making it suitable for outdoor applications and environments with high moisture levels.

Which sealer should I use for Jesmonite?
The choice of sealer depends on the type of Jesmonite and the desired application. For AC100, you can use acrylic sealers with either a gloss or satin finish. For AC730, you have the option to use Flexiguard Sealer, which forms a protective film, or Penetrating Sealer, which penetrates deeply into the material.

Can Jesmonite be used for outdoor projects?
Yes, Jesmonite AC730 is suitable for outdoor projects due to its ability to become fully waterproof and withstand varying weather conditions. AC100 is better for indoor use or projects with limited moisture exposure.

Is Jesmonite eco-friendly?
Jesmonite is considered eco-friendly because it uses non-toxic components and does not emit harmful vapors during application. It is a popular choice for projects that emphasize sustainability and safety.

How do I maintain a Jesmonite product?
Jesmonite products should be cleaned with a mild solution of water and soap. Avoid using harsh or abrasive cleaning products that can damage the surface. For additional protection, regular application of a sealer is recommended.