What is the heat resistance of Buddy Rhodes Vertical Mix? Can I use Vertical Mix to create a fire pit or fireplace?

Article courtesy of Smooth-On, Inc.

What is the heat resistance of Buddy Rhodes Vertical Mix? Can I use Vertical Mix to create a fire pit or fireplace?

Fully cured, Buddy Rhodes Vertical Mix has a useful temperature range of -40°F/-40°C to 200°F/93°C. Vertical Mix has excellent freeze/thaw resistance. Applying a sealer is recommended to further reduce water penetration and enhance durability in freeze/thaw environments.

Although Vertical Mix is flame rated, certified to E-84/Class A, the rules for heat resistance are generally the same as other Portland Cement based concrete materials.

If the concrete is rapidly exposed to heat above 93°C/200°F, the moisture trapped in the concrete may quickly expand and crack or spall the surface.

We do not recommend Vertical Mix for direct flame contact for extended periods for this reason.

Disclaimer

This FAQ article is offered as a guideline and offers possible solutions to problems encountered during mold making and casting. No warranty is implied and it is up to the end user to determine suitability for any specific application. Always refer to the provided Technical Bulletins (TB) & Safety Data Sheets (SDS) before using any material. A small scale test is suggested to determine suitability of any recommendation before trying on a larger scale for any application.

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