01/06/2026
We’re often asked how EPS responds to flame, so we filmed a quick demo using a small Formance SIP sample.
We exposed the sample to a lighter flame for 5 seconds.
What happened?
The flame didn’t continue. The EPS shrank back from the heat source and went out quickly.
This is consistent with how Formance describes the EPS used in their panels: it contains a flame retardant, is designed not to propagate fire, and pulls back from the heat source.
It’s important to remember that fire performance in a finished home depends on the full building system, including the SIP assembly, linings, detailing, installation and compliance requirements.
But as a simple visual demonstration, this is a useful way to show how the material behaves when exposed to a small flame.