Silicone Sealant can be categorized into which type of intumescence?

Silicone sealants are categorized as non-intumescent materials. This means that they do not expand significantly when exposed to high temperatures. Instead, they serve primarily as a barrier or seal to prevent the passage of smoke, heat, and flames during a fire. Non-intumescent materials maintain their structure and integrity under fire conditions but do not expand like intumescent materials, which can provide a greater insulation effect by increasing in volume when heated.

In contrast, fully intumescent materials would swell and provide enhanced fire resistance, while partially intumescent materials would have limited expansion when exposed to heat. The characteristic of silicone sealants being non-intumescent is critical for their use in fire-stopping applications, where they need to effectively seal gaps without relying on intumescent properties to achieve their protective benefits.