In the world of construction and building codes, two terms often come up: thermal barriers and ignition barriers. Understanding the difference between a thermal barrier and an ignition barrier is crucial for ensuring compliance with building regulations. It’s also a necessity in building safe, habitable structures!
What is a Thermal Barrier?
A thermal barrier is a material specifically designed to impede the transfer of heat. In construction, a thermal barrier is installed to protect flammable materials from exposure to high temperatures. When we consider using materials like foam insulation, which can contribute to the spread of fire if not properly protected, this is especially important.
How do Thermal Barriers Work?
Our thermal barrier products work by slowing down the transfer of heat from one side of the barrier to the other. They achieve this through a combination of factors, including high thermal conductivity and heat capacity. By creating a barrier that resists the flow of heat, they buy valuable time in the event of a fire, reducing the risk of rapid fire spread.
Where is a Thermal Barrier Required?
A thermal barrier is required between foam plastics and the interior living space. The performance goal for a thermal barrier is to keep the temperature of the foam plastic below 250 degrees Fahrenheit for at least 15 minutes after being exposed to intense heat or fire.
What is an Ignition Barrier?
While thermal barriers focus on slowing down the transfer of heat, ignition barriers are intended to prevent flames from directly contacting flammable materials. Essentially, they’re a form of fire protection that inhibits the ignition of certain materials. Intumescent paints and coatings like DC360 function as thermal barriers.
How Does an Ignition Barrier Work?
Ignition barriers work by forming a protective layer over flammable materials when exposed to high heat. Intumescent coatings undergo a chemical change that causes them to expand quickly, forming a physical barrier between flame and the material under the coating.
Where are Ignition Barriers Required?
Similar to thermal barriers, building codes specify where ignition barriers are necessary. They’re often required in areas where flammable materials are concealed or in locations where the risk of fire ignition is heightened. This could include spaces such as attics or crawl spaces.
Interested in using fireproof paint or intumescent coatings for your builds? At IFTI, we’re passionate about fire safety and the code-compliant use of DC315, DC360 and other products. Get in touch with us via our online contact form with any questions!