Which materials are best for reflecting heat from a fire?

Choosing the Right Materials

When it comes to reflecting heat from a fire, the materials you choose can make all the difference. White metals such as aluminum and stainless steel are excellent choices because they reflect a high percentage of heat. For example, a 1/4 inch thick aluminum sheet can reflect up to 90% of heat.

Applying Reflective Coatings

Applying a white reflective coating to a metal surface can also increase its reflectivity. A 2-part epoxy coating mixed with 90% titanium dioxide (TiO2) can achieve a reflectivity of around 85%. Apply the coating in a thin layer, about 1/16 inch, and make sure to follow the manufacturer’s instructions.

Other Considerations

When selecting materials for heat reflection, consider the temperature and duration of exposure to heat. For prolonged exposure, a more durable material such as stainless steel may be necessary. Additionally, ensure that the materials you choose are safe for use in a fire environment. Some materials, such as plastic, can melt or release toxic fumes when exposed to high temperatures.