How thick is the firewall? Consider the nominal (2' x 6') versus the actual (1.5' x 2.5') size of your material, in this case, a 2x6. The insulation doesn't add to the wall thickness because it is between the studs.

The thickness of a firewall depends on various factors, including the building code requirements, the type of construction, and the fire rating desired. Firewalls are typically made of fire-resistant materials such as concrete, brick, or steel.

Explanation:

A firewall is a structure designed to prevent the spread of fire between compartments or areas. It is an essential component of building safety and is typically made of fire-resistant materials such as concrete, brick, or steel.

The thickness of a firewall depends on various factors, including the building code requirements, the type of construction, and the fire rating desired. Firewalls are designed to withstand the heat and pressure generated by a fire for a specified period, allowing occupants to evacuate safely and preventing the fire from spreading to adjacent areas.

The thickness of a firewall is typically specified in building codes and can vary depending on the specific application and fire rating requirements.

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