Solid wood at least 1 3 8 thick.
Single family residence garage door fire rating.
Code does not require a fire rated door in single family residences.
One example of a problem area is the entry door between the garage and the residence.
Doors between a house and a garage can be one of three types take your pick.
To be clear fire doors are minute and hourly rated assemblies.
Solid or honeycomb core steel at least 1 3 8 thick.
While all of this is intended to create a fire barrier between garage and house it is not specified as one hour rating or fire wall by the residential editon of the florida building code fbc or the international residential code irc.
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This door assembly is not specifically required to be fire rated.
Hot or smoldering objects 18 5.
If you still want to replace the door a fire rated door is only one option to meet the fire separation requirement the garage and residence shall be equipped with solid wood doors not less than 1 3 8 inches in thickness solid or honeycomb core.
When there is a living area habitable space above the garage the ceiling requirement ramps up to 5 8 type x fire rated drywall.
Likely needs a self closure device.
In single family homes a fire rated door or fire rated frame assemblies are not a requirement thus the term fire door is not always accurate.
One could make the argument that given the wording in irc 302 5 1 a fire rated door or its equivalent is required.
For instance according to nfirs and on track garage door in phoenix here are several incidents that have occurred and the cause of residential garage fires.
Open flame or smoking material 16 9.