For a typical two storey domestic home the building regulations require that where the property has an integral garage the door between the main property and the garage normally kitchen or utility should be a fd30 fire door 30 minute fire resistant and include smoke seals and self closing device it is also recommended that the garage.
Garage fire door building regulations.
Overall a fire rating can range from 20 minutes to three hours but keep in mind that 20 minute doors are designed to block smoke rather than flames.
The rating requirements for each type of door and wall in a building are set by a fire marshal or by building codes.
Building regulations for fire safety in residential homes including new and existing dwellings flats residential accommodation schools colleges and offices.
Compliance often involves a combination of methods from fire doors and egress windows through to smoke alarms and sprinkler systems.
By the way cutting a hole in the door to install a pet door flap voids the 20 minute rating.
Door to house this is the only place where any fire rating is specified.
If the door is not solid wood or steel honeycomb and at least 1 3 8 thick then it must have a 20 minute fire rating.
The reason the inspector wants to see the tag is because then they know it is a 20 minute fire rated door and meets one of the choices for type of door for garage house fire separation.
It is not likely that any raised panel 1 3 8 door will ever have such a rating or qualify for proper garage house fire separation.
If you are unsure about where to position your new window you can always hire a structural engineer to provide additional information and advice.
This is to ensure the new room has proper ventilation to prevent damp and also to provide an alternative fire escape route.
Fire safety regulations might cause some anguish for those building their own homes but it is understandably crucial to make sure your home is compliant.
Building regulations for garages garage building regulations.
Building codes for exterior doors.