Composite Fire Doors

Composite fire doors are highly secure, fire resistant, and can be installed in a wide range of properties. ... Designed to withstand a blaze for up to 30 minutes and physically tested against a controlled furnace.

Why do you need to provide fire doors? They are specifically designed to withstand fire for up to 30 minutes. They are now legalally  requirement for flats which open onto communal areas shared with other tenants. This is to make sure crucial escape routes are protected if a fire breaks out.