Many building contractors who sub contract to skilled carpenters and joiners find that the doors, once completed do not adhere to legal requirements and therefore do not achieve certification.
This can cost builders and contractors a lot of money as the work effectively has to be redone.
The details that can avoid failure can be even down to the knowledge of a single hinge used or the correct method of sealing, and if there is a failing in any part of a door you can be held liable as the person responsible for appointing the carpenter whether or not a fire occurs .
