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What are the Building Regulations for fire?
Most building work being carried out in Northern Ireland must comply with the Building Regulations. Part E of the Building Regulations states the following for external fire spread:
36. The external walls and roof of a building shall be so designed and constructed that they afford adequate resistance to the spread of fire over them, and from one building to another, having regard to -
a) in the case of an external wall - the use, position and height of the building; and
b) in the case of a roof - the use and position of the building.
How can you meet the requirements of the Building Regulations?
Technical Booklet E gives practical guidance on common building situations to meet the requirements of the regulations.
Note that complying with the guidance in Technical Booklet E does not guarantee that building work complies with the requirements of the regulations. There may also be other ways to comply with the requirements than those described in Technical Booklet E.
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Page updated 12/02/2026