9.10.16.1. Required Fire Blocks in Concealed Spaces

 9.10.16.1. Required Fire Blocks in Concealed Spaces

Attic spaces are known to contribute to fire spread. Fire can enter such spaces through the overhanging #soffits or from #openings in the attic #ceiling. #Fire can also originate within the #attic as a result of improper #electrical installations (e.g., loose connections or overheated recessed lights). To reduce the speed of fire travel through large unoccupied attic areas and roof spaces, fire blocking is required at suitable intervals (not more than 20 m (65 ft.)), so that the individual open areas are kept reasonably small (at least 300 m2 (3 220 ft.2)). In the case of truss roofs, sheet type fire blocking is usually fastened to the sides of trusses at suitable intervals.

Quoted from Illustrated Users' Guide--NBC2015

#fireblock #concealedspace #atticspace #roofspace