Updated guidance on rooflight non-fragility classifications, from NARM
NARM has published an updated version of its Quickguide 08, entitled ‘Understanding CWCT Classifications of Rooflight Types’. The CWCT (Centre for Window & Cladding Technology) tests for non-fragility comprise of soft body and hard body impact tests as well as a load retention test. They are intended to identify what glass size and type of…