A review of the latest research and fire testing evidence for cross-laminated timber structural systems.. CLT Fire Performance Evidence Key Research Programmes ETH Zürich — auto extinction research (2015 2023) NRC Canada — full scale apartment fire tests RISE Sweden — encapsulated CLT fire testing BRE UK — BS 8414 tests with CLT substrates University of Queensland — exposed CLT ceiling fire tests Key Findings CLT achieves auto extinction at char depths <25mm under certain conditions Delamination of adhesive layers causes secondary flaming Encapsulation with Type X plasterboard extends fire resistance by 40 60 minutes Exposed CLT surfaces contribute additional fire load of approximately 25MJ/m² per mm of char For CLT fire engineering, contact us.