CROSS Safety Report: Fire in roofs containing photovoltaic panels

This month's CROSS report serves as a reminder to all engineers about the problems associated with RAAC planks and to be vigilant during any site inspections of existing buildings.

This month we present a report concerning multistorey cross-laminated timber buildings and their risk of collapse during a fire.

CROSS-UK was expanded to cover fire safety reporting following recommendations by Dame Judith Hackitt in her post-Grenfell report Building a Safer Future . This month we present a fire safety report illustrating the implications of substituting a product within a tested system without further testing or justification.