Welcome to the training on building services penetrations, focusing on fire compartmentation. In partnership with five not-for-profit organisations, we introduce the Best Practice Design and Installation Guide: Firestopping of Service Penetrations. The guide aims to encourage early prioritisation of firestopping design among construction stakeholders to avoid later complications. It is not an installation manual but a framework for best practices. The training will cover seven stages of the guide, providing insights into effective firestopping practices for enhancing building safety..