Fire resisting compartments are created to contain and prevent fire and smoke from spreading within building structures, however, this also presents a parallel threat as most concealed cavities between fire resisting walls and floors are interlinked. Gaps typically occur at service penetrations through walls and floors, but also include gaps left for structural movement and gaps left due to poor workmanship. The importance of sealing gaps in this type of construction is therefore vital to ensure the compartment works to its optimum ability to save life and property. Firemac FM Fire Stop range is ideal for this application.