Penetration Sealing / Fire Stopping Contractors

486 FIRAS-certified contractors across the UK

Penetration sealing (fire stopping) involves sealing gaps and openings where services such as cables, pipes, and ducts pass through fire-rated walls and floors. This is critical for maintaining compartmentation and preventing the spread of fire and smoke between building zones. Post-Grenfell building safety audits have identified fire stopping deficiencies as one of the most common passive fire protection failures across the UK building stock.