FLAMRO NOVASIT BM Fire Protection Mortar 20 kg Bag for Cable and Combination Penetrations

Electricians and fire protection contractors working on commercial and industrial projects rely on FLAMRO NOVASIT BM to seal cable and combination penetrations in rigid walls and ceilings. This mineral-based mortar comes in a 20 kg bag and is mixed with water on site to form a non-expanding, fire-resistant seal that restores the fire integrity of building structures.

Key specifications

• Product type: Fire protection mortar
• Application area: Cable and combination penetrations
• Suitable substrates: Rigid walls and ceilings
• Fire resistance class: Up to EI 90 (S90) depending on configuration
• Base material: Mineral-based
• Color: Grey
• Mixing ratio: approx. 6.5–7.0 liters of water per 20 kg bag
• Processing time: approx. 30–60 minutes
• Initial setting time: approx. 2–4 hours
• Full curing time: approx. 7 days
• Density fresh mortar: approx. 1.0 kg/dm³
• Density dry mortar: approx. 0.7 kg/dm³
• Application temperature range: +5°C to +40°C
• Storage conditions: dry, cool, frost-free
• Shelf life: 12 months in original unopened packaging
• Approvals: ETA (European Technical Assessment), national technical approvals
• Expansion behavior: non-expanding

Why choose it

NOVASIT BM is a proven solution for passive fire protection in building services. Its non-expanding formulation ensures dimensional stability, preventing stress on cables and conduits while maintaining a tight seal against fire, smoke, and hot gases. The mortar is easy to mix and apply, with a workable consistency that fills irregular openings completely.

Ideal use cases

• Sealing cable bundles and conduits in concrete or masonry walls
• Combination penetrations with mixed services (cables, pipes, cable trays)
• Restoring fire compartmentation in existing buildings during retrofits
• Industrial facilities requiring EI 90 fire resistance for cable transits

Good to know

For best results, ensure substrates are clean and free of dust or grease. Mix only the amount that can be applied within the processing time. Protect freshly applied mortar from frost and rapid drying. Always refer to the current technical data sheet and national approvals for detailed installation instructions.