NVFB-LD - Non-Ventilated Fire Barrier

Tenmat’s Non-Ventilated Fire Barrier (NVFB-LD) is a full fill cavity fire barrier manufactured from a Euroclass A1 reaction to fire classified, 100 mm thick low density stone wool.

The lower density design allows the 5 mm compression requirement to be more easily achieved. This results in greatly reduced risk of pushing out bricks when installing in masonry cavities using wet mortar, which can speed up installation and progress on site.

NVFB-LD has been tested to EN 1366-4:2021 and can provide up to 120 minutes integrity and 60 minutes insulation fire resistance performance. It is designed and tested for installation within masonry cavities up to 300 mm wide to reinstate the fire resistance performance of the cavity. Consult manufacturer for full fire resistance performance based on cavity widths and orientation.

Features and benefits:

• CCPI verified.
• Fire tested to EN 1366-4:2021.
• A1 reaction to fire.
• Low density design.
• Allows ease of compression when installing in cavities with wet mortar.
• Only 5 mm compression required.
• Suitable for masonry cavities up to 300 mm.
• Tested both vertically and horizontally.
• Supplied as plain mineral fibre as standard.
• Provided in 1.2 m lengths.
• Standard thickness of 100 mm.
• No maintenance required after installation.