NVFB Non-Ventilated Fire Barrier

Tenmat’s range of NVFB Non-Ventilated Cavity Fire Barriers, are manufactured from stone mineral wool with an A1 Reaction to Fire Rating and are designed to maintain fire resisting performance to external wall cavities.

The NVFB Range also includes product variants designed with greater compression in mind for brickwork applications, as well as bespoke linear gap seals and cassette infills for use with cladding cassette panels.

NVFB Non-Ventilated Fire Barrier

PASSIVE FIRE PROTECTION

Effective fire resistance

For external wall applications, the standard NVFB Range is capable of providing effective fire resistance, for integrity (E) and insulation (I) for up to 120 minutes (EI120) depending upon the orientation of the NVFB and the construction type.

The Tenmat NVFB can be supplied cut to size to suit the cavity width or can be supplied in full slabs. It is supplied as plain stone mineral wool as standard and can also be supplied with foil encapsulation.

The Tenmat NVFB-LGS Linear Gap Seals offer fire resistance ratings of up to 240 minutes (EI240) for a range of internal wall and floor applications.

PASSIVE FIRE PROTECTION

NVFB Non Ventilated Fire Barrier

Tenmat’s NVFB Non-Ventilated Cavity Fire Barriers, are manufactured from stone mineral wool with an A1 Reaction to Fire Rating and are designed to maintain the fire resisting performance to external wall cavities.

The NVFB is capable of providing effective fire resistance, for integrity (E) and insulation (I) for up to 120 minutes (EI120) depending upon the orientation of the NVFB and the construction of the external walls.

Tenmat NVFB can be supplied cut to size to suit the cavity width or can be supplied in full slabs. It is supplied as plain stone mineral wool as standard and can also be supplied with foil encapsulation. For more information see the Technical Data Sheet, linked on this page.

NVFB-LD Non-Ventilated Fire Barrier (Low Density)

Tenmat’s NVFB-LD are full-fill cavity fire barriers manufactured from a Euroclass A1 Reaction to Fire classified 100mm thick low-density stone wool. The product is installed between the inner and outer substrates of a masonry façade to reinstate the fire resistance performance of the cavity. The lighter density allows greater scope for compression when installing within brickwork cavities when using wet mortar. For more information see the Technical Data Sheet, linked on this page.

NVFB-CI Cassette Infill

For cassette panel applications the NVFB-CI can be supplied. This is an A1 non-combustible stone wool insert designed and tested to be used to fill out the depth of the cassette panel, allowing a continuous air gap to be maintained behind the cassette panel without the need for notching around the panel joints. For more information see the Technical Data Sheet, linked on this page.

NVFB-LGS Linear Gap Seals

The Tenmat NVFB-LGS Linear Gap Seals are stone wool strips designed to be installed in rigid wall and rigid floor constructions to maintain the fire resistance of the fire separating element. The NVFB-LGS are supplied pre-cut in 1 metre lengths to suit joint widths up to 200mm. For more information see the Technical Data Sheet, linked on this page.

NVFB sizes

Cut to Size

NVFB – 100mm Deep x Width to suit cavity (+ required compression) x 1000mm

NVFB-LD – 100mm Deep x Width to suit cavity (+ required compression) x 1200mm

NVFB-CI – Typically 150mm Deep x Width to suit Cassette Panel x 1000mm

NVFB-LGS – Strips cut to various widths and depths to suit the linear joint x 1000mm long

Full Slabs

NVFB – 100mm x 605mm x 1003mm (available plain or foiled)

NVFB – 100mm x 1000mm x 1200mm (available plain only)

Non-standard 82mm thickness available upon request.

Products to suit

NVFB range at a glance

CCPI Verified (NVFB – Non Ventilated Fire Barrier)
UL-EU, UL Classification Report or 3rd Party Testing covering all product types
A1 Reaction to Fire
Suitable for cavities up to 600mm
Suitable for use vertically and horizontally
Tested for use in conjunction with masonry support brackets
Tested with SFS Systems with calcium silicate fibre cement boards
No maintenance is required after installation

Cavity Barrier Related Systems fire-rated up to 120 minutes integrity and insulation (EI120)
Linear Joint Systems fire-rated up to 240 minutes integrity and insulation (EI240)
Provided in 1-metre lengths
Standard thickness/depth of 100mm
Available in a reduced thickness/depth of 82mm
Tested with DPC to prevent moisture migration
Supplied plain as standard. Optional foil encapsulation is available