NBS Source
VFB 120/120 - Ventilated Cavity Fire Barrier

Application

The VFB 120/120 can be mechanically fixed horizontally within ventilated cavities behind external wall systems to act as a cavity fire barrier, and can be complemented by the NVFB for vertical applications. Suitable for use within the majority of construction types.

Description

An ’Open State’ cavity fire barrier system for ventilated cavities of up to 450 mm. The VFB 120/120 employs a high expansion intumescent seal fixed to high-density mineral wool. The product has undergone extensive fire testing to the general principles of BS EN 1363-1 and ASFP TGD19 (Fire Resistance Test for ‘Open-State’ Cavity Barriers). Features and benefits: Up to 120 minutes integrity/ insulation. Maintains 25 mm air gap. Up to 450 mm cavities.


Features and benefits:

  • 120 minutes integrity/ insulation.
  • Maintains 25 mm air gap.
  • Up to 300 mm cavities.
  • Tested on SFS system.
  • Weatherproof/ age tested intumescent.
  • Simple to install.

General information

Color

Black

Material

Mineral wool

Shape

Rectangle

Length

(Total cavity less 25 mm air gap) x 75 x 1000 mm.

-

Uniclass

Pr_25_80_80_44 Intumescent sleeved mineral wool cavity fire barriersPrimary

CAWS

P12/40 Mineral wool rigid batts

P12/360 Mineral wool rigid batts

Specification data - Intumescent sleeved mineral wool cavity fire barriers Enhanced data

Standard

Tested in accordance with ASFP Technical Guidance Document TGD 19.

Fire performance

Fire resistance: 120/ 120 integrity/ insulation to BS EN 1363-1 and EOTA TR31.

Material

Mineral wool section, polythene sleeved with continuous intumescent strip fixed to leading edge.

Thickness

75 mm.

Cavity width

For ventilated cavities of up to 300 mm. Insert requirements.

-

Air gap

25 mm.

Attachment

Screw fixed.

Up to 100 mm cavity.

2 No. multipurpose brackets and 4 no. pigtail screws.

101–240 mm cavity.

3 No. multipurpose brackets and 4 no. pigtail screws.

241–300 mm cavity.

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