Cavity Barrier Solution for Brick Slip Systems

Tenmat’s VFB Horizontals are ’open state’ cavity fire barriers for installation horizontally behind brick slip systems, designed to leave a 25 mm air gap to allow for drainage and ventilation that is then sealed off in a fire situation.

The VFB Verticals are intumescent cavity fire barriers to be installed vertically behind brick slip systems, designed to be friction fit to the back of the horizontal rails with intumescent capabilities to seal any remaining gaps around rails to the back of the brick slips.

Each VFB Vertical is supplied with 13 intumescent FF107 Rail Pads that expand to seal the void between the rails and rear of the Brick Slips.

The VFB Horizontals are third party fire tested to ASFP TGD 19 (Fire Resistance Test for ‘Open State’ Cavity Barriers, whereas the VFB Verticals are tested to EN 1366-4 (Fire Resistance Test for Linear Joint Seals).

Each VFB variant consists of a specially formulated fire rated stone mineral wool section with an integral high expansion intumescent seal fixed to the leading edge.

In a fire situation, the intumescent seal rapidly expands to seal off the air gap horizontally and seals vertically around the rails to the back of the brick slips.

Features and benefits:

• Third-party fire tested behind brick slip systems.
• Tests include Ash & Lacy NaturAL-X and Mechslip systems.
• Fire ratings of minimum 90 minutes integrity and minimum 30 minutes insulation for cavities up to 395 mm.
• Fire tested on steel frame systems (SFS), concrete, masonry and blockwork inner substrates.
• Maintains a 25 mm air gap horizontally.
• Intumescent seals rails in vertical orientation.
• Durability and age tested.
• Fixing brackets included as standard.