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Silverliner® Open State Cavity Barrier

Verified by manufacturer 2 months ago

FSi Limited

Open state cavity barrier.

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Application

  • Between the inner substrate and the external building envelope.
  • In conjunction with Paraflam® where vertical Cavity Barriers are required.
  • Where movement of air and moisture is required.
  • Systems to cover void ranges from 2mm - 550mm

Description

Silverliner® Open State Cavity Barrier (OSCB) is developed to protect the voids between the outer façade and the inner construction element of the building.

The product is designed for use in a ventilated façade, the Silverliner® OSCB allows for 25 mm or 50 mm linear air gap to ensure movement of air and drain any moisture within the facade. The aluminium foil restricts fibre migration and offers a class ‘0’ rating.

In the event of a fire the intumescent outer edge of the product will expand and close the ventilation gap between the product and the façade preventing the passage of fire and smoke from one compartment to another.


Features and benefits:

  • Third Party approved - IFCC - IFCC 1672.
  • Assumed working life of 25 years.
  • Non-combustible core.
  • 'Dry fit’ solution, no cure time.
  • Fast installation using brackets.

General information

Length

1000 mm

Width

Bespoke

Manufacturer guidance

Width is variable depending on building requirements; consult manufacturer.

Uniclass

Pr_25_57_06_56 Mineral wool slab insulationPrimary

CAWS

P12/360 Mineral wool rigid batts

P12/40 Mineral wool rigid batts

P12/41 Mineral wool rigid batts - ablative coated

Product range

Mineral wool slab insulation

Specification data - Mineral wool slab insulation

Standard

To BS EN 1363-1.

Guidance for specification option:

Tested in accordance with ASFP TGD19: “Open State” Cavity Barrier used in External Envelope or Fabric of Buildings.

This test method specifies a procedure for determining the fire resistance of ‘open state’ cavity barriers when subjected to the standard fire exposure conditions and performance criteria stipulated in EN 1363- 1.

This method is applicable to non-loadbearing, horizontally oriented ‘open-state’ cavity barriers, which are used to provide fire separation within cavity voids such as those located between an external envelope and the face of a building. The tests have been undertaken to assess the ability of the Silverliner® OSCB systems to reinstate

the fire resistance rigid/aerated concrete supporting construction.

This is the standard assembly for testing such systems as performance of the barriers can then be classified.

Thickness

75 mm.

120 mm.

Facing

Faced with aluminium foil.

Density

80kg/m³.

Guidance for specification option:

Mineral fibre.

Fire performance

Up to 120 minutes, tested in accordance with ASFP TGD 19.

Ventilation

≤ 5 minutes.

Manufacturer guidance

void closure time

Volume void

≤ 550 mm.

Guidance for specification option:

Total void size.

Air Gap Volume

≤ 50 mm.

Size

1.5 mm thick, 390 or 635 mm length.

Guidance for specification option:

For product size in excess of 300 mm (w) use 635 mm.

Material

Steel.

Fixings

Three brackets per 1000 mm at 250 mm.

Guidance for specification option:

Length 390 or 635 mm.

Literature

Silverliner OSCB

Silverliner OSCB

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