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Open State Cavity Barrier 90/25 (OSCB 90/25)

Verified by manufacturer 3 months ago

AIM

Extended cavity fire barrier performance within rainscreen facades.

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Application

For use within open state cavities (e.g. rainscreen systems), allowing ventilation and drainage of the cavity under service conditions.

Description

Polythene sleeved, ROCKWOOL® stone wool fire barrier faced with high performance intumescent material designed for use within open state cavities (e.g. rainscreen systems), allowing ventilation and drainage of the cavity under service conditions. Open state cavity barriers provide an effective fire barrier for ventilated voids up to 600 mm in depth. OSCB 90/25 delivers a fire rating of up to 90 minutes insulation and integrity with an air space of 25 mm.


The AIM OSCB 90/25 range has been tested to provide solutions that accommodate cladding rails interrupting the line of the barrier.


Features and benefits:

  • Suitable for 25 mm air space.
  • Quick and cost-effective installation.
  • Galvanized steel fixing brackets and coarse wound screws are supplied as standard.
  • Tested in accordance with ASFP Technical Guidance Document 19 (TDG 19) and BS EN 1363-1.
  • Colour coded label for ease of identification.

General information

Color

Clear

Material

Polythene

Stonewool

Shape

Rectangle

Length

1000 mm

Width

Bespoke

Guidance for specification option:

Can be used in cavities up to 600 mm where the barrier is supported by Rockwool Duoslab insulation or equivalent but is outside of the scope of IFC Certificate IFCC 1901.

Manufacturer guidance

Manufactured to suit cavity voids of 50–425 mm.

Height

90 mm

Uniclass

Pr_25_80_80_44 Intumescent sleeved mineral wool cavity fire barriersPrimary

CAWS

P12/360 Mineral wool rigid batts

P12/40 Mineral wool rigid batts

Specification data - Intumescent sleeved mineral wool cavity fire barriers

Standard

Tested and certified in accordance with ASFP Technical Guidance Document TGD19 and to BS EN 1363-1.

Third-party certification

IFCC 1901.

Fire performance

90/90 integrity/ insulation.

Material

Polythene sleeved ROCKWOOL® stone wool with intumescent strip.

Thickness

90 mm.

Cavity width

Guidance for specification option:

Total cavity size less than 25 mm according to barrier required.

Air gap

25 mm.

Attachment

Galvanized steel fixing clips.

Guidance for specification option:

Standard.

Stainless steel fixing clips.

Guidance for specification option:

Optional.

Stainless steel course wound screws.

Guidance for specification option:

Standard.

Galvanized course wound screws.

Manufacturer guidance

Galvanized clips as standard; stainless steel option available. Stainless Steel Coarse Wound Screws as standard.

Length

1000 mm.

Colour

Clear.

Sustainability data

Material

Polythene

Stonewool

Recyclability

-

Manufacturer guidance

Rockwool Stone Wool products may be recycled at the end of their life by Rockwool Ltd (dependent on contamination, quantity etc).

Literature

AIM Open State Cavity Barrier Technical Guide 2024

AIM Open State Cavity Barrier Technical Guide 2024

AIM OSCB 25 Installation Guide Issue 1 06 2024

AIM OSCB 25 Installation Guide Issue 1 06 2024

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