Open State Cavity Barrier 90/25 (OSCB 90/25)
Verified by manufacturer 4 months ago
Extended cavity fire barrier performance within rainscreen facades.
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 guidanceManufactured to suit cavity voids of 50–425 mm. |
Height | 90 mm |
Uniclass | |
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 guidanceGalvanized 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 guidanceRockwool 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 OSCB 25 Installation Guide Issue 1 06 2024
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