Open State Cavity Barrier (OSCB) - Ventilated cavity barrier
Verified by manufacturer 5 months ago
OSCB25
OSCB25
Open state cavity barrier for ventilated cavities.
Application
- Suitable for installation horizontally.
- The cavity barrier must run continuously and uninterrupted apart from where it abuts the vertical cavity barrier. It must not be penetrated by other elements including mechanical or electrical services.
Description
Cavity barriers designed for installation within cavities where ventilation is required in service use. Manufactured from non-combustible rockfibre mineral wool with a reactive intumescent layer, the cavity barrier can provide an air gap of up to either 25 or 44 mm. The intumescent layer will rapidly expand when exposed to heat in a fire event, closing off the air gap and preventing vertical fire spread within the external wall cavity.
Features and benefits:
- Reactive intumescent element.
- Either 60 minutes or 120 minutes fire integrity.
- 25 mm or 44 mm air gap for ventilated cavity.
- Tested for ASFP TGD19 standards.
- Fixing brackets included as standard.
ARC OSCB open state cavity barriers should be partnered with ARC Fire Stop Slab installed vertically for a complete cavity barrier solution.
General information
Color | Red Guidance for specification option: With:
|
Finish | Film |
Material | Mineral wool Guidance for specification option: Rock fibre mineral wool. |
Shape | Rectangle |
Length | 1200 mm |
Width | Bespoke Guidance for specification option: 100–450 mm. |
Height | 82 mm |
Uniclass | |
CAWS | P12/360 Mineral wool rigid batts P12/40 Mineral wool rigid batts |
Specification data - Mineral wool fire-stopping
Fire performance | 60 minutes integrity and insulation. |
Widths | Guidance for specification option: Cavity width less 25 mm. Insert requirements. |
Colours | Red with green strip. |
Gap | 25 mm maximum air gap. |
Length | 1200 mm. |
Thickness | 82 mm. |
Cavity width | Manufacturer guidance100–450 mm. Insert requirements. |
Fixing method | ARC pigtail screw and ARC OSCB fixing bracket. |
Third-party certification | ISOQAR and UKAS. |
Sustainability data
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Mineral wool Guidance for specification option: Rock fibre mineral wool. |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 IFC | - | 1 |
 Revit | - | 1 |
Literature
Open State Cavity Barrier (OSCB) Data Sheet