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SP FireStop OSCB 25 & 44 - Cavity barrier
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ROCKWOOL SP Firestop OSCB 25
ROCKWOOL SP Firestop OSCB 25
Open state cavity barrier for rainscreen systems.
Application
Designed to form a cavity barrier in ventilated facade systems.
Description
An advanced intumescent strip fixed to high density non-combustible ROCKWOOL insulation, SP Firestop OSCB is designed to form an open-state cavity barrier within a rainscreen system. This allows ventilation and drainage under normal service conditions, while in the event of a fire the intumescent strip quickly expands outwards to seal the cavity, preventing the passage of fire and smoke.
Features and benefits:
- Fully tested to ASFP Technical Guidance Document 19: Fire resistance Test for ‘open-state’ cavity barriers used in the external envelope or fabric of buildings.
- Up to 120 minutes' fire integrity and insulation.
- Provides 25/ 44 mm airspace.
- Satisfies NHBC and CWCT guidance for ventilation gaps at fire barrier locations.
- Weather resistant.
Overall cavity width:
Available in any size up to the maximum stated. Consult manufacturer's literature for details.
- SP Firestop OSCB 25: maximum total cavity width – 600 mm.
- SP Firestop OSCB 44: maximum total cavity width – 425 mm.
General information
Material | Stonewool |
Shape | Rectangle |
Length | 1000 mm |
Width | 425 mm 600 mm |
Height | 90 mm |
Uniclass | |
CAWS | H92/776 Thermal insulation F30/180 Cavity closers P10/420 Sleeved mineral wool small cavity barriers F30/18 Cavity closers P10/70 Sleeved small cavity barriers P10/75 Wired small cavity barriers |
SKU Code | OSCB 25, OSCB 44 |
Specification data - Sleeved mineral wool cavity barriers
Classification data | |
General requirements | Insulation products generally. |
Cavity barriers | |
Attachment | Not required. Fixing brackets Guidance for specification option: Maximum 500 mm centres. Pig tail screws. Guidance for specification option: Maximum 333 mm centres. |
Size | 1000 mm. Manufacturer guidanceLength. |
Fire performance | Not applicable. Up to EI 120. |
Overall cavity width | 600 mm. Guidance for specification option: Insert requirements, maximum total cavity width: 600 mm. Provides 25 mm airspace. |
Thickness | 90 mm. |
Sustainability data
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Stonewool |
Recyclability | Can be recycled |
BIM objects
This BIM object has been authored to meet the requirements of the
Find out more about the
| Platform | Compatible | Version |
|---|---|---|
 IFC | - | 1 |
 Revit | - | 1 |
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