SP FireStop OSCB 25 & 44 - Cavity barrier
Verified by manufacturer 1 month ago
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 |
Specification data - Sleeved mineral wool cavity barriers
General requirements | Insulation products generally. |
Cavity barriers | |
Attachment | Not required.Fixing bracketsGuidance 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
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Recyclability | Can be recycled |
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 |
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