Summary
Open state cavity barrier for rainscreen systems.
Open state cavity barrier for rainscreen systems.
Application
Designed to form a cavity barrier in ventilated facade systems.
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.
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.
Digital objects
Material
Stonewool
Stonewool
Shape
Rectangle
Rectangle
Length
1000 mm
1000 mm
Width
425 mm, 600 mm
425 mm, 600 mm
Height
90 mm
90 mm
SKU Code
OSCB 25, OSCB 44
OSCB 25, OSCB 44
Specification
General requirements
Insulation products generally.
Insulation products generally.
Cavity barriers
-
-
Attachment
Not required., Fixing brackets, Pig tail screws.
Not required., Fixing brackets, Pig tail screws.
Size
1000 mm.
1000 mm.
Fire performance
Not applicable., Up to EI 120.
Not applicable., Up to EI 120.
Additional properties
Overall cavity width
425 mm.
600 mm.
Thickness
90 mm.
90 mm.
Sustainability data
Country of material origin
United Kingdom
United Kingdom
Country of product manufacture
United Kingdom
United Kingdom
Material
Stonewool
Stonewool
Recyclability
Can be recycled
Can be recycled