SP FireStop OSCB 25
Consisting of an intumescent strip fixed to high density non-combustible stone wool insulation, SP FireStop OSCB 25 is designed to form an open-state cavity barrier within the building facade, preventing the passage of fire and smoke.
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Application(s)
- Fire Protection
- Cavity Barriers & Cavity Firestops
Product description
SP FireStop OSCB 25 is a continuous intumescent strip fixed to the leading edge of a foil faced stone wool barrier, encapsulated by a weather-resistant polythene sleeve. It forms an open-state cavity barrier within a rainscreen system. In the event of a fire, the intumescent strip will quickly expand outwards to seal off the cavity, preventing the passage of fire and smoke.
SP FireStop OSCB 25 is designed and tested for use in conjunction with ROCKWOOL® RainScreen® Duo Slab and NyRock® RainScreen 032 only.
Installed horizontally and designed to ensure an appropriate open air space is maintained, SP Firestop OSCB 25 is suitable for cavity widths up to 600mm.
*subject to application
- Tested in accordance with ASFP Technical Guidance Document 19
- Up to 120 minutes of fire integrity*
- Satisfies NHBC and CWCT guidance for ventilation gaps
Areas of application
SP Firestop OSCB 25 is suitable for use on the following construction types:
- Open-state cavity alongside Rainscreen duo slab and Nyrock rainscreen 032
Documentation
SP Firestop OSCB Datasheet
Consisting of an intumescent strip fixed to high density non-combustible ROCKWOOL insulation, SP FireStop OSCB is designed to form an open-state cavity barrier within the building facade, preventing the passage of fire and smoke.
SUIS ROCKWOOL UK
Safe use instruction sheet ROCKWOOL stone wool insulation products
Republic of Ireland Price List
Price List March 2025
UK Price List
Price List March 2025
Product variants
ROCKWOOL® helps Artesian House meet updated fire safety standards case study
To ensure regulatory compliance and thermal performance for the project, three ROCKWOOL products were specified, namely for insulation and cavity barrier protection.
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