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Stone wool intumescent cavity barrier.
SP Firestop VRB is a product specifically designed to form open-state cavity fire stops within buildings, which allow for ventilation and drainage of the cavity under service conditions.
It has been tested with ROCKWOOL RAINSCREEN DUO-SLAB to ASFP TGD 19: “Fire resistance test for ‘Open State’ cavity barriers, used in the external fabric of buildings”. The combination of non-combustible insulation and an effective fire barrier supports fire safe façade systems and aids the design of high rise buildings above 18 m.
The product comprises of a stone wool barrier with a continuous intumescent strip to its leading edge, encapsulated by a weather-resistant polythene sleeve. Installed horizontally and designed to ensure an appropriate open air space is maintained, the SP Firestop VRB is suitable for cavity widths up to 300 mm.
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ROCKWOOL SP Firestop VRB
65 mm pig tail screw
ROCKWOOL SP Firestop VRB Fixing Brackets
|Standard product features|
Reaction to fire class:
A1 to BS EN 13501-1.
Standards and approvals:
Fully tested to ASFP TGD 19: “Fire Resistance Test for ‘Open-State’ Cavity Barriers used in the external envelope or fabric of buildings”.