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The purpose-made solution for cavity fire stopping.

ROCKWOOL 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.

The SP Firestop VRB 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 18m.

Installed horizontally and designed to ensure an appropriate open air space is maintained , the SP Firestop VRB is suitable for cavity widths up to 300mm

Features & Benefits

  • Fully tested to ASFP TGD 19: “Fire Resistance Test for ‘Open-State’ Cavity Barriers used in the external envelope or fabric of buildings”
  • Up to 60 minutes fire integrity and insulation
  • Satisfies NHBC and CWCT guidance for ventilation gaps at fire barrier locations
  • Weather resistant
  • Easy site storage and handling
  • Combined with Rockwool Rainscreen Duo-slab it simplifies the design of high rise buildings above 18m