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ROCKWOOL SP Firestop VRB
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.
Advantages:
- 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 18 m.
| Uniclass 2015 | |
| CAWS | F30/18 Cavity closers F30/180 Cavity closers K10/530 Cavity fire barriers within partitions/ wall linings P10/420 Sleeved mineral wool small cavity barriers P10/70 Sleeved small cavity barriers P10/75 Wired small cavity barriers |
| Product Reference | ROCKWOOL SP Firestop VRB |
| Width | 75 mm125 mm150 mm175 mm205 mm225 mm250 mm |
| Accessories | None65 mm pig tail screwROCKWOOL SP Firestop VRB Fixing Brackets |
| Standard product features | Thickness: 75 mm. Length: 1000 mm. Reaction to fire class: A1 to BS EN 13501-1. |
| Product Options | 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”. |