Fire Barrier Systems
ProductAs part of the comprehensive FirePro range of products, Rockwool Fire Barrier systems offer labour-saving solutions to prevent fire and smoke spread within roof and ceiling voids for all general conditions encountered on site. The vertically hung Fire Barriers are capable of achieving both integrity and insulation protection periods from 15 to 120 minutes and the friction fitted Fire Barrier Slab can also provide 60 minutes integrity and insulation. It is Rockwool’s essential insulation performance that limits the heat transfer through the barriers, preventing ignition of combustible materials in adjacent areas.
The new patent applied for, support system (application no. 0329817.1) offers a quick, cost effective installation method for the Fire Barriers for periods up to 60 minutes. This focus on ease of construction and installation has the added benefit of reducing the risks of installation error. 120 minute systems are also available using the traditional support methods. Extended drops are easily catered for, with the system capable of maintaining its performance in void heights up to 10.5 metres.
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For inhibiting the spread of fire and smoke in concealed spaces
Fixing solutions to concrete decks – benefits
• fast new patented angle and clamping plate system
• no nuts and bolts to fasten
• simple hammer fix fixing system
• simple angle support with stamped tongues
• one angle supports 2 barriers for 1 hour
Fixing solutions to timber and steel – benefits
• no bolts required
• standard no. 10 wood screws for timber
• self tapping screws for steel purlins
• fixings for clamping plate extended to 450mm
• speed of installation increased
• costs of installation reduced Firestopping solutions for voids up to 1 metre using Fire Barrier Slab – benefits
• no bolts required
• standard no. 10 wood screws for timber
• self tapping screws for steel purlins
• fixings for clamping plate extended to 450mm
• speed of installation increased
• costs of installation reduced Fire Barrier Slab dimensions1000mm x 600mm x 100mm Fire Barrier dimensionsStandard width 1 metre | Thickness (mm) | Length (m) | | 50 | 4 | | 60 | 3.5 |
Fire performance and specification| Product | Fire performance | Specification | | | Integrity (mins) | Insulation (mins) | Report No. | | | 0.5 hour Cavity Barrier | 60 | 15 | 116911 | 1 layer 50mm | | 0.5 hour | 60 | 30 | 119720 | 1 layer 60mm Fire Barrier Fire Barrier
foil faced overlapped joints | | 1 hour Fire Barrier | 60 | 60 | 116912 | 2 layers 50mm Fire Barrier
staggered vertical joints | | 1.5 hour Fire Barrier | 90 | 90 | 51812 | 2 layers 50mm Fire Barrier
staggered vertical joints | | 2 hour Fire Barrier | 120 | 120 | 44509 | 2 layers 60mm Fire Barrier
foil faced separated by 40mm airspace | | 1 hour Fire Barrier Slab | 240 | 60 | 122729 | 100mm foil faced slab |
DescriptionRockwool Fire Barrier has a 25mm galvanised wire mesh stitched with wire to one face to produce a flexible Fire Barrier with optional aluminium foil faces. Rockwool Fire Barrier Slab has a factory applied foil finish to both faces. Rockwool Fire Barrier and Fire Barrier Slab achieve a reaction to fire classification of A1 as defined in BS EN 13501:1 Rockwool Fire Barrier systems have been developed to inhibit the spread of flames, heat and smoke through concealed spaces in buildings and improve sound reduction. The fixing solutions described in this data sheet have been designed to simplify detailing and incorporate, where possible, commonly available building fasteners and components. Acoustic performanceThe correct use of Fire Barrier within structural cavities and voids will reduce the level of transmitted sound. | Room to room attenuation | Rw dB1 | | 1 Typical lay-in grid suspended ceiling | 30 | | 2 As above, with 50mm Rockwool Fire Barrier | 42 | | 3 Applied as 2, but Rockwool Fire Barrier foil faced | 44 | | 4 Applied as 2, but two thickness of 50mmRockwool Fire Barrier – both foil faced | 50 | | 5 Rockwool Fire Barrier Slab foil faced both faces | 50 | 6 If ceiling is plasterboard, add between 2–3 db | |
Note: values are approximate Fire Barrier SlabFire Barrier Slab offers a new solution to this typical application for up to 4 hours integrity. Rockwool Fire Barrier Slab is an aluminium foilfaced slab used to close voids up to 1m in height and 20m in length supported by a masonary wall (minimum density of 400 kg/m3)offering the same fire performance. The slabs are cut to height and friction fitted within the opening.Acoustic Intumescent Sealant is applied to the butt joints andperimeter of the barrier. Fire performance of Rockwool Fire Barrier SlabNo penetrations 4 hour integrity; 1 hour insulationService penetrations 11⁄2 hour integrity; 1 hour insulationWhen subjected to BS 476:Part 20 and 22: 1987 – reference WFRC –report C122729. 
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