Rockwool Fire Barrier insulation slow the spread of flames Rockwool Insulation

Rockwool Fire Barrier

Fire stopping solution for pitch roof voids, heads of walls and concealed ceiling spaces to slow the spread of flames and smoke.

Offers fire resistance upto 2 hours.

Can be used in voids up to 10.5m high.

Non-combustible – Euroclass A1.

Patented quick fit system providing fire resistance for up to 1 hour.

Made from diabase rock, which is a renewable and plentiful natural resource.

Does not contain gases that have ozone depletion potential (ODP) or global warming potential (GWP).

Thicknesses and Availability:

This Rockwool Range includes the following readily available product thickness: 50mm.

The following thickness will need to be sourced from the manufacturer and may have minimum order requirements: 60mm.

Due to supply challenges from the manufacturer, please allow extended lead times on Rockwool products. In some cases, the lead times are as long as 12 weeks. Please feel free to contact me to check availability and lead times.

Product Information

General information about Rockwool Fire Barrier

Product Application

Prevents the spread of fire and smoke

Rockwools fire barrier system, Rockwool Fire Barrier, is suitable for use in pitch roof voids, heads of walls and concealed ceiling spaces where the prevention of spread of fire and smoke is required.

Product Make-up

Core

Durable non-combustable stone wool spun from volcanic rock, compressed and resin bonded into slabs

Facings

Unfaced and foil-faced options are available

Product Properties

Thickness 50mm to 60mm
Roll Length 3.7m and 3m (dependant on thickness)
Roll Width 1m

Product Prices

Buy Rockwool Fire Barrier

The prices and quantity discounts below are 'per roll' rates. Each roll is... 1x3.7m = 3.7m²

1 plus rolls @ £13.04 per m² = £48.26 (£57.91 inc-VAT) per roll
3 plus rolls @ £12.93 per m² = £47.83 (£57.40 inc-VAT) per roll
6 plus rolls @ £12.81 per m² = £47.40 (£56.88 inc-VAT) per roll
9 plus rolls @ £12.69 per m² = £46.97 (£56.36 inc-VAT) per roll
12 plus rolls @ £12.58 per m² = £46.55 (£55.86 inc-VAT) per roll
15 plus rolls @ £12.46 per m² = £46.12 (£55.34 inc-VAT) per roll

1 plus lengths @ £9.76 per lm = £29.29 (£35.15 inc-VAT) per length
10 plus lengths @ £9.68 per lm = £29.04 (£34.85 inc-VAT) per length
20 plus lengths @ £9.59 per lm = £28.78 (£34.54 inc-VAT) per length
30 plus lengths @ £9.51 per lm = £28.52 (£34.22 inc-VAT) per length
40 plus lengths @ £9.42 per lm = £28.26 (£33.91 inc-VAT) per length
50 plus lengths @ £9.33 per lm = £28.00 (£33.60 inc-VAT) per length

1 plus lengths @ £5.45 per lm = £16.34 (£19.61 inc-VAT) per length
10 plus lengths @ £5.40 per lm = £16.20 (£19.44 inc-VAT) per length
20 plus lengths @ £5.35 per lm = £16.06 (£19.27 inc-VAT) per length
30 plus lengths @ £5.30 per lm = £15.91 (£19.09 inc-VAT) per length
40 plus lengths @ £5.26 per lm = £15.77 (£18.92 inc-VAT) per length
50 plus lengths @ £5.21 per lm = £15.62 (£18.74 inc-VAT) per length

1 x coil @ £3.17 (£3.80 inc-VAT) per coil
2 x coils @ £3.14 (£3.77 inc-VAT) per coil
3 x coils @ £3.11 (£3.73 inc-VAT) per coil
4 x coils @ £3.08 (£3.70 inc-VAT) per coil
5 x coils @ £3.06 (£3.67 inc-VAT) per coil
6 x coils @ £3.03 (£3.64 inc-VAT) per coil

Limited stock of the plain Rockwool Fire Barrier 50mm is held at most of our depots. Where we need to bring stock in from the manufacturer, please allow up to 2 weeks for delivery

  • Generally 1 or 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

Product Performance

Fire Performance Classification A1 BS EN 13501-1
Surface Spread of Flame Non-combustable

Fire Performance

For further information on the below table, please see the Rockwool Fire System datasheet.

Rating Integrity Insulation Specification
30 min cavity barrier 30 min 15 min Fire Barrier 50mm1
30 min fire barrier 60 min 30 min Fire Barrier 60mm2
60 min fire barrier 60 min 60 min 2 x Fire Barrier 50mm3
90 min fire barrier 90 min 90 min 2 x Fire Barrier 50mm4
120 min fire barrier 120 min 120 min 2 x Fire Barrier 60mm5
N.B. Fire Performance table notes:
  • 1 1 x layer Rockwool Fire Barrier 50mm, vertical joints butt jointed.
  • 2 1 x layer Rockwool Fire Barrier 60mm (plain or foil face) with a minimum 100mm overlapped and stitched joints on vertical joints.
  • 3 2 x layers of Rockwool Fire Barrier 50mm back to back butt jointed with staggered vertical joints between the back to back layers.
  • 4 2 x layers of Rockwool Fire Barrier 50mm back to back butt jointed with staggered vertical joints between the back to back layers.
  • 5 2 x layers of Rockwool Fire Barrier 60mm (plain or foil face) butt jointed, incorporating a 40mm aircavity between the layers.

Acoustic Performance

The correct use of Fire Barrier within structural cavities and voids will reduce the level of transmitted sound.

  • Rw= up to 30db for typical lay-in grid suspended ceiling
  • Rw= up to 42db for ceiling and Rockwool Fire Barrier 50mm
  • Rw= up to 44db for ceiling and Rockwool Fire Barrier 50mm Foil Faced
  • Rw= up to 50db for ceiling and 2 x layers of Rockwool Fire Barrier 50mm Foil Faced

For specific acoustic requirements please contact ROCKWOOL Technical Solutions.

Product Certificates

Please visit the Rockwool website for product certificates.