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FB30 Fire barrier curtain

Product 56


Intumescent-coated fire curtain to provide 30 minutes protection and Class 0 spread of flame

Not available to purchase online.

We need to ask you a few more questions and ensure this is the suitable product for your needs.

To order please call us on +44 (0) 1 304 842 555


Fire Barrier Curtain (FB30)

Fire barrier curtain FB30, a 1mm thick x 1220mm wide reinforced glass cloth curtain impregnated with an intumescent coating.

  • Available up to 40m long rolls. Very robust material, ideal for drop curtains up to 10m.
  • FB30 is also suitable for affixing to a range of surfaces and structures, such as steel, trunking, wood, and concrete.
  • Provides effective fire protection against the spread of flame, insulation, acoustic protection, and also smoke sealing.
  • Also non-fibrous and dust-free, ideal for clean rooms, hospitals, and computer suites.

Additionally, for greater fire protection between floorboards and secondary floors, use fire barrier curtain horizontally over a suspended ceiling. Furthermore, use in conjunction with Envirograf® Product 13 or Product 16 to provide an effective penetration seal.

In addition, an acoustic version, FB30/AC, is available to meet airborne and impact sound reduction, meeting requirements of Document E of UK Building Regulations. FB30/AC has a 13mm acoustic sponge adhered to the cloth. For greater acoustic properties, a sponge up to 20mm can be used. For additional insulation, see Product 54 Insulated Fire Barrier Curtain.

See the order references tab for barrier curtain fixings.

Fire barriers provide an effective solution for rooms or areas within buildings that need fire protection. Browse our full range of Floor, Ceiling, and Wall Protection products online.


– An effective barrier, providing up to 36 minutes integrity- Can be fixed to steel, wood and between concrete soffits and suspended ceilings with Envirograf® metal straps
– Can be wrapped around steel, trunking or wood as a fire barrier
– Non-fibrous and dust free, ideal for use in clean rooms, hospitals and computer suites
– Services can be passed through the curtain – use in conjunction with Envirograf® Products 13 or 16 to provide an effective penetration seal

If additional insulation is required, please see our Insulated Fire Barrier Curtain (Product 54).

Application Instructions

All curtains are supplied with sufficient adhesive for the 50 mm overlap. The adhesive can be applied to
one face and pressed together, although it is best to apply a small layer to each face and apply
together, giving a much quicker bond. Just hold together for approximately 1 minute, to allow the
adhesive to grip. 1 litre of Adhesive is sufficient for 50 metres of curtain.
Should the Curtain be installed in a windy area, Envirograf ST50 or ST75 Class 0 Adhesive Tape can
be applied over the glued joint to hold it more securely while the Adhesive dries.
For fixing the top, bottom and ends of the Curtain; for timber supports use Envirograf FB/T Battens,
fixed through to the timber with 30 mm large head clout nails. For concrete, block or brick fixing, use
FB/C Metal Straps – 25 mm wide, with 2 mm holes every 300 mm apart. These can be fixed with spit
nails, screws, pop rivets (steel) or self tapping screws to the steel work.
Where cutting around services is required;
1. Wrap around the service with a section of the curtain and adhere together using the adhesive.
2. Cut a cross – X – in the barrier to allow the service through. Once the service is wrapped,
adhere the cut area of the curtain to the wrapped service.
3. If necessary, fit a patch over the curtain with the adhesive, using a section of curtain as the

Case Studies

  • Anglo-Nordic co-operation in timber fire protection

    Norwegian-style log cabin protected with fire barrier curtain and fire retardant paint.

  • Below thatch roof fire protection

    An authentic African village protected with fire barrier curtain.

Order References / Sizes

FB30/1220            1220mm wide

FB/CLIP3              For suspended ceilings (fit one every 500mm)


ACOUSTIC FB30 FIRE BARRIER CURTAIN                                                                                                                                                                    

FB30/1220/AC     1220mm wide      16½ mm thick



For steel, timber or concrete or suspended ceilings fixing. 

REF                        LENGTH                                                                                                                                       

FB/C1                     1000mm



Pre-drilled metal plates for ease of fixing.                                                                                                                                 

FB/FP                     30mm x 40mm


Where the curtain is in contact with T-bars, we can supply a U-clip which enables the curtain to be folded over the T-bar and U-clips pressed onto T-bars with pliers.

 FB/CLIP3               For suspended ceilings fit one every 500mm

TB                           Turn Button Clip for making door openings


White adhesive tape for joints and around services.

ST50                      50mm wide          50m roll

ST75                      75mm wide          50m roll


Fireproof adhesive is supplied for the 50mm overlap joints – brush applied. If extra is required, order the following:                                                                                     

FPA/WT                 Fire proof adhesive (water-based) 310ml

FPA/W                    Fire proof adhesive (water-based) per litre


See Product 137 for aerosol spray adhesive 500ml (HI-TAK)