Firefoam B2 and Gun Kit

Price incl. VAT
(Out of stock)

EVERBUILD Firefoam B2 Gun Kit is a rapid setting one part polyurethane foam with fire resistance properties that comes complete with the applicator gun and cleaning kit.

Each cannister of  foam expands on application to up to 50 times its original volume meeting the requirements of DIN 4102 Part 1 for Construction Materials and BS476 Part 20.

Fire rated up to two hours in certain joint confi­gura­tions.  When used as part of a fire rated joint, use in conjunction with Everbuild intumescent sealant  for maximum fire rating.

  • Once cured, the foam can be cut, sawn or plastered over after only one hour.
  • High degree of fire rating : slows down the passage of flames and smoke in comparison to standard B3 grades.
  • Economical in use - each cannister expands up to 50 times its original volume
  • Fills  broad gaps where most conventional fillers would fail.
  • Possesses insulating and sound deadening properties.

Ideal for filling :

  • Voids around pipe entries through fire rated walls.
  • Provides a fire rated seal around gaps in windows and door frames
  • Deep joints prior to applying sealant or plaster.
  • Electrical wire chasing prior to plastering, when  a fire rating is required.
  •  Gaps in stone, brick,­concrete or plaster.

Sold in two kits;

6 x Foam plus gun and gun cleaner.

12 x Foam plus gun and gun cleaner.

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Delivery options are only available for delivery to mainland UK (excluding Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man Northern Ireland and Eire). Delivery to Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man, Northern Ireland and Eire are limited to 20kg and are available at a Premium rate. Please contact us on or via our help line if delivery is required outside these areas. Alter­natively select ‘World-wide Delivery’ and a member of our sales staff will contact you regarding your options and costs.


We offer for the mainland UK , as standard, a FREE delivery service on all orders having a value greater than £200.00 (excluding VAT). For orders having a value less than £200.00 (excluding VAT) a carriage fee of £8.50 + VAT will be levied. Goods will be sent by a national carrier on their 1-2 working day standard service. Customers must understand that delays can always happen while their order is with the courier, for this reason we can not guarantee your order will be with you next day.

It is important that the customer ensures that all the delivery details are correct and that the customer or someone acting for the customer is able to sign for the delivery. Twistfix accept no liability for failed deliveries as a result of incorrect delivery details or the absence of any authorised signatory. Twistfix will attempt delivery to the recipient between the hours of between 8am and 6pm. If no one is available to receive the delivery an attempt may be made to leave the item with a neighbour. Alter­natively the carrier may return the item to the sorting office and leave a calling card at the recipient's address to advise of the attempted delivery. It is the respon­sibility of the customer to arrange to collect the item from the depot or to arrange re-delivery with the carrier. Further information regarding Delivery can be read at our Terms & Conditions.


Items returned and received in their original condition and packaging within 14 days of delivery will be accepted for exchange or refund subject to a 20% restocking fee. You will be responsible for the shipping costs incurred in returning the goods and should ensure the items are adequately insured while in transit to us. You should email to request to return items.

Where the goods are being returned because they are faulty or are not the goods that were ordered then, subject to the goods being returned in re-saleable condition, Twistfix will refund the cost of return shipping. Further information regarding Returns can be read at our Terms & Conditions.