Envirograf Firobond Ultra Adhesive
  • Envirograf Firobond Ultra Adhesive

Envirograf Firobond Ultra Adhesive

Product 141

Firobond Ultra Adhesive bonds a wide range of materials and substrates, including all woods and joints, in fire protection applications.

  • Bonds mineral wool insulation
  • Magnesium oxide/cement boards
  • Fully cured in 24 hours
  • Thixotropic, for easy application

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£20.57 Tax incl.


Producing a strong bond, Envirograf Firobond Ultra Adhesive bonds and laminates a wide range of materials and substrates in fire protection and fire retardant applications, for up to 2 hours fire protection.

Specially developed for the bonding of mineral wool insulation to inorganic board materials, including magnesium oxide/cement boards, and laminated boards.

Use Firobond for the manufacture of internal partition walls, modules, doors, and partitions; and for laminating all types of wood joints and wood-related products, such as MDF, chipboard, plywood, etc, and any timber assembly used as a fire-rated product.

Firobond withstands high impact and impart stiffness to the bonded material once fully cured and dry.


  • Applied by extrusion nozzle or bead head by a pump system
  • Bonds all types of wood products and joints
  • Specially made for mineral wool insulation
  • Fully cured within 24 hours


Firobond Ultra Adhesive is thixotropic, which facilitates easy application, and it is designed to  minimise absorption into porous substrates. Firobond can be applied by an extrusion nozzle or bead head by a pump system for fast production rates.

Available in a 310ml tube to fit a standard mastic gun, or containers of ½ kg, 1 kg 2½ kg, 5 kg, and 20 kg.

Firobond Ultra Adhesive should be applied to the board material at a coating rate of 100g/m² [10m²/kg] to 250g/m² [4m²/kg] depending on the porosity of the substrate. Mineral wool should be consolidated into the adhesive within 5 to 10 minutes. The panel should be constructed immediately and placed under pressure to consolidate the bond, thus ensuring pressure is applied evenly across the panel. Can be applied to wood joints, used for applying Envirograf® intumescent paper, material, card, and veneers to wood, plywood etc. Also used to adhere veneers to MDF, plywood, etc, giving a fire-resistant bond.

  • Initial bond: 10 to 20 minutes
  • Tack life: 10 minutes
  • Full cure: within 24 hours


Tools and application equipment should be cleaned with water whilst the adhesive is still wet.

Materials Specification

  • Base: Inorganic Solution
  • Solids: 65-68%
  • Viscosity: 20.000 - 40.000 cps @ 20ºC
  • Colour: Beige
  • Tack Life: 10 minutes
  • Coverage: 100g/m² [10m²/kg] to 250g/m² [4m²/kg] (depending on the porosity of the substrate)
  • Cleaner: Water when still wet

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and ConditionsWe will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.

Any Envirograf products to be used in or for Harrods department store should be authorised with our Technical Team prior to purchase.

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Product Details
Product 141

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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