Everbuild KOS Flue Cement Cartridge

Unit price per



Everbuild KOS Flue Cement is a high temperature ready-mixed fireproof mortar paste, designed for the safe installation/jointing of Type A1 (BSEN1857) concrete flue liners for use with domestic fires and stoves e.g. coal, wood-burning or gas (including flame effect). It's also good as a general-purpose fire cement in most applications where direct flame contact occurs.

Price Includes VAT

Everbuild KOS Flue Cement Cartridge

  • Easy to use and can be applied with a trowel
  • Heat resistant to temperatures up to 1250°C
  • Good adhesion to fire bricks, blockwork, stone and clayware
  • Suitable for domestic and commercial environments

Available in 300ml cartridges

Liner types (BSEN1857) A1, B1, C1 or direct equivalent or lower specification for chimneys conveying combustion products to corrosion class 3.

    How To Use


    All surfaces must be clean and dry. Dusty surfaces may be primed using a dilution of 4 parts water to 1 part PVA Bond and allowed to dry.


    Apply with a cartridge gun. Cut the tip of the cartridge taking care not to damage the thread. Fix the nozzle and cut it to the correct aperture.


      • As liner/block type can vary, always follow liner manufacturers instructions regarding installation and check this product is compatible with their systems
      • Protect joints from rain until construction is finished.
      • It is the users responsibility to determine suitability for the use which must be checked with the flue liner manufacturer prior to installation
      • In line with current standards and regulations, all flues must be fully smoke tested after insulation to ensure correct function. Similarly when the appliance is fitted the complete system must be smoke tested in line with BS5440 part 1 or direct equivalent by an approved installer, prior to being put into service

      Everbuild KOS Flue Cement Cartridge Datasheet


      Delivery within 2-5 days.  

      BANK HOLIDAY: Next working day orders are dispatched on working days. Orders placed before 3pm Thursday will be dispatched Friday. After 3pm Thursday orders will be dispatched Tuesday for delivery Wednesday. 




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      Next Working Day

      (Order before 3pm for same day dispatch)

      Under 2kg £4.95 £4.95 £7.95
      Up to 30kg £6.95  £18 £10.95
      30kg - 50kg £11.95 £25 £16.95
      50kg - 100kg £18.95 £37.95 £27.95
      100kg+ £45 £90 Not Currently Available
      Click & Collect FREE FREE

      Next working day delivery available on IN STOCK products.

      Out of stock products will be delivered next working day from when they are received into the warehouse. 


      Next Working Day Delivery Example

       Order placed Monday 11:30am Dispatched Monday pm Delivery Tuesday
      Order placed Monday 4:30pm Dispatched Tuesday am Delivery Wednesday
      Order placed Thursday 11:30am Dispatched Thursday pm Delivery Friday
      Order placed Thursday 4:30pm Dispatched Friday am Delivery Monday


      Click and Collect

      Click and Collect available within one hour on orders placed between 8am and 3:30pm Monday to Friday (excluding Bank Holidays).
      Orders placed outside of this time will be available within the next hour during the above slots. 
      You will receive an email when your order is ready to collect. 
      Collection Address: Unit 28, Ripley Business Park, Ripley Dr, Normanton Industrial Estate, Normanton WF6 1QT
      *If you live in a restricted area and would like to query your shipping cost please call our customer service team (01977 876116) and they will be able to give you a personalised quote. 
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