Everbuild KOS Fire Cement Cartridge Black

Unit price per



Everbuild KOS Fire Cement contains the same formula as Kos Black Fire Cement but in a handy sealant, gun applied cartridge.

Price Includes VAT

Everbuild KOS Fire Cement Cartridge Black

  • 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

Can be used with

  • Fire bricks
  • Fire grates
  • Flue pipes
  • Flue bricks
  • Boilers
  • Fireplaces
  • Solid fuel ovens

How To Use


All surfaces must be clean, free from dust, grease and other contamination.
Wet all surfaces to give a good key


  1. Use straight from the cartridge
  2. If required soften with a small amount of water 
  3. Work the fire cement well into the joints
  4. After applying, gradually increase heat over a 4 hour period.
  5. Make good any cracks that may form with fresh cement to form a smoke tight seal.


  • Not suitable as a gas sealant
  • Always moisten surfaces prior to applying
  • Always apply heat gradually
  • Black Everbuild KOS Fire Cement will turn buff/grey above ~650°C
  • Not suitable for use where the product will be exposed to water/rain

Everbuild KOS Fire Cement is a ready mixed blend of thermosetting resins and temperature resistant inorganic fillers that cures when exposed to heat to give a seal that is resistant to temperatures up to 1250°C. Suitable for fixing/repairing fire backings etc. 

Everbuild KOS Fire Cement Cartridge Black Datasheet


Free Delivery on orders over £29.99

Standard Delivery: £4.99

Next Working Day Delivery: £6.99

(Order must be placed before 3pm for same day dispatch)


Standard Delivery: Up to 5 working days


Next Working Day Delivery Examples


Order Placed Monday on or before 14:59 

Dispatched Monday 

Delivery Tuesday 

Order Placed Monday on or after 15:00

Dispatched Tuesday

Delivery Wednesday

Order Placed Thursday on or before 14:59 

Dispatched Thursday

Delivery Friday

Order Placed Thursday on or after 15:00

Dispatched Friday 

Delivery Monday 

Orders Placed on Weekends Dispatched Monday Delivery Tuesday



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