The Chimney Estimating Calculator is a collection of items of Labour, Material and Plant required to fit out a standard chimney. You should review each item in the Estimating Calculator to see whether you require them and check that the quantities and prices are adequate.

The Chimney Estimating Calculator calculates the following items:

  • Starter block and fire back
  • Flue blocks
  • Flue sealant
  • Flashings
  • Plus all labour associated with the above

This Estimating Calculator is NOT linked to the Specifications.


  • You should pay particular attention to the brickwork or blockwork surrounding the flue because the Chimney Estimating Calculator does not allow for this. You should estimate this when you are calculating the brickwork or blockwork.