The Chasing Walls Estimating Calculator calculates the Labour and Material required to create channels ready for the installation of pipes or wires etc. into existing walls.

Use this Estimating Calculator to estimate the following items:

  • Labour to cut channels and recesses and to clear debris
  • Skip requirements
  • Bonding plaster
  • Labour to make good

Enter the dimensions of the channel(s) and the number of sockets to be recessed, if applicable. Enter Y if you intend to make good the channels.

This Estimating Calculator is not linked to the Specifications.


  • Use the Floorboard Lifting for Installations Estimating Calculator when fitting pipes into floors.