How to Calculate How Much Beading Is Required

How do I calculate how much beading I need?


To calculate how much stop / staff bead you need:

  • Measure the perimeter of the window frame i.e. height x 2 and width x 2 of window. 
  • Add together then add at least 100mm on to each measurement to allow for a mitre cut.


To calculate how much parting bead you need:

  • Measure vertically from the sill to the head of the frame 
  • Multiply by two (as you will need this on both sides of the window)