Tilt window coil balance spring
A home owner from Philadelphia, Pa says:
June 30, 2016
What is the formula used to determine the correct tilt window coil balance spring weight, i:e: as you would by weighing the window on a weight scale ?, Thank you
Paul from SWISCO responded:
July 1, 2016
Yep, you would weigh the sash on a scale and then divide that by how many springs you have in the window. For example, if you had four springs total (two on each side) and a 12 pound sash, you would want four 3 pound springs.