This week’s Ask The Craftsman question comes from Mark.
“I want to replace some missing ropes on my home’s original windows. How do I measure the right length rope for double-hung windows?”
Mark, I try to avoid breaking out the tape measure as much as possible and this is one of those times you can avoid it as well. Here is a quick and easy trick I learned from my friend Steve Quillian at Wood Window Makeover.
Take one end of your sash cord and place it at the top of the pulley on the jamb you are wanting to re-rope. Holding that in place, run the rope down to the window sill. Mark that length with your finger and cut the rope right there.
And that is how to measure sash cord!
Knot one end and run the other end through the pulley down into the weight pocket and you should have enough rope to tie off the weight properly.
This measuring trick does not work on short windows. Typically any window shorter than about 3 ft tall will require a few extra inches added to the rope.
If you have a short window measure like I mentioned and add at least 3-4 inches to the rope. You can always trim off a little extra once the weights are tied off.
For more info on roping windows see my earlier post How To: Re-Rope Old Windows