Spline selection

by Bill Karr
(Bradenton, Fl, USA)

Question:
How does one select the correct spline? I replaced screening on a pool enclosure door. The old spline was flat. I found it extremely difficult to insert new flat spline in one area of the door and wondered if a round spline should have been used. Can the type of slpine required be determined by examining the spline slot? If so and round is required, how does one determine size and smooth or ribbed spline.

Answer:
If the original door used flat spline then you need to use the same spline to replace it. Some enclosures from the 1950's and 60's use flat "glazing vinyl" instead of the round spline we use today.