Has been a poser, but the internet can solve anything.

Step one: if the sash won’t lift easily, oil the track. We tried graphite. No go. What works: Peanut oil. Machine oil. Any fine oil. Lifts like a charm. Treat both upper and lower sash tracks. Move them until they move easily. Clean top sash.

Step two. lower the (outermost) sash. Clean.

Step three: removing the storm window screen. Raise the lower storm sash until you get past the little divot that lets you lift it out. Then lower the upper window storm sash until you can do the same. The screen lifts inward.

Clean and put back in reverse order.

Just one of those little art forms that gets lost in the rush of vinyl replacements. I never had to do this job as a kid. Now it’s taken me 3 years to figure it out. But I am glad to. We love our old-style wooden windows: we just want them clean!