Y'all Know How To Do This

[rebapuck]

Problem: The top sash, of my double-hung windows, slide down a bit when I unlock them. Then, to lock again, I have to get a pole to push the sash up so the lock lines up.

How can I, easily and neatly, keep that sash on place? These are newer windows with the plastic tension jambs.

[Dean in Eureka, CA]

Plastic tensions jambs...
Know what brand the window is?
There's most likely a spring loaded cord with a stainless steel hook, which atatches to the sash. (Called a sash balancer)
Obviously the weight of the sash is heavier than the rating on the sash balancer.
Do the windows have insulated glass in them?
If so, did you recently have a broken sash glass replaced?
(Maybe thicker glass was used, which would increase the weight)
I've been away from the glazing trade for two years now, but do remember seeing this situation on new retrofit packages designed to replace older wood sash double hungs, which included two new sashes and the jambs which had concealed sash balancers behind the visible jamb.... Can't remember the manufacture's name though.
If you had them installed, I'd get in touch with the installer... He has access to the manufacturer and hopefully, they offer a higher rated balancer.

[rebapuck]

They are double glazed. New windows in an addition. Pretty sure they came from Lowes so I should go there and ask. Thanks.

[Dean in Eureka, CA]

Something else... Be sure to let them know the width... i.e. wider means more weight for the balancers to handle.

[southpennrailroad]

All I do is repair windows. My livelyhood. In a pinch a pointed vise grips will do but take the end of the spiral balance and turn it one turn counter clock wise to gain tension. and then replace it back in the balance shoe. If it is the new constant force balance then only the instalation is not enough pressure on the sash from the sides. put more shims on the center sides. Like holding a piece of wood with open palms. Constant force balances have not adjustments.