How to calculate old sash window weights

1827 Views 4 Replies 3 Participants Last post by papereater, May 11, 2020

papereater

Discussion Starter · May 10, 2020

People,

Restoration project, was installing a restored double hung window sash into the frame, and discovered that 2 weights are missing inside the wall. So I wasnt sure if they were for the top or bottom window. I weighed both sashes:

Top window= 13 lb
Bottom window = 15.5lb

The 2 weights are 14.4lb BOTH.

So, do weights have to be 100% exact for a sash? Would you use the 2 weights for the top or bottom sash? Then, what weights do I obtain for the remaining?

Thanks, people.

Save

1 - 1 of 5 Posts

joed

· #4 · May 11, 2020 (Edited)

The top sash weight should be a bit more than the sash to hold it up. If it is less than the sash, the weight of the sash could let it fall down.
Opposite for the bottom. The weight should be slightly less than the sash so the window will stay down.

In your case 14.4 should work for either sash. They are a little heavier than the top and little lighter than the bottom.

Save

Reactions: 2

1 - 1 of 5 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month