When we moved in the previous tenants (college housing, seen better days) had stuffed something between the sash window panels to keep out the draughts.
It's a really draughty house though as its a town house actually we do ok with neighbours both sides. Just need to deal with the windows especially as we have no heating except 1 gas heater in the kitchen (????!) and it's a 3 storey house.
I want to insulate the Windows a bit like my parents did when we didn't have double glazing when i was a kid. :)
I've found one link to this here:
Has anyone used this stuff? Recommendations if you have please? Student budget and rental house so pretty limited in what we can do.