We still have the original single glazed windows through a lot of our house (Victorian terrace). Two big bays, two sashes. In the sitting room in particular it is SO draughty you might as well be sitting in the garden.
We can’t currently afford the thousands it would be to renovate existing sashes / add double glazing, we don’t want to switch to upvc .
I was considering those stick on / DIY panels but do any actually look good / in Keeping with the age of house? Has anyone added them successfully in a period property? My ILs have some that look awful - huge plastic surround clunky looking things - which we definitely don’t want.