Dave Liquorice wrote:
On 26 Mar 2006 20:10:00 GMT, Ian Stirling wrote:

It is if bought to save energy. However, it has other advantages.

It does?

Less chill from the window.

Less - maybe no - condensation.

Less - maybe no - draughts.

Less noise from outside.

I find the OPs request a hard one to call. And those that have mentioned
doing the CH over seriously drafty windows I feel have never lived in a
place where the medium to heavy weight curtains literally do move in the
wind. When it's windy here, the curtains move and if it's below 5C

Then again - you can fix that fairly trivially.
Worst case, tape up the windows.
Slightly less bad - masking tape over one half, bead of silicone on the
other face, close, leave a couple of days.