Posted 2011-03-10 09:21 (#594) Subject: Double glazing in historic buildings
For anyone who is tearing their hair out trying to put double glazing in a listed building, I came across some people called Histoglass who do really thin double glazed units, see http://www.histoglass.co.uk/ . I've no idea how much it costs - and their promotional literature certainly looks very expensive - but it looks very elegant.
Posted 2011-04-07 13:54 (#646 - in reply to #594) Subject: Re: Double glazing in historic buildings
I made contact with these people. An elegant solution as Martin says but they don not retro-fit existing windows so it does mean replacing them completely. There are other people too who offer something similar - including a supplier here in Cromarty (of Canadian windows...) - you can see these installed at the Salmon Bothy on Cromarty Links by the car park and very good I think they look.
I don't know why the planners were so insistent on single glazed windows in my house - the ones I took out were 1970s ones and nothing like the originals. Still they did require them despite my objections, so I will be putting in secondary double glazing when I can afford it.
Historic Scotland don't like secondary glazing and recommend traditional wooden shutters, which have a very low u-value, but of course when they are closed they keep the light out as well as the heat in!