I am in a 1940’s house that unfortunately has pvc windows – I am clueless about this sort of thing and have had Marvin in to quote – I am still waiting on their estimate but I know they are pretty expensive – he mentioned a figure of 20k!. I see from posts above Dansk is mentioned as a cheaper but as good alternative to Marvin – has anyone anymore info on this company? ? I am hoping to get aluminium clad cream windows (don’t shoot me – most of the road have these and they look great) Can anyone else recommend agood window company that do these or any window company at all? I am so desperate I am just googling everything and flicking thru the yellow pages………..whilst googling I found this site and registered in order to ask your learned opinions! Any info at all would be appreciated – save me from my pvc windows!