The seals now are pretty good, they gaurantee them for 5 years. It was the Sash Window Workshop - sorry got that wrong! http://www.sashwindow.com/I think they do glazing/replacement as well, i just went for the simple (cheap!) resealing option. They were very clean and tidy too, all in all i think it took 2/3 hours
Tom Clifford ● 4628d