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Blog post from Self Build, Renovate or Convert Your Own House | Renovation | Home Building & Renovating UK

Energy efficient glass for old sash windows

Energy efficient glass for old sash windows

Posted by Mark Brinkley on 4th June 2009

I came across one new product at BRE’s Onsite 09 event, which was a new type of energy saving glass being marketed by Pilkington. It’s made in Japan, by Nippon Glass, owners of Pilks, and it consists of a two panes of glass separated by a vacuum gap of just 0.2mm. In this country, it’s being aimed fairly and squarely at the listed building/Georgian sash window market, because you get a very good U value from it (Centre Pane value 1.4) yet you can’t tell it’s not single glazing.