Comments for Super, Super Efficient Windows at http://www.ecogeek.org , comment 1 to 4 out of 4 comments http://www.ecogeek.org Wed, 19 Jun 2013 23:40:13 +0100 FeedCreator 1.7.3 http://www.ecogeek.org/architecture/3803-super-super-efficient-windows#comment-47395 I'm not an expert, but this is very interesting. I also found this - roof froom tiles, that absorbs sunlight and the energy is used for heating! - http://igreenhero.com/glass-tiles-to-heat-your-house/ - Aglika Mon, 08 Oct 2012 07:02:23 +0100 http://www.ecogeek.org/architecture/3803-super-super-efficient-windows#comment-47277 Or simply stick with the 2x4 construction adding the R-15 insulation and than make a 4" thick window with a rating around R-24. Of course, that is if you can't afford the 6" model, which would definitely be optimum. - Richard Tue, 18 Sep 2012 19:59:19 +0100 http://www.ecogeek.org/architecture/3803-super-super-efficient-windows#comment-47274 I suggest comparing insulation value for 2x6 wall(R-21, typical) since the window is 6" thick. interesting technology. Thanks for posting! - Tom Tue, 18 Sep 2012 16:24:21 +0100 http://www.ecogeek.org/architecture/3803-super-super-efficient-windows#comment-47214 R38 is amazing even though R11 for a 2X4 stud is the cheapest fiberglass insulationg you can buy. High density R15 is available to use in a 2x4 frame wall for a relatively small premium over R13 and R11. - Voltair Mon, 10 Sep 2012 13:43:33 +0100