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Well, the thing about doing a renovation like we want to do, a deep energy retrofit, is that it requires planning. Lots and lots of planning, and what planning really means, apparently, is spreadsheets. Spreadsheets that log your current energy use, spreadsheets that predict your future energy use, spreadsheets that model the heat loss of your thermal envelope and the heat gain of your windows, and of course, a spreadsheet that keeps track of where the dollars are going to go. So before the first stick of lumber is cut, there are many hours spent at the computer with the excel, and with a CAD program getting the planning done. Thats what we have been up to, which doesn’t lend itself to many exciting photo ops, but there is this:

A section of one of the exterior envelope options we are looking at.