Making an energy efficient building, is, at its heart, a fairly simple affair. Insulate the envelope well to minimise heat loss, cut openings, add site-specific technology to provide heating and power. Of course, as you get into the detail it becomes more complex, but this is the driving principle of making a building which is comfortable to live in and affordable to heat. Since heat rises, a roof that works really hard will have a more positive impact than heavily insulated walls and floor; a roof light with a U-value of 0.7W/m~2Kis roughly equivalent to a window the same size of 1. 2W/m~2K. Having a constant line of insulation that is not disrupted by the structure is a fundamental principle we apply to all of our projects.
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