<b><b>Apparently, in a well insulated home, the heat output of the family moggy can play a significant part in warming the living room. Our sceptical Walrus wants to test out the theory</b></b><br><b>The long run-in to the new Part L has whipped up a feeding frenzy of seminars and workshops for building industry event organisers. From these I have learned that what is wrong with housebuilding in the UK is that, despite our fine traditions of sportsmanship and fair play, we are not currently at the top of the European U-value League. It seems that many of our continental counterparts can &amp;“do&amp;” energy efficiency so much better than us. </b><br><b>For instance, for reasons that can only be described as blindingly obvious, in the lands of the midnight sun and the arctic wolf, higher standards of thermal insulation are often achieved. Typically, by conference coffee-time, industry attendees are invited to hang their heads in shame and contemplate mid-table mediocrity with the likes of The French, The Dutch and The Germans. (It may be little comfort to the true fan to know that we are uncatchable in the league table for fuel poverty-related winter deaths in uninsulated older dwellings.)</b><br><b>Another recurrent theme on the …