9 Feb 2012: Your loft may have been insulated, but has the insulation been tucked closely up against the rafters and other edge conditions - or are there gaps showing? This thermographic photo tells a story.
This loft has 400mm of insulation off to the left, and in the foreground, it is 200mm of insulation with boarding over. Both of these are effective, but the junction between needs looking at. Where they meet, there is an awkward gap, with plenty of heat leaking up into the loft space.
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