Wanted to ask about the roof you were talking about some years ago. In ours the roospace opens out into a small pitched roof, and the opposite side has a soffit vent running the length (6m) of the soffit and this part of the roof overhangs about 2m to form a shelter over an outside space. Shouldn't the section above the room have been blocked to avoid cold air flowing underneath the new insulation?
Not putting this on forum as I do not want to upset that Yale expert.
Are you sure the boiler has not been running even though the rooms are already hot from the sun ? I have a reason for asking.
A friend ( retired Home Office radio engineer ) was asked to look at a faulty home automation system. Poor temperature control was one of several problems. He found there was a lot of blocking of signals from a nearby farm security system gate alarms. ( 433.92 MHz and over 200 yard range ). The only fix was a hard wired over ride system to force the boiler to OFF if the wireless system lost control of the boiler. He has suggested to the manufacturers that the boiler should shut down if it has not received an ON command for 5 minutes and the controlling thermostat / timer should send an ON command to keep the boiler running when needed. The reply was the transmissions would shorten battery life. He wants other examples to add to his data to further the matter.
Previously has has found baby monitors have compromised other licence exempt equipment in domestic situations.