I have recently purchased a 1960s semi and was changing the downstairs light fittings when I felt a draft coming through the ceiling, connected the light fitting and thought no more of it. No the colder weather is settling in I have found that in the airing cupboard upstairs that has no carpets fitted just floorboards there is a draft coming up through the boards. Any ideas where the draft is likely to be coming from? Its usually not an issue but as I say now the weather is colder when upstairs you can feel the cold through the carpet, I was thinking its coming from the cavity where there are possibly electrical cable or waste water pipes been drilled through between the ground and first floor. Don't really want to be ripping carpets and floorboards to find its a waste of time. One other place I have considered is the kitchen area where we have halogen downlights, the kitchen area is cold as its part of the flat roof extension and we often get draft coming through the downlights on the flat roof and into the kitchen, just thought that maybe this draft is then being sucked up through the kitchen downlights on the original kitchen side and into the house.