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dontbelieveawordofit
i wasnt touting for work. just thought i may be able to recommend someone if you were closerThanks for the responses.
I live just outside Holywell, bennymultifinish. Why, are you a plumber? You sound more like a plasterer, if your name's anything to go by.
Ianmcd, on reflection I'd concur that MyBuilder probably isn't going to yield anything useful. Last time I tried them I received some very strange replies, none of which inspired any confidence in the likely ability of the respondents.
jonbey, I agree that better insulation would help, but the work involved and the loss of space is something I'm simply not prepared to countenance. I'm looking to take the chill off that room in winter rather than actually make it warm.