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seen Jan 20 '13 at 17:27

comment What options are available for insulating interior walls myself with minimal damage to the wall?
May I mention that all effective insulations are based on trapped air bubbles. From the most expensive "Aerogel" with millions of tiny sealed air bubbles, to the likes of fibreglass and old newspaper products that are full of large open holes that let your heat race through to the cold outside. There is no way that a solid coat of paint a few thousandths of an inch thick can provide any form of insulation. It may bridge a number of small cracks and stop a tiny draft - but, it does not insulate. Sorry!