First off hi to DIY forum as this is my first post here. Ok did some searching but cant find the info i need So can anyone give me perhaps.. a post link on this site / web address , document link or even the formula for working out the cost benefit in terms of heating cost against increase in R value. ie is there a way of working out how much each 0.1 increase in R value actually costs or saves as the case may be in a typical room.
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