i used cheap play mats from tesco on my floor, it certainly makes a difference not only on warmth when your doing low level stuff such as painting the bottom of a cabinet, but also it's something to kneel on and it makes standing around on there a hell of a lot more comfortable.. i could easily spend all day in there with no worries. i know they are not on offer at the moment but there are some deals to be had on ebay if you look.

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