Pipe insulation types – most effective?

[Adrian ColesParticipant]

Hi – I will hopefully be moving shortly to a 1960s house that will inevitably require some improvements. I was wondering if anyone had any data/insight on pipe lagging, and which types were best.

As an example at a major DIY catalogue (rhymes with dew-bricks) there are:

economy polyethylene foam – 13mm thick
premium poly foam – 25mm think
spiral wrap foil – claims to be equiv to 33mm polystyrene

My thinking was to use one of the foam types and then wrap in the foil wrap. Is this a viable method or do the foils have to be next to the pipe to reflect the radiant energy straight back.

Are there any other interesting methods/products that people have used? (e.g. is it worth using any spare bubble wrap from packaging to increase lagging of pipes outside the foam products?)

Thanks in advance,

Adrian

[Author]

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