ARWadworth wrote :
From the post with the title "Between-floor insulation" there is a link to

http://www.screwfix.com/search.do;jsessionid=1TKB24B535ZJYCSTHZPCFFA?_dync harset=UTF-8&fh_search=foil+tec

It says in the review that it encourages heat to rise. Can someone tell me
what I am missing out on here as I thought heat did rise.

It does, but the idea of this material is to bounce radiant heat back
up through the floor rather than dissipate itself under the floor.

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Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk