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polystyrene u values, concrete floor

approximately twice that of PIR/PUR - you haven't been listening have you freddy

@ hotrod :evil: :D

I think someone's told the new boy that a test of first posting is to come along and spin the biggest load of old *******s and try to get people to swallow it.

If a piece of insulation - 100 mm say - has an R value then it has a derived U value
 

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