Is there any single site that lists for comparisom the insulation value of all the available types/makes and ideally these claim everything plastic layer types which "claim" to be the equivalent of 170mm of glass fibre?
Another problem is that the makers seem to state results in units which add to confusion. I would expect heat loss to be stated in watts per square meter per degree.
Tony
Another problem is that the makers seem to state results in units which add to confusion. I would expect heat loss to be stated in watts per square meter per degree.
Tony
