They used ISO super 9 style foil/fleece insulation in a loft conversion on DIY SOS last week. It appeared to be stretched over the loft rafters leaving 50mm-ish gap behind, Then battens (38mm looked like) nailed through it onto the rafters, and plasterboard over the battens. Thus leaving suitable air gaps etc, but where it's squashed by the battens the insulation must be poor. But you get a much thinner roof than with celotex. Seeing a neighbours loft conversion where you could hardly stand up a while ago, made me think. And what about using it in normal roofs. If it's evquivalant to 75mm celotex, my extension roof design could be a lot thinner. Is this stuff proven, and would the BCO pass it ? Simon.
- posted
17 years ago