"There are quite a few products of this kind on the market but this is the best I've come across. It is thicker and stronger than cheaper brands and has been made to a recognised specification. The manufacturers claim it is as good as 55mm of polystyrene so if you are in the market for some of this stuff check your supplier can match this. I used it along with rock wool to insulate a ceiling and wall. It was easy to use and the benefits were felt straight away in terms of heat retention and improvement in sound proofing. To fit to wood and breeze block I loaded my staple gun with 14mm staples and I had the job done in minutes."
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Review 3 for Thermawrap Loft Insulation 600mm x 7.5m
"Very expensive compared to some of the larger size rolls that are available under a different brand name. These 600mm wide rolls are not wide enough to get good coverage in a loft area, instead check out the 100mm and 150mm wide rolls of exactly the same stuff but are marketed at cavity wall insulation, way cheaper, and being wider means less work."