Paul,
Macerated Paper, is used as a retro-fit insulation system over here, in tight roofs, where it is "not possible" to crawl in to install Pink Batts(fibre-glass).
The thing is though, these installers, would fill the whole damn roof space up, if they had their way, they just blow this stuff anywhere.
I think that they work under the proverb "Any
insulation is good insulation!". [Linked Image]