thread: Tectum Finale
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Old 9th June 2009
Gear Guru

Hi Alanwes, there are many many fibre insulation products. SheepsWool, Hemp, Recycled Cotton, Rockwool, Fibreglass and so on. Given a similar density they will all do they job.
Take a look at

Note that 703 has a density of 3 pounds per cubic foot.
To go metric multiply by 16 i.e. 48KG per cubic metre.

In general-
Rockwool is often used at higher densities. 100KG is common for a rigid board.
Fibreglass is more rigid, Rockwool is floppy.