| Density
Densities indeed. Ben, just in case this has reintroduced Confusion-
use Fibre with a density of 3 pounds per cubic foot for SSChunks.
This is 48KG/Cubic metre. There are often cheaper alternatives to 703.
I used Isover Ultimate. If you can only get stuff with foil on it, take it off.
If you go for straddles 3 pcf is fine also. 5-6pcf will work fine too if you need the stiffer, easier to handle panels.
DD
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