So yesterday I started (because in the end we did not have enough raw material) to almost free of charge to isolate the floor of a lost attic thanks to about 2 years of "shit" storage: plastic bags, polystyrene packaging and other bullshit ... and styrofoam scraps... In short, it's direct recycling in isolation! It is crazy the volume of stuff that we have accumulated and yet we do not force on the CONsommation (well there is a lot of airbag protection bag from suppliers).
The trick is based on the fact that there is a lot of air trapped in this kind of waste and that this diagram shows that a vertical air gap of 40 mm is the optimum in terms of insulation. So it is enough to try to maintain air in air pockets of 30 to 40 mm to obtain a "good insulator":
So I made a pile of 30 to 50 cm (it depends on the location and the type of waste) of plastic and chemical waste of all kinds. So obviously it's not worth 25 cm of "real" insulation (although ...) but it's 100% free and it reduces waste (ultimate for some). It's also limited to (really) lost attics ...
I was missing a bit of "material" so I would go on and add a little layer later!
Well it's a little messy but hey we're boring!
ps: by the way if someone has a method (simple and accessible) to determine the real R of an insulating material ca interests me!
