Insulation projection by projection for attics?

[dodo]

Hello,

here I come to contact boxes for the insulation of my roofs everyone offers me some cotton wool, but I have a box which offers me a kind of projecting a kind of polystryrene.


someone has heard of this kind of material.

[sspid14]

Help on insulation http://www.energieplus-lesite.be/energi ... _10241.htm

The polystyrene is made from petroleum but it is a good insulator with a lot of quality and above all easy and quick to apply by spraying therefore less expensive because less labor.

Cellulose wadding : https://www.econologie.com/la-ouate-de-c ... -3612.html