I'm building a small frame house with my own hands, I do everything efficiently and with love, it's time to insulate, I bought 20 packs of Rockwool Light Butts Scandic Density 35 kg / m, the trailer is not big and it didn't fit anymore, after opening I was shocked by the insulation of the declared thickness, there is no density like cotton wool. I have a hand to spoil my house with such insulation will not rise. Don't make my mistake. It's not insulation