Description : Some swear by 10, some swear by 15, even 20 have risen in me. It is a question of how much difference there is between them in terms of heat and sound insulation.
Last Answer : I just talked to someone about this. The fact is that the thicker the insulation material, the better the insulation. Since all work processes are the same with thin insulation as with thick one, the ... for the thicker one because it's an investment for life that will only bring you money.