Partition wall insulation

Today I started dry walling the last wall of our house (the garage side of the partition wall). The last few days I put insulation in the wall cavities, although it’s a wall between two heated spaces building code requires minimum R-20 insulation, because it separates a living space from a garage. It works in our favor anyways because this green insulation is great sound reduction, and we can also lower the garage temperature to save money and store food in there.