Question: how much does it cost to insulate a solid wall?
Answer: If a standard R1. 5 (this is around 75mm thick and is suitable for most jobs) is used and your wall studs are evenly spaced at 60cm, you can expect to pay between $5/m2 and $6/m2 for the job. This will cover the installation as well as the materials. Meanwhile, acoustic wall insulation rates start at around $8/m2.