I've got some 10mm thick insulation. Its sound insulation for between concrete floors . It can be used in walls , dog kennel / rabbit hutch? . It's yellow .
It was from a job I was on a few years back and they had loads left over . Approx 5m square.
10 mm foam Insulation (Norcross FY5)
This offer has been gifted to someone and is no longer available.