A metal building insulated with spray applied polyurethane foam will provide a quite and comfortable environment and will provide you with cost savings on your energy bills.
Polyurethane foam is the highest rated insulation product on the market. The spray applied system not only provides a high "R" value but it fills the cracks or gaps providing an air and moisture seal. The seal provides a dual benefit - it will prevent drafts and keep the conditioned air inside, the unconditioned air outside.
Polyurethane foam also provides a noise insulation benefit with the same principal.