You might like to look at just including another layer of drywall with Green Glue sealant between the levels. The added mass of the drywall and the decoupling through the Inexperienced Glue really should help. These cookies empower strictly required cookies for safety, language help and verification of id. Adensa https://eye-liner78776.blogocial.com/the-best-side-of-diy-secondary-glazing-70326798