5mm thickness: Offers good cushioning, tack-holding, and insulation. 48 inches wide x 52 feet long: Intended for large installations or commercial use. Soundproofing / Acoustic Underlayment. Used under flooring (like laminate, hardwood, or tile) to: Reduce impact noise. Improve thermal insulation. Act as a vapor barrier when paired with appropriate membranes. Common in apartments, condos, studios, and commercial buildings. Gasket Material The thickness (5mm) can be useful for industrial applications, where cork is used for vibration dampening or gaskets.