Lignum Addtions 3mm Comfort Silver Underlay - 15sqm per roll (4073) Silver Polyethylene - Bathshack
Dekorman Premium Plus 200 sq.ft. 43 in. W x 56 ft. L x 3.0 mm T 120 mil Acoustic Underlayment with Silver Foil for Laminate Floor 3ES200 - The Home Depot