IncStores Pre-Cut 100 Square Foot Rubber Underlayment Rolls For Hardwoods, LVT, Laminate & Engineered Wood Sub Floors (2mm 4'x25') Can be used with tiles, LVT, laminate, engineered & real wood. Do not use with vinyl, VCT, or linoleum. Can be adhered with nails, polyurethane, staples, or double sided tape. Antimicrobial added to prevent the formation of mold and mildew. Made from over 80% recycled material.