• Improved sound insulation (△Lw=10 dB with 2.5 mm LVT floor products) • High grab, pressure sensitive adhesive under a removable protective film for easy installation. • Suitable for underfloor heating and cooling • Provides excellent dimensional stability • Suitable for Roller Castor Chairs & rolling loads up to 250kg Xtrafloor® Flex Pro can bridge small gaps of a maximum 3mm wide and 2mm deep. This allows for installation over existing floor coverings, such as ceramic tiles, linoleum, compact PVC floors, chipboard and wooden floorboards. LVT floor products installed on Xtrafloor® Pro is a “floating” floor. Therefore, a 3mm expansion gap must be incorporated at the perimeter of the room/area for the underlay and 1.5mm to 2mm for the LVT. For smart solutions to cover the expansion gap, see ‘finishing your floor’. For the installation of Xtrafloor® Flex Pro, lay the sheets butted, edge-to-edge, at a 90 angle to the laying direction of the new floorcovering. Xtrafloor® Flex-Pro is to be laid PET Film side up. There is no need to fix one sheet to another. Separate the PET-film from the underlay sheet and begin laying your new floor according to the fitting instructions. Do not use tape or adhesive to fix the underlay. Please see the full Xtrafloor® Flex Pro Underlay installation recommendations.