Warmup Dual Overlay System 2.88m²Warmup Dual Overlay is a free-floating system designed for use over the Warmup Foil Heating system. It provides a smooth and seamless subfloor, suitable for soft and resilient floor coverings such as carpet and vinyl. It comprises of two self adhesive layers that bond themselves together to create a smooth floating floor deck over the Foil Heating System. Installation is quick, clean and dry, making it an easier option for installers as there is no need for leveling compounds. The low thermal resistance, evenly distributes the heat, reducing any hot or cold spots as the heat passes through to the floor finish. The system consists of a base board and a top board. Both boards are provided with a contact adhesive, bonding them together to make one continuous subfloor, ready for the floor finish to be easily laid over. The system is available in two formats: Warmup Dual Overlay (WDO) is an MDF based product. It is designed for use within dry rooms and provides an ideal sub-floor for all resilient floorings such as vinyl, carpet and bonded parquet flooring Features: Easy to cut and shape around fixtures with a knife or saw. Provides a stable subfloor on which a variety of floor coverings can be laid. Consists of a base board (3mm) and top baord (4mm) with a contact adhesive to bond them together. Very thin at only 7mm in depth. Protects the heating element from damage if flooring is not laid immediately. Installation is quick, easy and dry - no need for self-levelling Provides even heat distribution. Tech Specs: CONTENTS: 4 BASE AND 4 TOP BOARDS (COVERS 2.88²) SIZE: 1200mm x 600mm THICKNESS: TOP BOARD: 4mm, BASE BOARD: 3mm, TOTAL THICKNESS: 7mm, TOLERANCE: +/- 0.2mm/7mm COMPOSITION: MDF, FITTED WITH AN INTERACTIVE ADHESIVE DENSITY (kg/m³): 770 BENDING STRENGTH kg/cm²: >40 HUMIDITY (%): 4-10 THERMAL Rm VALUE [m².K.W.-¹]: 0.047 TOG: 0.5 FIRE CLASS EN13501 (2mm Vinyl): Bfl FIRE CLASS EN13501 (2mm Linoleum): Cfl