Please refer to the under floor heating section if system is present or to be installed. Site Checks Before commencing installation ensure the requirements have been met for: Jobsite Conditions, Moisture Testing and Acclimatisation Acceptable Sub Floors Concrete, panel, plank, joists (20mm products only), tiles Installation Guidelines Choose a starting wall according to the most aesthetically or architecturally important elements in the room, taking into consideration fireplaces, doors, cabinets and transitions, as well as the squareness of the room. The starting wall will often be the longest unbroken wall in the room. Engineered wood floors can be glued or floated to the existing sub floor. 20mm thick products can be nailed to timber sub floors. Ensure a vapour retarder has been applied unless with the use of under floor heating. Careful attention must be paid to the maximum area of the installation. Do not float engineered floors where the dimension of an installation area exceeds 6m in width and 10m in length. If these dimensions are exceeded glue the flooring using Ted Todd’s MS Flex adhesive. For glue or nail installations where the maximum width exceeds 8m, extra expansion should be allowed in between the rows of the boards allowing 1mm of extra expansion for every meter exceeding the maximum width. For example a 10m wide room will require an extra 2mm of expansion distributed across the floor. Where possible expansion gaps must be left though doorways/archways and covered with T-sections to break up large areas of installation and a minimum expansion space of 15mm must be left around the perimeter and all vertical obstructions. Distribute lengths, avoiding 'H' patterns and other discernible patterns in adjacent runs. Stagger end joints at least three times the width of the boards, as product allows. For multiply engineered flooring there is frequently a bow within the board. This can be up to 25mm and therefore it is important to ensure that the first rows are laid with the boards being interlocked to around half of the length. This will ensure the boards lie flat and permit installation.