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Installation Guide for Oak Flooring Direct

Pre Fitting Instructions


It is necessary that the flooring to be laid is left to acclimatise in the packaging (at room temperature) for at least 48 hours, lie horizontal and flat at the ideal relative humidity level of 45%.


The room should be dry, if the building is a new building with a concrete floor, wait until the floor is completely dry.  The flooring should be laid at a minimum room temperature of 15c and a maximum of 22c.


The greatest possible care is taken to produce your floor.  However, we advise you to check the boards for visible defects such as damage and deviations in shape or dimensions.  No complaints regarding these visible defects will be considered after the boards have been laid.  Make sure you have good lighting while laying the floor.




The Engineered 20mm thick flooring can be laid over a variety of surfaces (concrete, plywood, joists) and even over existing level wooden floorboards.  Sub floor must be dry, level and with good load-bearing properties.  Moisture content of floorboard subfloor should be 9% (with a tolerance of 2%).  You should first check that there are no loose pieces, should any be found, these need to be screwed down.


If the base is concrete, its humidity should be less than 3% and the mortar should be evenly set.  If the floor is to be laid in a new building, the rooms should be enclosed with the windows closed.  All wet trades should be finished and the relative humidity in the premises should be between 40% and 64% - the humidity of the plasterworks and paintwork should be less than 5%.


The Engineered flooring is generally compatible with the most common water based under floor heating systems (check with your supplier for further details).


Floating Floor Installation


  1. Start with a clean, level floor which has the appropriate humidity for installation.  To improve sound insulation and enhance walking comfort, a foam underlay should be laid at right angles to the direction of the floor being laid.
  2. If laying over a concrete base, it is recommended that a polythene membrane* is laid first and the moisture content of the concrete must measure no more than 8-10%.  *only applicable to floated floor installations
  3. For best effect, boards should be laid lengthwise pointing towards the incoming light (eg. From a window). Plan to lay the first two rows of boards from left to right, grooved edge to the wall, with spacers between boards and the wall as well as both ends of each row.  Allow for a minimum of 15mm expansion gap around the outside of the room. 
  4. If the wall is not straight or is uneven, scribe and cut the boards to the contour of the wall.  To complete the first row, measure the length of the last board (including the spacer) and saw to size.
  5. If the off cut from this board is 40cm or more it should be used to begin the next row.  If you do not have an off cut begin the next row by cutting a new board into two uneven lengths and use one to start the second row.
  6. Use a plumb line to ensure that both rows are straight and when satisfied proceed to glue.
  7. Apply PVA adhesive to the tongue and end butts, it is important to use adequate adhesive.  Using the tapping block and/or pull iron press the joints together and allow the first two rows to settle and adhesive to dry before proceeding further.
  8. The rest of the floor can now be glued and laid.
  9. Ensure that the boards are all laid straight and even, leaving spacers at all edges (these will later be removed and the space created covered by skirting and/or beading).
  10. It is usual for there not to be space to fit a full width board at the last row so it will be necessary to make a longitudinal cut and the cutting of this last board may be helped by simply using another board as a scribe and cutting guide.
  11. Press the last board into place with the pull iron remembering to put a spacer between the board and the wall.
  12. Allow 12 hours for the glue to set.  Remove all spacers to leave the expansion free.
  13. The skirting board which covers the expansion space and gives the finishing touch to the installation, can now be fixed in place (to the wall only and not to the floor).


Alternative Installation Method – Fully bonded to sub floor


Engineered 20mm thick flooring can be glued directly to the chosen substrate.  Preparation of the subfloor should be the same as above.  A suitable flooring adhesive must be used and advice taken from your supplier.


When choosing to fully bond down onto the sub floor there is no need to glue the tongues of the boards with PVA.  It is recommended that a flexible adhesive is used as this will reduce the stresses transferred to the subfloor by the natural movement of the timber floor.


Please seek professional advice before proceeding with this installation method as it is difficult to rectify any problems once the flooring has been laid.


Alternative Installation Methods – Secret Nailing


Where the subfloor is of wooden construction (joists, plywood, floorboards) the engineered 20mm thick flooring can be nailed directly to the subfloor.  A suitable length flooring nail must be used in conjunction with a manual flooring nail gun ie. Porta-Nailer.


Please refer to the operating instructions of the chosen nailing apparatus for advice.





  • Vat Number: 128064229
  • Company Reg: 07516735

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