INSTALLATION OF 2-LAYER ENGINEERED FLOORING ON THE CONCRETE BASE

It is recommended to bring the unsealed boxes with flooring into the room and keep them inside for a certain time. The hardwood flooring has to have the room temperature.

Floor preparation and priming:

• The subfloor has to be dry, solid, dedusted and free from any impurities, i.e. oil, old paint, putty and other stains that can impact the adhesion quality.
• To improve the adhesion, it is necessary to prime the subfloor. It is recommended to use the fastening deep treatment primer.
• The make-ready primer is applied to the prepared subfloor by brush or applicator roll.
• The following decoration works to be carried out after the complete dry-out of the primed surface (2-3 hours under normal conditions).

Marking:

• It is strongly advisable to start the flooring installation from a distant room, laying the boards away. Thus, you can avoid the further damage of the already installed flooring.
• Define the laying angle. It is recommended to lay the flooring at an angle 90° along the longest wall or diagonally.
• To prevent the flooring boards deformation along the perimeter of the room, it is necessary to leave the expansion gap of not less than 10 mm between the flooring and walls, thresholds, doorways and stairs. Make sure that the expansion gap will be closed later by baseboards.
• Using the chalk line, mark the base line parallel to the support wall. The distance from the base to the wall has to be equal to the expansion gap width.

Before laying the flooring boards, it is necessary to match boards in colors and texture to find the best stylistic decision. Boards color and texture matching helps to install the uniform and well-balanced floor.

Adhesive application:

• Before applying, the adhesive has to have the room temperature.
• Before applying, mix the adhesive thoroughly until homogeneous.
• To apply the adhesive evenly, a trowel has to be guided at an angle 45° in relation to the floor.

Installation of the first row:

• Using the special notched trowel, apply the adhesive to the base, covering the total width of 2-3 planks. Install the first row on the base line from left right. Doing so, the board tongue has to lay in the direction of the center of the room, and the groove has to face the wall.
• After the installation of the first row, put the wedges so as to create the expansion space.

Installation of the following rows:

• Install the following rows, matching the tongue with the installed plank groove, pushing the installed plank towards the base.
• To minimize the planks outgo, choose the longest plank to be installed at the row end. Thus, cutting the longest plank, the remains can be installed as the first plank in the next row.
• To prevent the “aligned joints” pattern make sure that the first plank in the next row is at least 150mm longer or shorter than the first plank of the precedent row.
• Cut the planks so as lateral joints lay randomly with the shift of not less than 400 mm relative to each other.
• It is necessary to mark and drill the apertures in the hardwood flooring in places where the tubes for the central heating system will be mounted. The size of such an aperture has to be 10 mm bigger that the actual tube diameter;
• The last row plank to be measured using the tape measure and trimmed in size so as to provide the expansion space of 8-10 mm from the wall or ledge;
• When installing the last row, measure the width using the tape measure and cut the last board lengthwise in such a way that the expansion gap is 10-15mm from the wall or ledge.