Building: Rehabilitation centre Wiejce Castle, near Miedzychod
Designer: Zbigniew Cichocki
Investor: Constructa Plus Ltd.
General contractor: Constructa Plus Ltd.
Sub-contractor: SZLIF Grzegorz Glazinski
Area: 1100 m2, two storeys
Time limit: 2003-01-01, 2003-06-30
Materials:
- primer (Bona Bond S520)
- glue (Bona Bond S760)
- priming and backing varnish (Bona Bond D-5, DD-504)
- laminated parquet
- parquet
- mosaic
PREPARATION OF SUB-FLOOR
We began with measuring the humidity of concrete, which oscillated between 0.7 and 1.6%, the humidity of laminated parquet and oak parquet (7-9%), the humidity of air (45-55%), and the floor temperature (15 C).
The remains of paint and glue had to be removed from concrete floor with the use of Columbus polisher and stones of 16mm granular structure. Having done that, primer (Bona Bond S520) was applied in order to toughen the floor.
INSTALLING LAMINATED PARQUET – PARQUET – MOSAIC
The next step was to mark out a pattern with a use of a chalk line. Marked lines make it easier to apply glue precisely which then makes it easier to install laminated parquet, parquet and mosaic.
Installed laminated parquet had to be rolled with a roller weighing 80 kilos in order to press well all the fuses to the floor.
Three days later, parquet and laminated parquet was cut (35m from a wall) with a use of work support blades and Festool angle blending machine. At rounded places we had use Festool shaper and Wollf dividers which with a throw out has a 7 metre long radius.
INSTALLING EDGINGS
Fuses on edgings were laid doubly along walls. In some places, black oak stripes of 0.5mm-10mm length were installed on the sides to accentuate the edgings. In apartments and ball hall we laid boards to had to be separately cut in the shape of a circle, we used board 5 cm wide and 130 cm long which were stack together. Then the boards were cut at a given angle and milled to form a circle.
SCRAPING-VARNISHING
Two weeks after installing edgings we moved on to scraping. We used abrasive materials of the following granulation: 24, 40, 60, 80. The surface was stopped with a sheet metal plate. After that the surface was scraped with abrasive paper of 100 and 120 granulation. Tiger and Janser machines were used for scraping. At the sides, the surface was scraped with a rotationary grinding machine (RAS 180,03 E-AM, FESTOOL) which guarantees dustless work and ideally smooth surface. Finally the surface was polished with one-wheel Columbus polisher. For that purpose we used rollers of 100 and 120 granulation.
The contractor’s wish was to use hardly flammable varnish with necessary attests. That is why Bona Bond D-5 varnish, which was applied with a bolster and when it got dry it was polished with a polisher with rollers of 220 granulation. Before second layer of varnish was applied, the whole floor was cleaned. Then with a bolster, we applied two-component polyurethane Bona Bond D-5 varnish.
The last varnishing was proceeded by polishing with rollers (220 granulation).
Our work was divided into few stages because we had to wait till other contractors finish their works. The longest break lasted eight weeks.
We pay a lot of attention to professional tools and equipment due to which we can work solidly and quickly.
