Varnishing parquet

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Varnishing parquet: how to do it?

Parquet is a timeless furnishing solution, because wood is a living and organic material, pleasant to the touch, and if treated with the right products, it lasts long in the workplace and in the home.To preserve its beauty, resistance and impermeability, finishing treatments take place through three processes: varnishing, oiling, waxing.

In particular, the varnishing has the purpose of protecting the parquet over time, keeping it safe for example from water, fire and dirt, and to ease the cleaning.

The varnishing of the parquet: the requirements of the varnishes

There are specific requirements according to the field of use. In public spaces, for example, it is necessary to opt for paints that offer high resistance to fire, or that slow down its spread, in line with the European standard UNI EN 13501, and that increase the resistance of the wood to daily foot traffic.

In general, a painting product must be chosen on the basis of specific characteristics:

  • Covering power: the paint ability of covering wood porosity while still allowing a glimpse of its grain.
  • Adhesion: The ability to adhere to the wood or underlying finish.
  • Penetration – the ability to enter the pores.
  • Pot – Life: the duration of the two-component product from the preparation of the mixture in a closed bucket.
  • Relaxation: The ability to spread creating an uniform state.

We need to consider the drying times too: they take into account different factors such as the possibility of applying a subsequent layer of paint, the sanding and the complete hardening, (the final phase, when the layer is completely hardened)

Parquet varnishing phases downsides and how to solve them

The process of varnishing parquet has different steps: sanding, grouting, base preparation and the actual varnishing, when at least two coats of product are applied.

During these phases there may be flaws. Here are some.

  • Pitting: dots can appear during the final stage of painting if the sanding residues have not been carefully removed. To avoid this aesthetic defect it is useful to pass a vacuum cleaner or an electrostatic cloth before applying the paint.
  • Peeling: if you do not sand correctly between coats of paint, it may happen that these layers come off.
  • Dodge: if the surface to be treated has traces of silicones or oils, the paint will not adhere perfectly. It is essential to carefully clean the substrate before applying the paint.

It may also happen that the paint does not spread perfectly: this occurs when using little amount of product if compared to the total surface or when temperatures exceed 30 degrees. Finally, if the paint fails to sand even after the indicated drying time, it is likely that the environment is too humid. The advice is to let the room air out or use a dehumidifier.

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