lacquers

All wood flooring lacquers and their use as well as the finishing requirements for the finished treatment are described in more detail in the manual TRÆ 63 Wood Floors - Selection and Maintenance. Varnishes can be classified according to their use:

basecoat

Lacquer for priming with properties that prevent side bonding of boards or rods and discoloration. Groundcoat is pore-filling, but without the same gloss and durability as topcoat, and should therefore only be used for pre-treatment.

For purposes where high wear resistance is desired and / or where adhesion with water-based products is difficult, solvent-based varnishes should be used. Formaldehyde-containing flooring must be CE marked in class E1.

Topcoat

Lacquer with great durability

Varnishes suitable for floors subject to heavy wear, for example. in kitchen, hall, offices, assembly rooms, shops, restaurants, dance floors and the like.

Paint with normal wear resistance

Varnishes suitable for floors in normal living rooms, eg. living rooms, bedrooms and rooms with similar wear.

Lacquer for sports floors

Varnishes developed according to the requirements for sports floors in the form of friction, e.g. according to EN 14904. The customer's requirements profile determines which varnish is to be used.

Painting Guide

Floors exposed to excessive wear

eg. shops, restaurants and dance floors

  • Use lacquer with high abrasion resistance.
  • Apply 1 coat of primer and at least 3 layers of topcoat with applicator (cushion), brush or mohair roller (1L / 8-10 m² per application).
  • The floor is sanded after 1st and possibly. 2nd application. In the subsequent applications, they are sanded as needed.

Floors subject to heavy wear

eg. kitchen, entrance hall, offices and conference room

  • Use lacquer with normal wear resistance.
  • Apply 1 coat of primer and at least 2-3 layers of topcoat with applicator (cushion), brush or mohair roller (1L / 8-10 m² per application).
  • The floor is sanded after 1st and possibly. 2nd application. In the subsequent applications, they are sanded as needed.

Floors exposed to normal wear and tear

eg. normal living rooms, bedrooms, children's rooms, etc.

  • Use lacquer with normal wear resistance.
  • Apply 1 coat of primer and 2 layers of topcoat with applicator (pad), brush or mohair roller (1L / 8-10 m² per application).
  • The floor is sanded after the first application. In the subsequent applications, they are sanded as needed.

Drying times

The paint should dry properly between each application. The normal drying times are:

  • Before intermediate grinding, at least 1-2 hours.
  • Before repainting, at least 8 hours
  • Before furnishing, at least 24 hours.
  • Protective cover should be avoided. Where cover is exceptionally necessary, cover with a diffusion-open cover when the paint is completely cured and ready for use.
  • Before applying carpets or the like, which are not open to diffusion, at least 1 week.
  • Before exposure to excessive wear, at least 2 weeks. After drying (1 day), any bonding between the floor and the skirting boards must be broken by pressing the floor down and free of the skirting boards.

re-coating

New factory-painted floors

Factory lacquering generally provides a more durable surface compared to most of the lacquers used in on-site refurbishment and painting. It is important to be aware that further refinishing of new floors can result in poorer quality and durability, because new factory lacquers contain additions that include improves wear resistance. It also means that some lacquer surfaces can be difficult to repaint.

In the event of re-painting, the surface must be sanded according to the supplier's instructions, and it is recommended to carry out an adhesion test, and if necessary take the paint supplier to advice before the work is carried out.

Previously painted floors

The lacquer surface must be cleaned with a basic cleaning agent before re-painting so that all grease, wax, polish and the like have been removed.

The floor is sanded and all abrasive dust removed. Polish / waxed floors are sanded to clean wood.

An adhesive test should always be carried out before painting the floor. Reprocessing is performed with at least 1 layer of topcoat.

Floors that are abraded to clean wood must always be primed before finishing with topcoat. Prior to sanding, the condition of the floor should generally be assessed, see Guidelines for floor grinding

film Thickness

Many thin layers are best. One liter usually reaches 8-10 m²

Prerequisites for paintwork

  • The function and appearance of wood floors depends on the relative humidity in the room being kept between 30-65%. Painting should therefore be done when the floor is free of moisture, which in practice is the period from June to October, when the humidity is highest.
  • Underfloor heating must be switched off 1-2 days before painting and the temperature of the floor surface must not exceed 20 ± 2 ° C. The floor temperature of the floor must be lower than the room air, so the paint does not dry too quickly. After painting, the surface temperature can be increased gradually over 2-3 days to normal operating temperature, but not more than 27 ° C.
  • Vacuum the floor thoroughly before painting. Also remove dust on the skirting boards, radiators, etc. that can get stuck in the wet lacquer.
  • Silicone residues, e.g. grouting can form a thin film on the floor and prevent the paint from sticking to the wood surface. The problem can be remedied by cleaning all utensils and surfaces.
  • Highly absorbing tree species, e.g. pine and beech should be applied with an extra top layer.
  • Some tree species, e.g. beech is sensitive to moisture changes and should be applied with an additional top layer.
  • Varnishes of different type and make should not be mixed or used for system treatments.
  • Painting of lye and / or oil-treated floors works with certain manufacturers. Follow the suppliers' instructions.

Work environment

Use suitable face mask and work gloves according to the instructions of the paint supplier and the Danish Working Environment Authority, see WOOD 54 Wood Protection for further information.

Maintenance

Follow the supplier's instructions for maintenance and cleaning. See also the general maintenance and cleaning instructions in TRÆ 63 Wooden floors - choice and maintenance.