Painting of wood

Types of paint used (painting systems)

1. Alkyl system (alkyl base + alkyl topcoat in the matching color)

Alkyd paints (alkaline) – for their production alkyd resins are used. Most alkyd resins contain phthalic anhydride and are therefore called phthalic. Phthalates are easy to apply and have good flowability, which emphasizes their versatility. Unfortunately, these products, when used outdoors, sometimes tend to chalk, due to the cracking of C = C double bonds in resin molecules. Alkyd paints are products which dry chemically, ie, bind oxygen from the air, so thick layers should not be applied so as not to limit the access of oxygen to the inner parts of the layer.

2. Epoxy-polyurethane system (epoxy base + polyurethane topcoat in matching color)

Epoxy paints are two-component paints, drying through chemical reaction of resin and hardener (mixed together just before painting in the right proportions). After complete curing, the coating is very hard (hardness relative to glass is 05, – 0.7) and very resistant to mechanical agents. It exhibits very good resistance to water, oils, many solvents and alkalines (even concentrated). They are not resistant to concentrated acids and UV rays and should not be used in sunlit areas (stronger chalking occurs).

Polyurethane paints are also two-component paints chemically cured (one-component paint is also available, here the other component absorbs moisture from the air). In terms of resistance and mechanical properties, they are similar to epoxies, except that they do not show UV-chalking.

3. Fire protection system (epoxy base + fireproof paint + polyurethane topcoat in the matching color)

Over time, the market demand for fire retardant constructions has increased significantly, which, for some time, protects steel components against the dangerous effects of fire. To meet these requirements, our employees have been trained in the application of fireproof coatings, as acknowledged by the certificates issued by the paint manufacturer.

Expanding paints are also fireproof and provide fire resistance from R 15 to R 90 (15 to 90 minutes respectively). They increase the volume of the coating under the influence of temperature. Due to the low thermal penetration and volume changes, the coefficient of mass of the protected element increases, and the coating is able to achieve the fire resistance of the steel.

Expanding paints are sold in the form of kits, which contain:

  • base paint- adapts the substrate for the best combination with the main paint,
  • main paint – the expanding coating with fireproof properties,
  • topcoat – thanks to it, the protected element gains aesthetic qualities by appropriately selected color.

One of the most important parameters of the expanding paint is the thickness of the coating as it directly affects the fire resistance of the protected element. The thickness of the coating is directly dependent on the mass index and the critical temperature.

4. Wood - decorative paints

Some of our products are made of steel and wood, such as benches, gates filled with wooden rails, floating platforms, scaffoldings. By realizing these types of projects we are gaining more and more experience in securing wood and giving it aesthetic appearance and usability.