Paints and Architectural Coatings

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What does the expected useful life of paints mean?

The initial functions and performance of paints will deteriorate due to several factors including ultra violet rays, water and exhaust gases.
There are some stages of deterioration as follows.
Stage 1:The appearance is damaged by mainly dirt and discoloration.
Stage 2: The deterioration of paint film progresses to the next stage, such as   chalking, abrasion or cracks.
Stage 3: Cracks on paint film reach to substrate, and floating or peeling starts to occur.
Stage 4: Paint film loses its continuity, adhesion to substrate and protection function.

Among these stages, paint film does not lose the protection function in Stage 1. So, it is too early to do any repair work. It is time to do repair work in Stage 2 and 3, so that means the useful life is the period of Stage 1. The durability of paint film cannot be expected in Stage 4, so paint film has to be removed thoroughly and renovation with new coating materials is necessary.
Deterioration is usually caused by several factors including materials, regions where they are used, application standard, maintenance and applied areas. The expected useful life is provided after taking all these factors into account.

What is the difference between finishing materials and paints?

Paints usually provide thin paint film for protection and colouration. On the other hand, finishing materials provide thick texture by spraying or applying with a trowel or roller.

What are ceramic paints? 

There is no formal definition for ceramic paints. The following two types will fall into this category. 

  1. Natural stone-like coating materials, using coloured aggregate

   -- ELEGANSTONE (natural stone-like finish), CERASKAKEN (pottery stone-like

  1. Materials with Si-O linkage in their resin composition

   -- Silicon resin coatings(CERATIGHT, CERAMI SILICON W)

What are NAD type paints?

NAD stands for Non-Aqueous Dispersion. The NAD type paints of SKK are CLEAN MILD series and NAC BASE. Resin particles of 0.1 - a few μm disperse in aliphatic hydrocarbon solvent (turpentine). Weak solvent paints also include turpentine -soluble paints in which resin is dissolved in solvent (turpentine).

What is the difference between multi-layer and single-layer coating?

Multi-layer coating materials are finished with 3 layers, undercoat + main coat + topcoat. Single-layer coating materials (elastic coatings) are finished with 2 layers, undercoat + main coat. Thus, the process of topcoat application can be skipped.

What are decorative protection and cosmetic grooves?

As to decorative protection, a special tape is applied prior to coating in order to make grooves on a surface. As an alternative, cosmetic grooves can be applied to the protected area. When applying design coatings to a large area, making grooves at appropriate space will improve the natural finish of surfaces.