What is the difference between acrylic, urethane, silicone and fluorine resin based paints?
Weather resistance and durability become higher in the order of acrylic, urethane, silicone, and fluorine.
The expected lifespan is generally said to be 5-8 years for acrylic, 8-10 years for urethane, 10-15 years for silicone, and 15-20 years for fluorine.
Which is better, one-pack or two-pack product?
In general, the two-pack product is a reactive curing type, so it can be applied to a wide range of substrates. It can be said that the two-pack type is superior to the one-pack type in terms of penetration and adhesion to the substrate.
Does the expected lifespan change depending on the paint gloss/sheen level?
There is almost no difference in the expected lifespan due to the difference in gloss/sheen.
What paint gloss/sheen types are available?
We have 5 types depending on the product: gloss (high-gloss), 70% gloss, 50% gloss (semi-gloss), 30% gloss (satin) and matt. Even if the gloss level is same, the degree of gloss differs slightly depending on the product.
Can heat reflective coating control the rise in indoor temperature?
In the test assuming an actual detached house, a temperature reduction effect of approximately 3°C to 5°C has been confirmed.
However, the heat reflection effect varies depending on the structure of the building, the usage and the type of insulation material, the ventilation, the area of the opening, the location, and the coating specification. Therefore, the effect of reducing the indoor temperature cannot be guaranteed.
Is there a difference in the effect of heat reflective coating depending on the colour?
The darker the colour (the lower the brightness), the higher the surface temperature. This is the same for regular paints. When the same colour is applied, the surface temperature difference between regular paint and heat reflective coating increases as the colour changes from light to dark. In other words, the difference in solar reflectance is larger for darker colours and smaller for lighter colours.
What is the difference between sealer and filler?
Sealer has the meaning of "adhering, covering". It is an undercoating material that is mainly applied to absorbent substrates such as mortar and concrete. It acts like an adhesive to enhance adhesion to the substrate.
On the other hand, filler has the meaning of "filling, stuffing, filler". It is mainly used to repair cracks and fill uneven surface to make it smooth.
Should I apply the paint as thickly as possible?
There is an appropriate consumption to apply, so please apply accordingly. Even a thick coat of paint does not guarantee long-lasting performance. On the contrary, it may cause poor finish such as paint drips, pinholes, etc.
What are the advantages of breathability and moisture permeability in paints?
If the paint film is breathable and moisture permeable, water vapour will not accumulate inside the paint film, preventing the occurrence of blisters, which are defects in the paint film.
What is the difference between water-based paints and solvent-based paints?
Compared to solvent-based paints, water-based paints have less odour, so they can be said to be environmentally friendly. However, since it cannot be used at low temperatures of 5℃ or lower, solvent-based paints are more suitable for low temperatures such as in cold region. There is no big difference in performance.
How thick is the paint film?
The paint film thickness is as follows.
Spray tiles, lithin: about 0.5-3 mm
Stucco: about 1-5 mm
Regular paints (emulsion and anti-rust coatings): about 30μ (0.03 mm)
Is it OK to use a water-based paint on exterior walls? From the word "water-based", I get the impression that it will dissolve in rain, etc. even after the paint is completely dry.
Generally, water-based paint forms a paint film by fusing the resin during the drying process, so there is no problem if it forms a film.
Can I use water-based paint over solvent-based paint? Is it OK to use solvent-based paint over water-based paint?
There is no particular problem because an undercoat (sealer) is applied when water-based paint is used over solvent-based paint.
When solvent-based paint is used over water-based paint, the solvent may damage the old paint film and cause abnormalities such as blisters and shrinkage. Check the condition by test application prior to the actual application.