Paint is a liquid that will form a layer on the surface of the object being painted after the liquid is dry. Its function is to protect the substrate (underlying layer), and increase the aesthetic value. With the layers of paint, the surface is also so much easier to clean.
There are four ways to distinguish the types of paint; based on the substrate, function, type of binder, and type of solvent.
- Substrate: paints for wood, iron, wall, stone, glass, and others.
- Functions: putty/wood filler, wall filler, primer, sanding sealer, sealer, topcoat, and others
- Binder: acrylic, melanin, NC (nitrocellulose), epoxy, synthetic, and others.
- Solvent: solvent based paint, water based paint.
Interior paint vs. exterior paint
It turns out that there are differences in paints for interior and exterior. Exterior paint is more resistant to weather, while the interior paint focuses more on the aesthetic aspects. So, obviously the interior paint cannot be used for the exterior, and vice versa.
Interior paint can be recognized from its smoothness and colors. It also requires a low maintenance, not easy to mold when applied in a damp area, the paint layer can cover the cracks in the wall, and it is free of heavy metal content.
Meanwhile, exterior paint, in addition to giving the aesthetic aspects of the wall, also serves to protect the walls from the weather. When walls are continuously exposed to direct sun, rainwater, and temperature changes, they can be easily damaged. That is why the exterior walls need paint that is resistant to weather changes. Any damage can cause water seepage during the rainy season. It usually causes spots on the wall.
The painting result is depending on the condition of the walls before being painted. The walls should be completely free of dust and dirt. Clean the wall of the former cement splashes, liming, dust, oil, and other dirt. Use rough sandpaper or brush with the help of clean water. To get rid of the moss or mildew, wash the walls with a 10 -15 percent chlorine solution, then rinse it with clean water, and let it dry.
One of the important things to consider when choosing paint is the content of harmful substances in it. Some hazardous materials, such as heavy metals, are commonly used in dyes and additives. The type of hazardous pigment are lead Chromate commonly used to give green, yellow, and red colors; Chromium to provide green, yellow, and orange colors; and Cadmium to produce the colors of green, yellow, orange, and red. Safe paint does not contain these hazardous materials.
Regarding the quality of paint, you can take one principle that “expensive things are usually good”. Logically, good quality paint is made from high quality ingredients that cost way more expensive. In addition, the content of additives is more complete so it will make the price higher and improve paint quality, e.g. in terms of the paint smoothness, suppleness, also ease of application.
Choose the right wall paint colors
- You are more free to choose interior wall paint colors since they almost have nothing to do with weather influence.
- For exterior wall paints, avoid colors that contain red element because it has a low light fastness or light resistance.
- Always use color scheme to combine these kinds of colors. It also involves the taste or feels you want to create.
- For a small room with a low ceiling, you should use light colors so the room seems more spacious.
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