Wall paint is the main decorative material used for the wall, occupying a large part of the entire family's decoration area, and plays a decisive role in the decoration effect and room environment. So how to buy wall paint? The following editor will introduce the wall paint purchase method and precautions in detail, let's understand it together.
Part 1 Introduction of classification performance of wall paint
Wall paint refers to the paint used for building walls, which plays a decorative and protective role, making the wall more beautiful and clean, and also protects the building wall and prolongs its service life. The wide variety of wall paints currently on the market has dazzled consumers. To choose a high-quality and environmentally friendly wall paint, you first need to have a detailed understanding of the wall paint. Otherwise, if you do n’t know anything, you can go shopping and be easily fooled by some bad vendors.
Wall paint classification in four dimensions and multiple categories
According to the substrate, it can be divided into organic coatings, inorganic coatings, and organic-inorganic composite coatings. Organic coatings include solvent-based, water-emulsion and water-soluble organic coatings. Inorganic coatings include traditional cement, lime, etc. According to the decorative effect, they can be divided into flat coatings with smooth and smooth surfaces, sand-wall coatings with sand-like decorative effects on the surface, and multi-layer coatings that form a three-dimensional decorative effect with uneven patterns. Interior wall coatings and exterior wall coatings can be divided into decorative coatings and special functional coatings (such as fire-resistant coatings, mildew-resistant coatings, waterproof coatings, elastic coatings, etc.)
Wall paint can be divided into different categories according to different standards. Specifically, it can be classified according to four dimensions: base material, decorative effect, use location and use function. The arrangement and combination of the four dimensions has derived a variety of paint categories. Generally, the two types of substrate and application area are often combined to name the paint, such as solvent-based exterior wall paint, water-soluble interior wall paint, inorganic exterior wall paint, etc.
Common wall paint latex paint has many advantages
The wall paint on the market is mainly of latex paint. Most home wall decoration mainly chooses to paint with latex paint. Latex paint is a kind of organic paint, which is a kind of water-based paint formulated with synthetic resin emulsion as the base material and adding pigments, fillers and various additives. Compared with other wall coatings, latex paint is more environmentally friendly, and there is no danger of explosion and fire during transportation and storage. At the same time, it has the advantages of convenient construction, fast drying of the coating film, good breathability, and good water resistance.
Judgment is based on the four performance indicators of wall paint
Wall paint has a variety of indicators to determine its quality. The following are the main indicators that have a greater impact on quality, such as hiding power, adhesion, viscosity and fineness. By understanding these indicators of paint, it will also have a basis when testing the quality of paint.
Hiding power: refers to the minimum amount of paint applied to the black and white grid evenly, so that the black and white grid no longer appears, expressed in g / m2. The greater the weight, the weaker the hiding power, and the stronger the hiding power, the less the amount of paint per unit area.
Adhesion: It indicates the adhesion between the coating film and the base layer, the degree of firmness between the coating film and the coated surface by physical and chemical action, the coated surface can be a bare substrate or a painted substrate. Wall paint with weak adhesion is easy to come off and affect the appearance of the wall.
Viscosity: refers to the viscosity of the paint, which can be measured with a paint viscosity measuring instrument. Viscosity is an important index in the performance of the paint, which has a great influence on the storage stability, construction performance and film-forming performance of the paint. If the paint is too thick, it is not easy to apply, and if it is too thin, it is easy to drip, so the viscosity of the paint should be controlled within a certain range.
Fineness: refers to the size and uniformity of the particles in the paint. The fineness directly affects the flatness, gloss and water permeability of the coating film surface. Generally speaking, the finer the coating, the more expensive.
Part 2 Careful and Careful Five Mistakes in Wall Paint Purchase
There are many types of wall paints, and consumers often get into misunderstandings when buying because they do n’t understand it. Buying inappropriate products will waste money and delay construction. For consumers, when buying wall paints, they must carefully identify and get rid of misunderstandings.
Myth 1: Ignore the price and ignore the quality
When many people buy wall paint, it is easy to walk into the misunderstanding of paying attention to price and ignoring quality. Some people think that the higher the price of the paint, the better, so find the most expensive one when choosing, but the experimental results show that this is not the case. The other extreme consumer is to save money. The lower the price when buying, the better. This saves a lot of money, but the quality of the wall and the indoor environment in the future will be worrying. Therefore, it is recommended that you pay attention to the quality of the wall paint while considering the price, and generally choose a reputable big brand.
Misunderstanding 2: Repackaging and ignoring the inner
Consumers always look at its packaging when buying latex paint, which is very necessary. However, it should be noted that good-looking coatings are not necessarily of inherently good quality. In order to attract customers, some manufacturers make a lot of articles on the product packaging, deliberately exaggerating the performance of the product. Therefore, it is recommended that consumers should pay attention to other aspects in addition to looking at the product packaging, such as viewing the detailed test list of the product.
Myth 3: The color card is exactly the same as the wall color
Many consumers think that the color of the paint on the color card is exactly the same as the color of the wall, which is a misunderstanding. Due to light reflection and other reasons, after the four walls of the room are painted, the wall color will look darker than the color card. The color that consumers see on the color card is usually different from the actual color after the paint is applied to the wall. Therefore, it is recommended that consumers choose the color number that is slightly lighter than their favorite color when choosing a color in the color card. If they like dark walls, they can be adjusted to the color of the color card.
Myth 4: Do not estimate the amount of paint used in advance
Many consumers do not estimate the amount of paint used in advance, and are afraid to buy less paint, so they always have more benefits when buying. This may result in a waste of materials and increase the cost of home improvement, while the accumulation of excessive paint also has a certain impact on construction safety. Therefore, it is recommended that consumers should look at the area of ​​the construction area before construction to estimate the amount of materials purchased. A relatively simple method to estimate the amount of paint used is: the amount of paint required to apply a coat (L) = (wall area x 2.5) / brushable area per liter of paint.
Myth 5: No smell is environmentally friendly
Many people judge the safety of wall paint by smelling it, and think that low-odor or odorless wall paint is environmentally friendly. This is a big mistake. Because odorlessness can be achieved by adding flavors or using low-odor materials, odorless coatings are not all environmentally friendly and non-toxic. The most professional way to judge the environmental protection of wall paint is to see if its environmental protection indicators meet the standard. There are three key environmental indicators for wall paint: VOC, free formaldehyde, and heavy metals.
Part 3 Flexible and practical wall paint purchase skills
In order to buy high-quality and environmentally friendly wall paint, consumers must polish their eyes when buying. Consumers can purchase according to a few tips listed below.
1. Purchase through regular channels to view environmental inspection reports
Choose regular large-brand products or regular channels to purchase. Paint coating products are not only related to the beauty and comfort of the living environment, but more importantly, to the health of family members. The front of the general latex paint will be marked with the name, trademark, net content, composition, method of use and precautions. Pay attention to the production date and shelf life. The shelf life of each brand's latex paint ranges from 1 year to 5 years. Try to buy products that have been produced recently.
2. Sway the volume and listen to the sound
Generally speaking, a qualified latex paint is about 7 kg in a 5 liter barrel and about 25 kg in a 18 liter barrel. You can judge whether it is qualified by weighing the weight of the paint barrel. In addition, there is a simple method to lift the paint bucket. Normal brand latex paint can not be heard when shaking. It is easy to shake the sound to prove that the latex paint is not enough viscosity.
3. Four methods for hands-on opening
A look at the water solution, the high-quality latex paint is relatively viscous, a milky white liquid, no hard lumps, even after stirring, there is no odor; Second, look at the wire drawing, take the brush to stick the latex paint, can hang the wire long and continue to fall For better; three touch feel, touch with your finger, the genuine latex paint should feel smooth and delicate; four smell, non-environmental-friendly paints mostly have irritating smell, smell a pungent smell in the paint.
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