Comparison and analysis of the technology and cost of commonly used paint products for building exterior walls such as real stone paint and colorful paint!

1.
Industry development trends and commonly used brands in the market

Exterior wall coatings are basically divided into ordinary non-elastic latex paints, elastic coatings (flat coating, napping, embossing), texture coatings, real stone paint, colorful coatings, water-based/oil-based fluorocarbon metallic paints (currently used less), and some Special processes, such as fair-faced concrete effects, such as finished products with imitating sandstone effects, imitating limestone, and pottery colored stones

2.

1.
Ordinary non-elastic exterior wall latex paint

(1) It has only cleaning and beautifying effects.
A good latex paint can still look like new after a few years.
It is inelastic and does not prevent micro-cracking.
It is not suitable for use in North China, Northwest and other regions;

(2) The general market double package price is around 30 yuan/㎡;

(3) It can only be used in areas without external wall insulation such as East China and South China
.
It is more commonly used for building renewal, walls, and inside balconies
.

2.
Elastic coating

(1) Elastic architectural coatings are based on synthetic resins and are formulated with pigments, fillers and additives.
After a certain thickness is applied, the architectural coatings have the function of covering small cracks caused by the expansion and contraction of the substrate;

(2) The general market double package price is more than 30 yuan/㎡, the main difference lies in the different quality of the resin used;

(3) It is suitable for areas with external wall insulation.
Because the external insulation is a splicing of plates, it will be dislocated with the settlement of the building, which will cause the dislocation of the external wall coating and cause the coating to crack.
Therefore, the external wall coating must be Elastic anti-cracking function (resin);

(4) According to the project's modeling situation and construction process, it can be divided into flat coating, small garland, large garland or embossed modeling, but the mechanism is inevitably more monotonous than texture coatings
.
It is generally used in the main walls of high-rise buildings in the middle and low-end parks and other auxiliary buildings
.

Three, texture coating

Texture coating generally refers to a distinctly personalized texture effect coated with specific tools, which is different from ordinary flat-coated interior and exterior wall coatings

1.
Composition of texture coating

2.
Features of texture coating

(1) The color of the texture paint is displayed by the color paste, and the shape is changeable;

(2) The color texture is natural, the vision is soft, the colors are diverse, and the decorative effects are rich and colorful; 

(3) Excellent crack resistance;

(4) The construction is convenient, the operation is simple, and it is not restricted by the place, and can be used for complex shapes;

(5) There are many construction methods, such as batch scraping and spraying
.

3.
Production process of texture coating

The production process of texture coating is divided into two steps:

(1) Preparation of texture slurry;

(2) The texture paste is mixed with white sand and then the color paste is added for toning to make texture coating
.

4.
Construction technology

5.
Common effects of texture coatings

Real stone paint, also known as natural stone paint, stone paint and imitation stone paint, is a thick-build architectural paint composed of synthetic latex as the base material, natural colored sand powder particles as the aggregate, and a small amount of additives.

The color and shape of real stone paint are realized by adjusting the different colors and different particle diameters (size) of the sand or rock chips in the formula.
There is no special requirement without adding color paste to color
.
The price of real stone paint is basically around 55~75 yuan/㎡, which is mostly used in residential and commercial podiums
.

1.

Emulsion + colored sand + various additives = real stone paint

2.

3.
Features of natural colored sand

(1) Granular and powdery products processed by various granite or marble natural ores through multiple processes such as selection, crushing, crushing, grading, sand mixing, and packaging;

(2) Excellent color retention performance and no fading; (3) Strength, color and particle size are difficult to control and change with the change of ore; (4) Resources are in short supply, and supply exceeds demand.
Varieties that can be supplied stably are up from four or five five years ago The ten species have been reduced to the current ten species
.

4.
Additives

Commonly used additives include: thickeners, antifreeze, preservatives, and film-forming additives

5.
The production process of real stone paint

The production process of real stone paint is divided into two steps:

(1) Preparation of real stone paint slurry

(2) Real stone paint slurry is mixed with colored sand to make real stone paint

6.
Construction technology

7.

Real stone paint has the advantages of good decoration, wide application, simple construction, water-based environmental protection, and good weather resistance
.

8.
Common effects of real stone paint

9.
The difference between texture paint and real stone paint

(1) Different visual perception

The imitation stone effect of real stone lacquer is lifelike, and the degree of imitation stone can reach more than 90%.

(2) Price difference

The price of texture paint is 4.
5 yuan/kg, and the price of real stone paint is 4-4.
2 yuan/kg
.
The content of square meters of real stone paint is higher than that of texture paint, and the price of square meters of real stone paint is slightly higher than that of texture paint;

(3) Different construction techniques

The real stone paint is mostly sprayed, and the texture paint is mainly scraped;

(4) Different materials

The aggregate of real stone paint is natural colored sand, and the main material of texture paint is texture sand
.
The color of natural colored sand has been determined from the moment of mining; the color of textured sand can be adjusted according to artificial synthesis
.
The texture coating is natural and environmentally friendly, non-toxic and tasteless, waterproof and has good air permeability.
It is a good decoration coating
.

Five, colorful paint

Multicolor paint, also known as liquid granite paint, is a water-based paint for building exterior walls that consists of two or more water-based colored particles suspended in a water-based interlayer, and produces multiple colors through one spray

1.
Forming mechanism

2.
How to identify water-in-water and sand-in-water?

Water-in-water-imitation smooth granite stone

Sand-in-water-imitation lychee surface granite stone

3.
Colorful paint composition

Colorful paint is not a single product, but a combined and systematic product including primer, main material of middle layer material, and finish
.

4.
Construction technology

5.
Common effects of colorful paint

6.
Product characteristics of colorful coatings

(1) High degree of simulation

The degree of simulation can reach 95%, which is almost the same as the original stone effect, with a sense of hierarchy;

(2) Pure acrylic and silicone acrylic synthetic emulsion system, ultra-high durability

It adopts silicone acrylic and pure acrylic synthetic emulsion system, which has strong coating adhesion, anti-ultraviolet ability and anti-contamination ability.
At the same time, ceramic inorganic pigments are used to ensure long-lasting color retention; suitable for exterior wall decoration of high-end and high-rise buildings
.
At the same time, the product is anti-mildew, anti-fouling, elastic, anti-cracking, and resistant to the test of high and low temperature difference environment;

(3) Fully water-based system, green and environmentally friendly

The coating materials of each system of Multicolor Coating adopt EU environmental protection standards, and the water-based system has extremely low VOC content
.
The application (spraying) is absolutely non-irritating
.
Construction spraying is easy and free;

(4) Rich colors, uniform and natural effects

Although imitating stone, but surpassing stone, the color depth is arbitrary, the pattern size is arbitrary, and it can create an artistic realm that granite can't match
.
In addition, the serious chromatic aberration problem of natural granite is completely avoided;

(5) Simple construction method

The product is a single-component water-based product.
Multi-color texture can be obtained by spraying with a single gun (special spray gun), creating a colorful stone effect
.
The construction is simple and quick, the construction period is short, and the damage repair is easy
.
It is especially suitable for wall treatment with more heterosexual structures.
It is easy to match various modeling lines, columns, reliefs, etc.
for detailed color design treatment
.
Special spray gun must be used, brush and roller coating is not allowed, basically it is one-time construction, which is different from real stone paint which requires multiple and multi-layer spraying;

(6) Customization

Colorful paint has professional customization, and can design corresponding color effects according to demand
.

7.
Product features

Realistic stone decoration effect, ultra-high durability, green environmental protection, rich colors, uniform effect, simple construction, and customization
.

8.
Comparison of colorful paint and real stone paint

(1) High simulation: The appearance is closer to natural granite stone than real stone paint and rock chip paint, with a realistic imitation stone effect, and the fidelity can be as high as 95% or more;

(2) Contamination resistance: Multicolor paint has high self-cleaning and waterproof performance, and dust will not penetrate and deposit in the paint film;

(3) Water resistance: The coating has better waterproof performance than real stone paint;

(4) Weather resistance: high emulsion content, weather resistance is twice that of real stone paint;

(5) Batch stability: The batches of pigments used in colorful paint products are stable and easy to color; natural colored sand is used for real stone paint and rock chip paint, and the batch is unstable, and the natural colored sand is becoming less and less
.

(6) Lightweight and safe: The body is very light, about 0.
5kg/m³, which is equivalent to 1/6 of the dry hanging stone, especially suitable for external wall insulation
.

6.
Comparative analysis of exterior wall coating products