There are many types of decoration materials, focusing on environmental protection, practicality and economy

Two major categories: paint and coating

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1) How to choose paint

Relevant experts said: No matter whether it is "up to standard "Paint", "environmentally friendly paint", or "green paint" must first comply with the national limit standards for hazardous substances. It should be said that paint that meets standards is safe. Although VOC in paint is harmful to the human body, there is a problem with its quantity. As long as the VOC is within the limit, it is not enough to cause too much harm to the human body. Consumers do not need to talk about VOC discoloration at all.

Like other products, the paint market is mixed. Experts remind consumers not to be cheap when buying paint, but to choose products from well-known brands, so as to ensure the safety of themselves and their families.

When choosing, you should carefully read the quality inspection report of the product; observe whether there is any rust or leakage at the seams of the iron drum; pay attention to whether the express markings on the iron drum are complete; for imported paints, it is best to It is best to choose products with Chinese logos and descriptions; non-environmentally friendly paints, because VOC, formaldehyde and other harmful substances exceed the standard, most have a pungent odor. If you smell a pungent odor when purchasing, you need to choose carefully. In addition, it is best not to buy paint with added fragrance, because the additive itself is a chemical product and is difficult to be environmentally friendly.

If possible, ask the seller to open the paint bucket and check it personally. If there is serious delamination, it indicates poor quality; stir it gently with a stick. After lifting it, if the paint stays on the stick for a long time and is evenly covered, it means the quality is better; dip a little with your hand and wait until it dries. It is better if it is difficult to wash off with clean water; gently twist it with your hands, the more delicate the better.

2) How to choose furniture paint

1. Polyester paint uses polyester resin as the main film-forming material. Unsaturated polyester paint is commonly used for high-end furniture, also known as "piano paint". The characteristics of unsaturated polyester paint are:

1. The thickness of the film can be up to 1 mm in one application, which is the best among other paint types. Incomparable;

2. The paint film is plump, clear and transparent, and its hardness and gloss are higher than other paint types;

3. Water-resistant, heat-resistant and short-term light-resistant The flame performance is better than other paint types;

4. Unsaturated polyester paint has poor flexibility and is easily brittle when stressed. Once the paint film is damaged, it is difficult to repair, so care should be taken to protect the furniture when moving.

2. The polyurethane paint film is hard and wear-resistant. It has a high gloss after polishing. It has good water resistance, heat resistance, acid and alkali resistance, and is a high-quality advanced wood paint.

3. Acrylic paint is a paint made of polymers of methacrylate and acrylate, including water-white varnish and pure white white enamel. The acrylic paint film is bright, hard, and has good color and gloss retention properties. It is water-resistant and has good adhesion. After polishing, the paint film is as smooth as a mirror and remains unchanged for a long time.

4. Matte paint is mainly made of varnish, mixed with an appropriate amount of matting agent and auxiliary materials. Due to the different amounts of matting agent, the glossiness of the paint film is also different. The matte paint film has a soft gloss, even thinness, smoothness, temperature resistance, water resistance, acid and alkali resistance.

5. Nitrocellulose paint is also called spray paint and wax paint. It is mainly made of nitrocellulose, with synthetic resin, toughening agent, solvent and diluent added to make the base material. The transparent base material that does not contain nutrients is nitrocellulose varnish, and the opaque liquid containing color is nitrocellulose enamel.

The nitrocellulose paint film can obtain a high gloss after polishing and is a commonly used paint with good decorative properties. Nitrocellulose paint film has poor adhesion, and the film hardness is not as good as polyurethane paint, unsaturated polyester paint and acrylic paint.

3) How to buy latex paint

People’s requirements for latex paint are no longer limited to decoration, but also pay attention to functionality.

Therefore, when purchasing, the function of latex paint is very important. Latex paint should be selected according to the different parts of the painting. For example, the latex paint used on the walls of bedrooms and living rooms requires strong adhesion, fine texture, resistance to differentiation and breathability. Good; latex paint in kitchens and bathrooms should be waterproof, mildew-proof, and easy to wash.

Inferior latex paint not only affects the construction quality, but the substandard chemical raw materials contained in it can also harm human health, so you should try to buy it at a specialty store or a special dealer store. When purchasing, check the packaging, appearance and internal quality of the product in detail.

After opening the cover, you can find that truly environmentally friendly latex paint must be water-based, non-toxic and tasteless, so if you smell it, there are pungent smell or industrial flavor, then they're not the best choice. After a period of time, the surface of genuine latex paint will form a thick, elastic oxide film that is not easy to crack, while defective products will only form a thin film that is brittle and has a spicy smell. Use a wooden stick to mix the latex paint evenly, and then use a wooden stick to pick it up. When high-quality latex paint flows down, it will form a fan shape. If you touch it with your fingers, genuine latex paint should feel smooth and delicate. Apply latex paint to the wall and wipe it with a damp cloth. The color of the genuine product will be as bright as new, while the color of the defective product will fade with just a light wipe due to poor condensation and water resistance.

Title: Three categories: wall tiles, floor tiles

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1) How to choose wall tiles

1. Characteristics of ceramic wall tiles

Ceramic wall tiles are essential in home decoration Wall decoration materials, ceramic wall tiles have low water absorption and strong resistance to corrosion and aging. In particular, its special resistance to moisture, scrubbing, and weathering cannot be replaced by other materials. Its low price and rich colors make it an ideal decoration material for kitchens, bathrooms, and balcony walls in home decoration.

2. Types and specifications of ceramic wall tiles

Decorative tiles used for wall decoration can be divided into two categories.

The first type is glazed tiles. The surface of this kind of tiles is coated with a layer of colored glaze. It is processed and fired. It has rich color changes and is especially easy to clean and maintain. It is mainly used in kitchens and bathrooms. Wall decoration. The other type is full-body wall tiles, which are hard in texture, good in impact resistance, anti-aging, and do not fade, but are mostly in a single color and are mainly used for decoration of balcony walls.

The shape of ceramic glazed tiles is mostly rectangular. When used, they can be pasted vertically to increase the visual height after decoration. There are various specifications such as 60 mm × 240 mm, 100 mm × 200 mm, 115 mm × 240 mm, 150 mm × 200 mm, 150 mm × 225 mm, 200 mm × 300 mm, etc., with thicknesses between 6 and 10 mm. You can choose according to your needs.

Through-body wall tiles are mostly long strips, which should be pasted horizontally when used to give people a stable and solid feeling. They are available in 45 mm x 95 mm, 45 mm x 195 mm, 50 mm x 100 mm, 50 There are various specifications such as mm×150mm, 50mm×200mm, 60mm×240mm, etc. The thickness is generally 6~8 mm, which can be selected according to needs.

3. Quality appraisal of ceramic wall tiles

The quality appraisal of ceramic wall tiles should mainly grasp the following points:

(1) Ask the dealer for Product quality inspection certificate and quality inspection report.

(2) Conduct a visual inspection on site to observe whether the product has obvious quality defects such as missing sleeves, spots, cracks, shaft bubbles, ripples, etc. Products with the above defects must not be selected.

(3) Detect by hand. Clamp two bricks with your fingers and then hit each other. If the sound is crisp and loud, it is a qualified product. If the sound is low and dull, it must have inherent quality defects.

(4) Identify color differences. Since the quantity of wall tiles purchased at one time is large, if there is obvious color difference between multiple packages, the decoration effect will be greatly affected. It is necessary to sample and compare the products in all packages to observe the changes in color difference. Those with large color differences cannot be selected.

(5) The specifications and dimensions must be inspected one by one. Products with dimensional errors greater than 0.5 mm and flatness greater than 0.1 mm will not only increase the difficulty of construction, but also have poor post-decoration effects and cannot be used. project.

4. Types of adhesives for ceramic wall tiles

There are currently two options for pasting ceramic tiles on the wall. One is to purchase finished adhesives from the market and paste them directly, and the other is to Prepared on site.

There are three types of adhesives commonly used for bonding bricks on the market: the first is instant adhesive, which is a product that can be used directly. When using, apply a thin layer of glue on the surface of the wall and the back of the tiles. After letting it dry for a few minutes, when the glue surface is not sticky when you touch it with your hands, just press it on the wall. It is very convenient to use. The second type is JD-503 tile adhesive. The product is in the form of white powder. When used, add water to make a viscous glue. This product not only has strong adsorption power, but also has a certain amount of time to adjust the paste. The adjusted glue should be used up within 4 hours. Generally, the glue thickness is between 3 and 5 mm. The third type is 903 multi-functional construction adhesive, which is also a direct-use product. This product has high bonding strength and can be adjusted within 2 hours. The squeegee thickness is 2 mm and is very convenient to use. The cost of using finished glue for pasting is relatively high, so it is suitable to be used when the base surface of the wall is relatively flat, otherwise the cost of pasting will increase.

When pasting wall tiles in home decoration, the method of preparing 107 glue cement glue agent on site is generally used. Prepare a paste-like cement slurry, and the bonding thickness is within 5 mm, which can be several

2) How to choose floor tiles

Floor tiles generally refer to ceramic tiles, which are ceramic products. The clay, which is a mixture of different materials, is cut, dehydrated and air-dried, and then fired and pressed at high temperatures to make bricks of different shapes. It is mainly used on the walls and floors of bathrooms, kitchens, and balconies.

Classification of ceramic tiles:

Ceramic tiles are usually divided into glazed tiles and full-body tiles according to different craftsmanship.

1. The pavement must be firm and without skew, warping or hollowing.

2. The overall surface is smooth, and the flatness error meets the allowable deviation requirements.

3. The joints should be densely filled, straight, even in width and width, and without obvious misalignment.

3) How to choose ceramic mosaic tiles

Ceramic mosaic tiles are suitable for laying bathroom floors, and the materials should be of high quality. Ceramic mosaic tiles are made of single small ceramic bricks with a side length of no more than 50mm and are pasted on lining paper to form a brick connection. Single ceramic tiles are square, rectangular, hexagonal, trapezoidal, etc.; the brick joints are divided into squares, rectangles, etc., and the side lengths of the brick joints are 284, 295, 305, 325, etc.

Ceramic mosaic tiles are divided into glazed or unglazed mosaic tiles according to their surface properties; they are divided into two types: single color and mosaic according to the tile joints. Ceramic mosaic tiles are divided into two grades: high-quality products and qualified products according to the allowed size deviation and appearance quality.

The number of bricks required for ceramic mosaic tiles can be calculated according to the following formula:

Number of ceramic mosaic tiles = (laying area/area of ??each board) × (1 ceramic mosaic tile loss Rate)

The loss rate of ceramic mosaic tiles: 1.5 for those without flowers; 6 for those with flowers.

Ceramic mosaic tiles are packed in cartons, and the manufacturer's name, trademark, factory batch number, name, specification, quantity grade, color number, and moisture-proof and fragile product signs are indicated on the packaging box.

Ceramic mosaic tiles should be handled with care during transportation and are strictly prohibited from getting damp. During storage, they should be stacked separately according to grade, variety, and color number.

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1) How to choose natural finishes Stone

Natural stone refers to the general term for materials that are mined from natural rock masses and processed into blocks or plates. There are two main types of facing stones used for architectural decoration: marble and granite.

Marble refers to metamorphic or sedimentary carbonate rocks. Its main chemical component is calcium carbonate, accounting for more than 50%, as well as magnesium carbonate, calcium oxide, manganese oxide and secondary minerals. Silicon oxide, etc. Marble is a medium-hard stone.

The color of marble slabs is related to its composition. White contains calcium carbonate and magnesium carbonate, purple contains manganese, black contains carbon or asphaltene, green contains diamond compounds, yellow contains chromium compounds, reddish brown, purple, Brown-yellow contains manganese and iron oxide hydrate, while various colors contain various impurities with different ingredients. Pure white marble has relatively simple ingredients, but most marbles are composed of two or more ingredients mixed together. Among various colors of marble, dark red and red are the most unstable, followed by green. The white component is single and relatively stable, and it is not easy to weather and change color. For example, white marble contains chemically unstable red, dark red or golden particles with smooth surface, which will make the marble structure loose and undergo qualitative changes under the influence of sunlight. . In addition, marble generally contains impurities, and its main component is calcium carbonate. It is easily corroded by carbon dioxide, sulfide, water vapor, etc. in the atmosphere, loses its surface gloss, weathers, and cracks. Therefore, except for a few, such as white marble, moxa leaf green, etc. The relatively stable and durable varieties with pure quality and few impurities can be used outdoors, while other varieties are not suitable for outdoor use and are generally only used for indoor decoration. And because marble is a medium-hard stone slab, the hardness of the slab is low. If it is used on the ground, the polished surface will be easily lost, so try not to use marble slabs on the ground.

Because marble slabs are expensive and are high-end decorative materials, they are commonly used in hotels, exhibition halls, theaters, and shopping malls. Indoor walls, columns, railings, window sills, service countertops and other parts of public buildings such as airports and stations. Nowadays, there are also residences with relatively high decoration levels that use marble slabs as floor decorations in their living rooms, which looks noble and elegant. However, marble slabs are rarely used for wall decoration in residential decoration, mainly because the construction and operation technology of wall decoration marble is very demanding. In addition, it can also be used to make various marble decorations, such as murals, screens, seat screens, hanging screens, wall hangings, etc. for interior decoration. It can also be used to inlay flower pots and inlay high-grade hardwood carved furniture.

Marble decorative panels are all mirror panels that have been ground and polished. The surface is as bright as a mirror, crystal clear, and the texture is smooth and delicate. Therefore, when selecting, the main consideration is that the color pattern on the surface is consistent with the materials in other parts of the room. Just coordinate.

Natural granite is a magma rock whose main component is aluminum silicate. Its main chemical components are aluminum oxide and silicon oxide, as well as a small amount of calcium oxide, magnesium oxide, etc., so it is an acidic crystalline rock. Belongs to hard stone.

Granite is hard in texture, resistant to acid and alkali, corrosion, high temperature, light, frost, friction and good durability, and its appearance and color can be maintained for more than a hundred years. In addition, granite slabs are rich in color, with uniform and detailed lattice patterns. They are as bright as a mirror after polishing, have strong texture, and have a gorgeous and noble decorative effect. The finely cut boards have a simple and solid decorative style.

Because granite is not easily weathered and deteriorated, it is mostly used for wall foundations and exterior wall finishes. It is also used for indoor walls, columns, window sills, etc. And because of its high hardness and wear resistance, granite is often used as the floor in halls of high-end building decoration projects, such as the halls of hotels, restaurants, auditoriums, etc.

The surface processing degrees of granite plates are different, that is, their surface textures are different, so you should pay attention when using them. Generally, mirror panels and thin panels have a smooth surface and fine texture. They are mostly used for indoor walls and floors, and are also used for exterior wall decoration of some buildings. After being laid, the smoke will shine, the shapes and shadows will be reflected, and a sense of grandeur will suddenly appear. . Rough board has a rough surface texture and rough expansion. It is mainly used for outdoor wall foundation and wall decoration. It has a simple and natural feeling.

As for the selection of color and pattern of granite slabs, the decorative requirements of the entire building should be considered and coordinated with the color of the materials in other parts.

In addition, natural stone is expensive, so you should consider it carefully when choosing.

The effect of a single stone will be different from that of the entire veneer, so it cannot simply be determined based on the color and pattern of a single sample. It should be considered that if a large area is paved, it is best to learn from the overall effect that has been decorated with similar stones. Architectural finishes to avoid waste caused by improper material selection.

2) How to choose artificial marble

With the development of modern construction, decorative materials are required to be lightweight, high-strength, beautiful, and diverse. Artificial facing stone appeared in this situation. It is light in weight, high in strength, corrosion-resistant, pollution-resistant, easy to construct, and the pattern can be controlled artificially. It is an ideal decorative material for modern buildings. 1. Artificial marble can generally be divided into four categories according to the raw materials used in production and production processes:

(1) Cement-type artificial marble. This type of artificial marble uses various cements as binders and sand as fine bones. Crushed marble, granite, industrial waste, etc. are coarse aggregates, which are made by batching, stirring, shaping, pressure steaming, polishing, and polishing. It is commonly known as terrazzo.

(2) Polyester type artificial marble. This kind of artificial marble uses unsaturated polyester as a binder, stirs and mixes with quartz sand, marble, calcite powder, etc., and casts it into shape. Under the action of curing agent It produces a curing effect and is made through demoulding, drying, polishing and other processes. This method is often used to produce artificial marble in our country. Unsaturated polyester has good gloss and light color, and can be adjusted into different bright colors. This resin has low viscosity, is easy to shape, and cures quickly, and can be cured at room temperature.

(3) Composite artificial marble This kind of artificial marble is composed of inorganic materials and organic polymer materials. After the filler is bonded and formed with inorganic materials, the green body is then immersed in organic monomers to polymerize under certain conditions. For boards, the bottom layer is made of low-cost and stable inorganic materials, and the surface layer is made of polyester and marble powder.

(4) Sintered artificial marble This kind of artificial marble is made by mixing feldspar, quartz, pyroxene, calcite powder, hematite powder and a small amount of kaolin, etc., and preparing the blank with a slurry method. It is formed by dry pressing and sintered in a kiln at a high temperature of about 1000 C.

Among the above four types of artificial marble decorative panels, the polyester type is the most commonly used and has the best physical and chemical properties. The pattern is easy to design, reproducible, and suitable for many purposes, but the price is relatively high; the cement type is the cheapest, but has poor corrosion resistance and is prone to micro-cracks, and is only suitable for the other two production processes. It is rarely used.

Polyester artificial marble (often referred to as artificial marble) is processed to imitate the surface texture of marble. It has similar mechanical characteristics to marble, and the pattern can be controlled and determined by the designer. It has good reproducibility; and artificial marble is light in weight (about 25% lighter than natural marble), has high strength, thin thickness, good corrosion resistance, anti-pollution, and has good processability, and can be made into arc shapes. Curved surface and other shapes, easy to construct. The physical and mechanical properties of high-quality artificial marble can be equal to or better than natural marble, but the color and texture are not as beautiful and soft as natural marble.

Due to the influence of artificial marble raw materials. , many artificial marbles used in outdoor projects are not ideal. The main symptoms are rapid aging, large color changes, and large changes in gloss. After a period of use, the decorative panels become seriously deformed and the four corners are turned up. In some projects. It has to be fixed with expansion bolts. Therefore, artificial marble is not suitable for large-scale outdoor use and can be used for outdoor column and facade decoration, but when the height exceeds 1.2m, it should be fastened with steel wire or stainless steel parts.

Artificial marble can be used for indoor floor and wall decoration, and can also be used to make various sanitary ware, such as wash basins, bathtubs, toilets, etc. In addition, artificial marble can also be used to make handicrafts, such as imitation stone carvings, jade carvings, etc. Interior decoration.

3) How to buy stone

The quality of processed finished veneer stone can be identified from the following four aspects:

1 Observation, that is, observing the surface structure of stone with the naked eye.

Generally speaking, stone with a uniform fine-grained structure has a delicate texture and is the best stone; stone with a coarse-grained and unequal-grained structure has poor appearance, uneven mechanical and mechanical properties, and slightly poor quality. In addition, due to the influence of geological processes, natural stone often produces some fine pulsations and micro-cracks. The stone is most likely to break along these parts, so care should be taken to remove them. As for the lack of edges and corners, it affects the appearance even more, so you should pay special attention when choosing.

The second quantity is the size and specification of the stone. So as not to affect the splicing, or cause the patterns, patterns, and lines to deform after splicing, affecting the decorative effect.

The third listening is to listen to the sound of stone knocking. Generally speaking, a stone with good quality, dense and uniform interior and no microscopic cracks will have a crisp and pleasant knocking sound; on the contrary, if there are microscopic cracks or fine veins inside the stone or the contact between particles has become loose due to weathering, the knocking sound will be clear and pleasant. The sound is rough.

Four tests, that is, simple test methods are used to check the quality of stone materials. Usually a small drop of ink is dropped on the back of the stone. If the ink quickly disperses and leaches out, it means that the internal particles of the stone are loose or there are microscopic cracks, and the quality of the stone is not good. On the contrary, if the ink drops does not move in place, it means that the stone does not move. The stone is dense and has good texture.

In the selection of finished boards, because the stone raw materials are natural, the texture cannot be exactly the same, and the level of craftsmanship during mining and processing is also different. Most stones are graded, and many dealers also price based on quality. However, there are also a few who do not distinguish between quality products and pass them off as good products, thereby deceiving consumers. In order to avoid making mistakes, when decorating stone materials, it is best for ordinary consumers to contract the work but not the materials, and go to the building materials city to purchase in person. When purchasing stone, you should pay attention to the following aspects:

(1) Granite: Granite stone does not have colored stripes, most only have colored spots, and some are solid colors. Among them, the finer the mineral particles, the better, indicating that the knot is tight and strong.

(2) Marble slab: Marble has simple mineral composition and is easy to process. Most of them have fine texture and good mirror effect. Its disadvantage is that its texture is softer than granite, so it is easily damaged when hit by hard and heavy objects, and light-colored stone is easily contaminated. Try to choose a single color for marble flooring, and striped fabrics are more effective when choosing countertops. For other selection methods, please refer to the selection method of granite.

Title: Fourteen: Ceiling

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1) How to choose PVC materials for suspended ceilings

Suspended ceilings are a technique often used in interior design. People’s eyes tend to be in contact with them for more time, so the use of suspended ceilings Shape and artistic treatment obviously affect the spatial effect. The main materials for suspended ceilings include gypsum board, wood board, PVC plastic buckle board, glass, metal, etc.

PVC plastic gusset plate

1 Features: It is made of PVC as raw material and processed into tongue-and-groove profiles. It has the characteristics of light weight, easy installation, waterproof, moisture-proof, and moth-proof. , the color and pattern on its surface also changes a lot, and it is resistant to pollution, easy to clean, and has good sound insulation and heat insulation properties. In particular, flame retardant materials are added to the new process, so that it can extinguish fire immediately, making it safer to use. . It has low cost and good decorative effect, so it occupies an important position in home decoration ceiling materials and has become the leading material for ceilings in bathrooms, kitchens, balconies, etc.

2 Quality appraisal: When purchasing PVC ceiling profiles, be sure to ask the dealer for a quality inspection report and product inspection certificate. Visual inspection of appearance quality: The board surface should be smooth and smooth, with no cracks or bumps, and can be easily assembled and disassembled. The surface should be shiny and without scratches; the sound of tapping the board surface with your hand should be clear and crisp. In the inspection and test report, the product's performance indicators should meet: thermal shrinkage less than 0.3%, oxygen index greater than 35%, softening temperature above 80 degrees Celsius, flash point above 300 degrees Celsius, water absorption rate less than 15%, moisture absorption rate less than 4%.

3 Installation: First, pop up the elevation line on the wall, fix the pressure lines on both ends of the wall, and fix it firmly with the wall with cement nails.

Cut the board according to the actual size of the ceiling, and insert the board into the second board... The last board should be cut according to the actual size. Use a sharp knife when cutting, press the spring line with a steel ruler to cut, and do a little while loading. After bending, it can be inserted into the tongue and groove of the upper plate. After installation, the two sides are sealed with pressure strips.

4 Maintenance: PVC ceiling type is highly resistant to water and scrubbing. In daily use, it can be scrubbed with detergent and then washed with clean water; the seams between the boards are easily contaminated by oil stains. When cleaning, you can use a brush dipped in detergent to scrub and then rinse with clean water; be careful not to touch the lighting circuit with water.

Female) How to choose ceiling keels

Keels are an indispensable part of the ceiling decoration, including wooden keels and blue steel keels. When using wooden keels, please note that the wood must be dry. Nowadays, most home decorations use light steel keels that are not easy to deform and have fire-proof properties. When selecting, pay attention to the thickness of the keels, preferably not less than 0.6 mm.

Suspended ceiling metal keels are generally made of light steel and aluminum alloy. They have the characteristics of light weight, high stiffness, good fire and earthquake resistance, and easy processing and installation. According to the profile section, there are U-shaped keels and T-shaped keels. keel. Rulong brand partition wall keel has the advantages of light weight, high strength and good corrosion resistance. It can be used as the skeleton material of lightweight partition walls. It is mainly used with gypsum board and its products. It can also be used with other boards such as GRC board. , FT board, Ete board and other materials are used together.

In addition, when decorating, pay attention to the difference between the original galvanized keel and the post-galvanized keel that are not easy to rust. The original galvanized keel is commonly known as "snowflake board". It has snowflake-like patterns on it and is stronger than the post-galvanized keel.

In addition, it is best to use original galvanized keels that are not easy to rust for decoration, and avoid using post-galvanized keels. To distinguish between the two, it should be noted that the original galvanized keel is commonly known as "snowflake board". It has snowflake-like patterns on it and is stronger than the post-galvanized keel.

3) How to choose suspended ceiling materials

Suspended ceiling is a technique often used in interior design. People’s eyes tend to be in contact with it for more time, so the shape of the suspended ceiling and Artistic treatment obviously affects the spatial effect.

Environmental protection indicators of suspended ceilings

According to national environmental protection standards, the radioactivity levels of suspended ceiling materials are divided into three categories: (Mainly applicable to non-metallic and non-organic suspended ceiling materials, such as gypsum boards, etc. )

1. Class A decorative materials. The radioactive specific activities of natural radionuclides radium-226, thorium-232, and potassium-40 in decorative materials simultaneously meet the requirements of 1Ra≤1.0 and 1r≤1.3 are A Class decorative materials. The scope of production, sale and use of Class A decorative materials is not restricted.

2. Class B decoration materials: Class B decoration materials do not meet the requirements of Class A decoration materials but meet the requirements of 1Ra≤1.3 and 1r≤1.9. Category B decoration materials cannot be used for the interior cladding of Category 1 residential buildings, but can be used for the exterior cladding of such civil buildings and the interior and exterior cladding of all other buildings.

3. Class C decoration materials: Class C decoration materials that do not meet the requirements of Class A and B decoration materials but meet the requirements of 1r≤2.8 are classified as Class C decoration materials. Category C decoration materials can only be used for exterior finishes of buildings and outdoor purposes.

Note: Class I civil buildings: such as residences, senior apartments, nurseries, hospitals and schools, etc.

Class II civil buildings: such as shopping malls, stadiums, bookstores, hotels, office buildings, libraries, cultural and entertainment venues, exhibition halls and public transport waiting rooms, etc.

Classification, purchase, installation and maintenance of suspended ceilings

Suspended ceiling materials mainly include mineral wool board, gypsum board, wooden board, PVC plastic buckle board, glass, metal, etc.