Experts teach you how to choose a beautiful stone

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Nowadays, in home decoration engineering, stone is widely used in indoor local design, such as: window top, door stone, wave line, ground stone, decorative wall, stair step, bathroom top, cabinet top, etc

in the current home decoration engineering, stone is widely used in the local design of the interior, such as: window top, door stone, wave line, ground stone, decorative wall, stair step, bathroom top, cabinet top, etc. However, what kind of stones should be used in various parts of the room, how to select stones, how to calculate the amount of stones when purchasing, and what precautions should be taken during installation... Are you clear about these questions? Let's listen to the experts

some stone materials are forbidden indoors

Yang Guangqiang, chief engineer of KuoDa decoration, introduced that Chinese stone materials are divided into three categories A, B and C according to the level of radioactivity. According to the regulations, only category a can be used for home interior decoration, while category B and C are mostly used for outdoor decoration. There are mainly two kinds of natural stones: marble and granite. The radioactivity of marble is generally lower than that of granite, and most of them can be used for indoor decoration, while granite should not be widely used indoors, especially not in bedrooms, old people's houses and children's houses. Artificial stone depends on the ingredients added when it is made

many consumers will think that only natural stones are good stones, and artificial stones are certainly not as good as natural stones. This view is wrong. Not all natural stones are safe and reliable. For example, class C natural stones with high radioactivity cannot be used for indoor decoration at all, while most man-made stones can be used indoors after professional testing, and man-made stones are also divided into different grades according to the manufacturing process. Generally speaking, regular stone manufacturers and sellers can issue professional test reports. Consumers should first choose products with reliable quality

the materials used in different parts are different

artificial stone, which is made of unsaturated polyester resin as binder, natural marble or calcite, dolomite, silica sand, glass powder and other inorganic materials, as well as an appropriate amount of flame retardants, colorants, etc., through mixing, porcelain casting, vibration compression, extrusion and other methods of molding and curing. It is based on the problems that are easy to occur in the actual use of natural stone. It has made great progress in moisture-proof, acid proof, high temperature resistance and patchwork. Of course, man-made stone also has its shortcomings. The texture is relatively unnatural, so it is mostly used in cabinets that require more practicality, as well as kitchens, toilets and other places with poor environment. Windowsills, floors and other places that emphasize decoration are relatively less used

when selecting stones for interior decoration, it should be noted that the texture of stones in different parts is also different, and the materials should be selected according to hardness, color, wear resistance and other factors. The countertop of the cabinet, the door stone, the wave line and the stair step are mainly made of stones with relatively strong rock hardness, which are dark in color, easy to take care of, small in color difference, and full of layers, and will not produce a frivolous feeling; Stone materials with relatively weak rock hardness, diverse colors and beautiful textures can be selected for the floating window countertops, decorative walls, ground stones and bathroom countertops. For example, light colors are often selected for the floating window and the ground, which can give people a warm and quiet feeling and visually "expand" the area. It is best not to choose dark stone to pave a large area on the ground, which will make people feel "dark". If the decorative wall can choose beige or white stone, it looks atmospheric and concise. In addition, considering the strength of decoration and the bearing capacity of the house, we should try to choose thin plate stones

material selection should be tested first

the quality of stone depends on the quality of raw materials and processing technology. Under normal circumstances, good stones should have such characteristics: the surface is smooth, and there is no roughness when touching with hands; The front is bright, and the reflective effect is consistent when observing against the light, without flickering; The cutting edge is flat, and the cutting edge presents a straight line when viewed from the side, without jagged convex and concave points; The color is uniform, and there is no color difference on the surface of each stone; The texture is clear, and the texture of the same kind of stone is consistent, without obvious difference. The surface of high-quality stones does not contain too many variegated colors, the color distribution is uniform, and there is no obvious light and dark transition. There will be many irreparable "defects" in the processed inferior stones. Therefore, the pattern and tone of the surface is an important indicator to evaluate the quality of stones. If the processing technology and process are not qualified, the processed finished products will appear warpage, depression, color spots, stains, missing edges and corners, cracks, color lines, pits and other phenomena. Such stones are "defective products"

generally speaking, imported artificial stones have better performance. For example, imported artificial marble allows the scratch on the surface to be polished with sandpaper, which consumers can deal with by themselves. Many domestic artificial stones get worse as they are polished. When shopping, it's best to take a sample and pour soy sauce or oil on it, and conduct wear test

the measurement needs to calculate the loss

the prices of stones sold in the market vary greatly, from tens of yuan/square meter to thousands of yuan/square meter. Most products are sold in area, and some products are sold at the price of each piece or meter

no matter which part of the room chooses stone, it is calculated by area. If it is a regular rectangle, it is calculated by multiplying the length by the width. The irregular shape is calculated by multiplying the length of the longest part in the longitudinal direction by the length of the longest part in the transverse direction, and the excess part belongs to normal loss; In addition, the stone that needs to be polished also needs to increase the loss of 1-2 cm, and the stone with double grinding generally needs to increase the loss of 3 cm or more

when purchasing finished stones from manufacturers, merchants will charge installation fees and other fees in addition to the cost of raw materials; If you customize stone products, you normally have to pay the raw material fee, processing fee (edging, corner cutting, hole digging, hanging edge), transportation fee, upstairs fee, installation fee, etc. of the stone. It should be noted that some businesses will charge cutting fees on the excuse of cutting a small part of stones from large plates, and consumers can refuse to pay

do a good job of patchwork before the shop

buy stones, which are basically door-to-door installation by merchants. But the installation is not as easy as paving floor tiles, so we need to pay attention to some details. First of all, the stones should be parched (colored). Even the stones of the same batch will have some color differences and inconsistent textures. Therefore, the parquet link before paving is very important. It is necessary to make the color and pattern of the stones show the effect of gradual change after assembly, and then number them and mark them on the back. Do not choose the tool of liquid color pigment when marking, so as to prevent the liquid from penetrating into the stones and dyeing

when paving, first apply a layer of clear water slurry on the ground, then use cement mortar as the bottom layer, after thinning and flattening, pour clear cement slurry, and then paste the stone. The thickness of cement mortar base should be no less than 2 cm. No one should walk or negative pressure heavy objects within 8-12 hours after the stone is paved, so as to avoid empty shells or uneven. At the same time, it must be noted that some imported stones are pasted with plastic networks on the back, and the sheet networks must be torn off before installation

the installation sequence of stones is also exquisite. The door stone can be installed together with the floor tile or in front of the door sleeve line; The floating window top can be installed before the wall is leveled and the last putty is applied, which can not only make up the gap, but also won't pollute the wall; The stair step can be installed after the floor tiles are installed, and there will be no gap between the tiles and the stair step; Decorative walls, basins and cupboard tops can be determined according to the progress of the project

in addition, the owner also needs to provide some auxiliary materials. If light colored stones are installed, white cement and river sand shall be provided by yourself; Ordinary cement can be used for dark stones; If it is paved directly on the wood base, the owner also needs to prepare glass glue

maintenance do not wax at will

stone is not invincible, and care should be taken during use. No matter how good the stone is, its acid-base resistance is weak, and it is easy to be corroded by acid-base. Consumers should try to avoid exposing it to such substances; Its surface is mostly polished to avoid scratches by hard objects; In addition, the stone has certain air permeability. It is best not to cover the surface with other substances for a long time, so as not to affect its normal "breathing" and lead to changes in water content. It is also necessary to ensure the dryness of the surrounding environment. If the stone is in a humid environment for a long time, hydrolysis, bleaching and other changes will occur

care should be taken during maintenance, and some waterproof agents with quality assurance can be used appropriately. However, do not wax at will. There are many kinds of waxes on the market, including water-based wax, stearic acid wax, oily wax, acrylic wax, etc. These waxes basically contain acid and alkali substances, which will block the pores of stone materials, and are easy to be stained with dust to form wax scale, resulting in yellowing on the surface of stone materials; Moreover, most waxes contain ammonia, which will cause adverse effects on human body and environment after volatilization and decomposition





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