The plate may be the material that most of the decoration owners care about most. The commonly used ones are the following ones. The correct selection of the plate is the prerequisite for ensuring the overall style of the room and the quality of the decoration.
Gypsum board:
It is characterized by light weight, low cost, environmental protection, and convenient construction. It is mainly used for ceilings and partition walls.
Divided into ordinary, fire-resistant, water-resistant and other varieties.
Because the production process is relatively low, the market price of gypsum board varies greatly.
The main quality problems manifest in two aspects:
Deviations in size; large area per unit area.
In general, the thickness of poor quality gypsum plasterboard is less than the national standard 9.5mm minimum thickness or uneven thickness.
Severe dimensional deviation will directly affect the application effect and construction quality of the gypsum plasterboard, and damage the interests of consumers. The mass per unit area of ​​the plate exceeds the standard, indicating that the core is not foamed or foamed enough. Such a product has poor flexibility and is easily deformed. Brittle, and its sound absorption and insulation properties are affected.
The standard gypsum plasterboard single weight can neither exceed the standard, but it is not as light as possible, because the excessive foaming dose leads to an increase in the micropores in the core and the strength is reduced. When the gypsum board is fixed in the construction, the plaster is used. The force of the plate on the nails is reduced, which in turn affects the firmness of the connection between the gypsum board and the keel. In the future, the gypsum board is prone to deformation, cracks, and other problems.
Therefore, when selecting the plasterboard, one should look at the second volume, three knocks and four tests, and choose comprehensively from the aspects of brand, size, and flatness.
(1) Look at the surface of the sheet material under bright light, smooth, no holes, stains, cracks, missing corners, uneven colors, and incomplete cases. The upper and lower layers of kraft paper are smooth and clean. From the side, it is observed whether the plaster texture is dense and whether there is any loose powder or empty drum.
(2) When the knock is struck, a very solid partial rigid sound is used to indicate that the plasterboard is dense and tight, such as a very empty sound indicating that the board may be empty or loose in texture. In addition, the elasticity and the weight of the gypsum board are also basically proportional to the quality of the gypsum board.
(3) The quality grade of decorative gypsum board is divided according to size tolerance, flatness and right angle deviation. Deviations in size, flatness, and right-angle deviations must meet the eligibility criteria. Excessive data deviations indicate that the internal quality is flawed. The resulting surface consequences are uneven surface and uneven patchwork.
(4) Inspection Normally, the regular brands and manufacturers will mark the name, trademark, quality grade, manufacturer name, production date, moisture-proof, light-duty, and product marking of each product on each packing box. Small manufacturers or counterfeit products either fail to print or not.
Blockboard:
Commonly known as Daxinban, it is one of the most important materials in decoration.
The cores are made of natural wood sticks with very thin veneer on both sides. As the name implies, it can be used for furniture and wooden doors, door covers, heating covers, curtain boxes, etc. The waterproof and moisture-proof properties and excellent nail holding performance are good. For particleboard and MDF. Ordinary landlords can purchase large core boards through the following steps:
Look at the brand, to see if the manufacturer’s trademark, production address, and anti-counterfeiting mark are products of regular manufacturers. General genuine products are marked organically on the front and side.
According to the report, whether or not the release of formaldehyde in the product test report is less than or equal to 1.5 mg per litre. General regular manufacturers have test reports, formaldehyde detection values ​​should be as low as possible; moisture content. The wood moisture content in Beijing should be 8% to 12%. The high-quality large-core boards should be dried and the moisture content should be up to the standard. The water content of poor quality large core boards often does not meet the standard.
Look at the appearance to see whether the Daxin board surface is smooth and smooth. The high-quality big core board is double-sided sanding, and the hand feels smooth; whether there is warping, deformation, whether there is blistering, depression; the thickness is 16mm, 19mm, 22mm , 25 mm and several other specifications, commonly used in home decoration thickness 19 mm, the size of the size of 1220 mm × 2440 mm. The sides should be straight and straight. The error between the two diagonal lines must not exceed 0.2%, and the non-straightness of the four sides must not exceed 0.3%.
Fourth, look at the internal structure, you can open the blockboard skin at the scene or construction to observe whether the internal wick is even and neat, the gap is as small as possible; the width of the core can not exceed 2.5 times the thickness, or easily deformed; Core strips should be free of rot, breakage, wormholes, knots, etc. In general, authentic core boards use steam drying, lighter shades, lighter, lighter, lighter weights. Pay attention to general pine, poplar, The color of the paulownia core is lighter, the color of the rayon core is heavier, but the quality of the rayon core is better.
Whether the arrangement of core strips is even and tidy, whether there is filled putty, the gap is as small as possible, whether the core strip is rot, crack, wormhole, thrift, etc. Usually, the inner quality of the large core board with good appearance quality is correspondingly good. some.
Smell the smell, if the large core plate emits fragrance wood odor, indicating less formaldehyde emission; if the smell is pungent or mild, indicating more formaldehyde release or damp wood, or do not buy.
In addition, add a phrase “must meet the national standards†on the purchase contract or invoice, and at the same time it is best to leave a sample in the construction. Once the project is completed, it is found that the indoor environment pollution caused by Daxinban quality problems can be used as a judgment. The basis of responsibility. Because according to the requirements of national standards, from July 1, 2002, large core boards that do not meet the national standards are not allowed to be sold in the market.
Plywood:
It is also one of the materials that are widely used in decoration. Plywood is made of logs. It is cut into large sheets along the annual rings. After drying, the textures overlap and overlap.
The number of layers of wood chips is odd, usually three to nineteen layers, and adjacent wood chips are perpendicular to each other when they are formed.
Plywood is more commonly used decorative veneer plywood, that is, the use of natural wood veneer or artificial wood affixed to the plywood surface of the plate, commonly known as "decorated panel" "plywood."
Natural veneer and wooden veneer are excellent natural woods. They are thin wood chips made by slicing or rotary cutting. Commonly used species are willow, oak, beech, maple, cherry, walnut, flower buds, Red, white, pear, Sapele, red cat's eyes, white cat's eyes, etc. For dozens of species, the surface wood texture is the texture of natural species. The general specifications are 2440 mm long, 1220 mm wide and 3 mm thick.
You can start with the thickness when you choose.
Gypsum board:
It is characterized by light weight, low cost, environmental protection, and convenient construction. It is mainly used for ceilings and partition walls.
Divided into ordinary, fire-resistant, water-resistant and other varieties.
Because the production process is relatively low, the market price of gypsum board varies greatly.
The main quality problems manifest in two aspects:
Deviations in size; large area per unit area.
In general, the thickness of poor quality gypsum plasterboard is less than the national standard 9.5mm minimum thickness or uneven thickness.
Severe dimensional deviation will directly affect the application effect and construction quality of the gypsum plasterboard, and damage the interests of consumers. The mass per unit area of ​​the plate exceeds the standard, indicating that the core is not foamed or foamed enough. Such a product has poor flexibility and is easily deformed. Brittle, and its sound absorption and insulation properties are affected.
The standard gypsum plasterboard single weight can neither exceed the standard, but it is not as light as possible, because the excessive foaming dose leads to an increase in the micropores in the core and the strength is reduced. When the gypsum board is fixed in the construction, the plaster is used. The force of the plate on the nails is reduced, which in turn affects the firmness of the connection between the gypsum board and the keel. In the future, the gypsum board is prone to deformation, cracks, and other problems.
Therefore, when selecting the plasterboard, one should look at the second volume, three knocks and four tests, and choose comprehensively from the aspects of brand, size, and flatness.
(1) Look at the surface of the sheet material under bright light, smooth, no holes, stains, cracks, missing corners, uneven colors, and incomplete cases. The upper and lower layers of kraft paper are smooth and clean. From the side, it is observed whether the plaster texture is dense and whether there is any loose powder or empty drum.
(2) When the knock is struck, a very solid partial rigid sound is used to indicate that the plasterboard is dense and tight, such as a very empty sound indicating that the board may be empty or loose in texture. In addition, the elasticity and the weight of the gypsum board are also basically proportional to the quality of the gypsum board.
(3) The quality grade of decorative gypsum board is divided according to size tolerance, flatness and right angle deviation. Deviations in size, flatness, and right-angle deviations must meet the eligibility criteria. Excessive data deviations indicate that the internal quality is flawed. The resulting surface consequences are uneven surface and uneven patchwork.
(4) Inspection Normally, the regular brands and manufacturers will mark the name, trademark, quality grade, manufacturer name, production date, moisture-proof, light-duty, and product marking of each product on each packing box. Small manufacturers or counterfeit products either fail to print or not.
Blockboard:
Commonly known as Daxinban, it is one of the most important materials in decoration.
The cores are made of natural wood sticks with very thin veneer on both sides. As the name implies, it can be used for furniture and wooden doors, door covers, heating covers, curtain boxes, etc. The waterproof and moisture-proof properties and excellent nail holding performance are good. For particleboard and MDF. Ordinary landlords can purchase large core boards through the following steps:
Look at the brand, to see if the manufacturer’s trademark, production address, and anti-counterfeiting mark are products of regular manufacturers. General genuine products are marked organically on the front and side.
According to the report, whether or not the release of formaldehyde in the product test report is less than or equal to 1.5 mg per litre. General regular manufacturers have test reports, formaldehyde detection values ​​should be as low as possible; moisture content. The wood moisture content in Beijing should be 8% to 12%. The high-quality large-core boards should be dried and the moisture content should be up to the standard. The water content of poor quality large core boards often does not meet the standard.
Look at the appearance to see whether the Daxin board surface is smooth and smooth. The high-quality big core board is double-sided sanding, and the hand feels smooth; whether there is warping, deformation, whether there is blistering, depression; the thickness is 16mm, 19mm, 22mm , 25 mm and several other specifications, commonly used in home decoration thickness 19 mm, the size of the size of 1220 mm × 2440 mm. The sides should be straight and straight. The error between the two diagonal lines must not exceed 0.2%, and the non-straightness of the four sides must not exceed 0.3%.
Fourth, look at the internal structure, you can open the blockboard skin at the scene or construction to observe whether the internal wick is even and neat, the gap is as small as possible; the width of the core can not exceed 2.5 times the thickness, or easily deformed; Core strips should be free of rot, breakage, wormholes, knots, etc. In general, authentic core boards use steam drying, lighter shades, lighter, lighter, lighter weights. Pay attention to general pine, poplar, The color of the paulownia core is lighter, the color of the rayon core is heavier, but the quality of the rayon core is better.
Whether the arrangement of core strips is even and tidy, whether there is filled putty, the gap is as small as possible, whether the core strip is rot, crack, wormhole, thrift, etc. Usually, the inner quality of the large core board with good appearance quality is correspondingly good. some.
Smell the smell, if the large core plate emits fragrance wood odor, indicating less formaldehyde emission; if the smell is pungent or mild, indicating more formaldehyde release or damp wood, or do not buy.
In addition, add a phrase “must meet the national standards†on the purchase contract or invoice, and at the same time it is best to leave a sample in the construction. Once the project is completed, it is found that the indoor environment pollution caused by Daxinban quality problems can be used as a judgment. The basis of responsibility. Because according to the requirements of national standards, from July 1, 2002, large core boards that do not meet the national standards are not allowed to be sold in the market.
Plywood:
It is also one of the materials that are widely used in decoration. Plywood is made of logs. It is cut into large sheets along the annual rings. After drying, the textures overlap and overlap.
The number of layers of wood chips is odd, usually three to nineteen layers, and adjacent wood chips are perpendicular to each other when they are formed.
Plywood is more commonly used decorative veneer plywood, that is, the use of natural wood veneer or artificial wood affixed to the plywood surface of the plate, commonly known as "decorated panel" "plywood."
Natural veneer and wooden veneer are excellent natural woods. They are thin wood chips made by slicing or rotary cutting. Commonly used species are willow, oak, beech, maple, cherry, walnut, flower buds, Red, white, pear, Sapele, red cat's eyes, white cat's eyes, etc. For dozens of species, the surface wood texture is the texture of natural species. The general specifications are 2440 mm long, 1220 mm wide and 3 mm thick.
You can start with the thickness when you choose.
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