There are various types of suspended ceilings, including light steel keel gypsum board ceilings, wooden keel gypsum board ceilings, integrated ceilings, etc.; ceiling materials include light steel keels, metal connectors wooden keels, gypsum board, and joinery boards. , density board, multi-layer board, decorative panel, etc. Construction and installation also have their own particularities. How to select materials, install them reasonably, and ensure safety and reliability?

Light steel keel

Light steel keel is one of the most commonly used ceiling materials. It is made of high-quality continuous hot-dip galvanized sheet as raw material and rolled by cold bending process. Metal frame material is mainly used to build brackets for suspended ceilings and partition walls.

Light steel keels are moisture-proof and fire-proof. The steel is hard and has strong impact resistance. It is simple, convenient and time-saving to install, so it is more popular among owners. However, light steel keels also have shortcomings. They are not suitable for special shapes and are only suitable for straight lines and simple right-angle shapes.

How to choose light steel keel?

When purchasing light steel keels, you should carefully check the galvanized layer of the light steel keels, mainly to check whether the galvanizing is complete and whether the skin is peeling off and other issues. After galvanizing, the surface of good quality light steel keels is generally snowflake-shaped with clear patterns, and has been treated to prevent rust. The picture below shows the zinc-coated components.

In addition, pay attention to check whether the surface of the light steel keel is smooth, straight and without deformation, whether there is damage and defects, and whether there are burrs in the incisions.

There are many models of light steel keels according to different ceilings and walls.

The light steel keels of suspended ceilings are divided into main keels and secondary keels. The secondary keels are mainly used in conjunction with the main keels. The main keel models are divided into three series: D38, D50 and D60.

When purchasing light steel keels, in addition to paying attention to the model, you should also choose the cross-sectional shape.

The cross-sectional shapes are mainly divided into four categories:

V-shaped, C-shaped, T-shaped and L-shaped.

V-shaped keel is mainly used for the main keel bracket of the suspended ceiling, C-shaped keel is used for the load-bearing keel of the partition, T-shaped keel and L-shaped keel are mainly used for the ceiling without people, T-shaped keel is the main keel, L-shaped keel The shape is a side keel.

Wooden keel

Wooden keel, commonly known as wooden square, is a wooden strip processed from wood. Wood keel is one of the most commonly used frame materials in home decoration. Wooden keels are mainly divided into: ceiling keels, vertical wall keels, floor keels, hanging keels, etc. The advantage of wooden keel is that it is cheap and easy to construct. However, wooden keels themselves also have many problems, such as being flammable and prone to mildew and decay.

The wooden keels of the ceiling are generally camphor pine and white pine keels, among which pine is the most common. Wooden keels have the characteristics of simple operation, convenient construction, and easy adjustment. Its main function is to support ceilings, floors, wall skirts, etc., which is equivalent to brackets.

What are the specifications of wooden keels?

Choose different specifications according to different parts of use. The wooden keels used for suspended ceilings are divided into primary and secondary ones:

The specifications of the main keel are generally 30mmX40mm, 40mmX60mm,

The specifications of the secondary keel (auxiliary keel) are generally 20mmX30mm, 25mmX35mm, 30mm

These numbers are usually difficult to remember. It is recommended that you bookmark this article so that you can refer to it when needed.

How to choose wooden keels?

High-quality wooden keels are red in color and have clear texture. Second, look at the details. There should be no scars, bark, insect holes or cracks on the surface. Third, look at the merits. When selecting wooden keels, make sure they are straight and bent; bending the wooden keels will cause the entire frame to deform.

Secondly, the quality of wooden keels can also be identified through the moisture content.

Although the moisture content measurement standards vary in different regions, most of them should not exceed 15. High-quality wooden keels have high bone density, and the intuitive feeling is that they are relatively solid when held in the hand. They are elastic when pressed with the hand, and are easy to recover after bending. The sound is crisp when struck, and there is no obvious mark when pressed with a fingernail.

Finally, check whether the cross-sectional dimensions are accurate.

Gypsum board

Gypsum board has been used for more than ten years and is widely used in the interior of various buildings such as residences, office buildings, shops, hotels and industrial plants. Partition walls, wall cladding panels (replacing wall plaster layers), ceilings, sound-absorbing panels, and paper-faced gypsum boards are both covering layers and decorative layers. Their environmental protection has been proven for a long time.

Common specifications of gypsum board

Length: 1800, 2100, 2400, 2700, 3000, 3300, 3600;

Width: 900, 1200

Thickness: 9.5, 12.0, 15.0, etc.

We can also produce plates of other specifications and sizes according to user requirements.

What are the common classifications of gypsum boards?

Ordinary paper gypsum board: ivory white paper board core and gray board core are the most economical and practical varieties. Generally, ordinary gypsum boards with a thickness of 9.5mm are often used for suspended ceilings, and 12mm thick ones are used for partition walls.

Water-resistant paper-faced gypsum board: Its board core and protective paper have been waterproofed. According to the requirements of the national standard, the paper surface and board core of water-resistant paper-faced gypsum board must meet certain waterproof requirements ( The surface water absorption shall not exceed 160 grams, and the water absorption rate shall not exceed 10). Water-resistant gypsum board is suitable for use in places where the continuous relative humidity does not exceed 95, such as toilets, bathrooms, etc.

Fire-resistant gypsum board: Fire-resistant materials and a large amount of glass fibers are added to the core of the board. If you cut the gypsum board, you can see a lot of glass fibers from the cross section. Good quality fire-resistant gypsum boards will use alkali-free glass fiber with good fire resistance.

Moisture-proof paper-faced gypsum board: It has high surface moisture-proof performance, and the surface water absorption rate is less than 160g/㎡. Moisture-proof gypsum board is used for ceilings, partitions and veneer walls in rooms with high humidity.

How to choose gypsum board?

When choosing gypsum board, you should pay special attention to its paper surface. Generally, if the paper surface is damaged, the gypsum board will easily crack. The paper surface of high-quality gypsum board has been specially treated to make it very tough and will not be damaged. In addition, the adhesion between the gypsum core board and the paper surface must be strong. Gypsum boards with weak paper adhesion are prone to damage. When purchasing gypsum board, you can try to peel off the paper surface to feel it.

A smooth appearance is important. Since gypsum boards are usually directly painted with emulsion paint and other finishes, the flatness and smoothness of their surfaces are very important. The surface of high-quality gypsum board should be flat and smooth, without defects such as pores, stains, cracks and missing corners, uneven colors, and incomplete patterns.

At the same time, the upper and lower layers of kraft paper on the gypsum board should be firmly pasted to prevent cracking of the gypsum board and prevent screws from cracking the gypsum board.

Look at the side to see whether the gypsum board is dense and whether there is any hollowing. As the saying goes, "the denser the board, the more durable it is."

Check the texture, elasticity and weight of the drywall. Knock the gypsum board with your hands. If it makes a solid sound, it means the gypsum board is tight and durable. If it makes a hollow sound, it means there is hollowing in the board and the quality is not good.

Secondly, you can lift both ends of the gypsum board and observe the curvature in the middle. A good gypsum board will not have too much curvature. You can also shake both ends of the gypsum board. The one that is not broken is a qualified product

Look at the packaging box of the regular product, which should have the product name, trademark, quality grade, manufacturer name, and production date. As well as signs such as moisture-proof, handle with caution and product markings, the quality grade of decorative gypsum board is divided according to the allowable deviation of size and right-angle deviation of flatness. The higher the grade, the smaller the deviation.

Blockboard

Blockboard is commonly known as large core board. The upper and lower sides are solid three-ply boards and the middle is glued spliced ??wood. The so-called "big core" actually refers to the middle The "core" is very thick. Blockboard has high transverse bending stiffness, good nail-holding power and waterproofness. Large-core boards are mostly used for large-scale carpentry work that must be nailed with nails, such as the base layer of suspended ceilings.

How to choose blockboard?

When purchasing blockboard, what people are most worried about is its environmental protection. Because a lot of glue is used in blockboards, the formaldehyde content is high. Therefore, when purchasing, pay attention to check the content of toxic substances. An easy way to check is to smell it. If there is a pungent smell, you can give up the idea of ??buying it. This sniffing method is not scientific, but regardless of whether the smell is toxic or not, it is definitely not suitable for home use.

Blockboards must have clear environmental standards. When purchasing, you must purchase E1 or above products from regular manufacturers.

Generally, the thicker the skin of the blockboard, the better, because its load-bearing capacity and resistance to deformation will also be enhanced.

Blockboard has good screw-holding power and high strength. It has the characteristics of solidity, sound absorption, and heat insulation. Its moisture content is not high, between 10 and 13. It is easy to process and has the most wide range of uses.

The price of blockboard is directly proportional to the quality. Generally speaking, large core boards that are lower than the market price are usually unqualified. Especially for branded products, those so-called "branded goods" whose prices are too different from the exclusive prices can basically be concluded to be counterfeit goods.

Aluminum gusset plate

Aluminum gusset plate is a special material that is light and durable. It is widely used in home decoration ceilings. It has a variety of excellent properties and is suitable for kitchens and bathrooms. It can not only achieve a good decorative effect, but also has a variety of functions, so it is very popular among consumers. This is the origin of the aluminum gusset ceiling.

The integrated ceiling integrates the four major functions of heating, ventilation, lighting and gusset ceiling, that is, the installation of heating, ventilation, lighting, sound effects in the kitchen and bathroom, and the installation of metal ceilings are all in one step. Completed by the manufacturer.

Not all metal ceilings are environmentally friendly, but there are advantages and disadvantages. Inferior metal plates contain heavy metals, which are harmful to the human body. They have high iron content and are prone to rust. The inferior coatings can easily breed bacteria. Some high-quality metal plates are environmentally friendly.

How to choose aluminum gusset plate ceiling?

1. When purchasing an aluminum gusset ceiling, you should look at the aluminum, film, and backing. Check the quality of the aluminum gusset from these three aspects. "The first thing is to check the material of aluminum. Since it is difficult for ordinary consumers to see the material of aluminum, it is recommended that consumers check the hardness of the gusset plate themselves, and then check whether the paint surface is smooth, without burrs, and whether there is any color difference.

2. Secondly, check the film. Consumers can pull the edge of the gusset plate. If the film peels off, it means that the film and the gusset plate are not tightly bonded. Thirdly, look at the back cover (the back of the gusset plate). This is used by many A part that consumers ignore. The back cover usually needs to be anti-corrosion treated and can be picked out by hand. If the back cover can be picked off, it means that the material is not good. Generally, regular manufacturers will print the manufacturer's logo and production date on the back cover. .

3. Finally, it is recommended to choose brand products. Brand products are relatively standardized in terms of quality and service, and they are more secure. There is a product certificate. The cover panel should have a factory certificate.

There should be quality inspection data for project acceptance.