Process flow of gypsum board ceiling installation

Process flow of gypsum board ceiling installation:

1. Measurement and setting out:

Generally, the overall horizontal and vertical line in the room will be measured by laser level testing instrument to provide a clear reference for the installation of ceiling, and the ceiling elevation control line will be popped along the wall or column with ink line.

2. Fixed boom

The suspender is the primary component to bear the weight of the ceiling and should be firmly fixed.

One end of the suspender matched with the light steel keel is an expansion bolt, which is vertically rooted on the ceiling to fix the suspender; The other end is a hanging buckle with bolts, which is used to fix the keel. The distance between the buckle and the expansion bolt is adjustable, and the height of the metal sheet shall be consistent during installation.

3. Keel installation

Keel installation is the highlight of ceiling work, which is divided into four steps:

(1) Installation of side keel

As the first keel to play, the height of the side keel and the height of the ceiling are set. Therefore, when installing the side keel, it must be parallel to the snapped ceiling elevation control line, otherwise the ceiling will be crooked. Of course, the side keel often has its own horizontal line. Generally, the side keel shall be double fixed, glued once and nailed once, so as to be firm.

In addition, the distance between nailing and fixing the side keel shall not be greater than the distance between the secondary keel of the ceiling, generally 300 ~ 600mm, otherwise it may deform and affect the stability and quality of the final project.

(2) Installation of main keel

The keel continuous with the suspender is the main keel, and the center of the suspender shall be on the centerline of the main keel.

(3) Installation of secondary keel

The metal secondary keel shall be fixed with special connectors and main keel with nails.

The secondary keel and side keel must be butt jointed without overlap. In other words, the height of the secondary keel shall be consistent with the side keel Generally speaking, the spacing of secondary keels shall not be greater than 600mm.

(4) Calibration and inspection

After the keel is installed, the decorative panel can not be installed in a hurry. The flatness of the keel must be corrected first to ensure that the keel is installed stably. Otherwise, the problem is found after the whole installation. It will be too much trouble to repair it~

The keel leveling standard is: each keel is horizontal, there is no hard bending at the joint, the stress points are closely combined, and there is no arching.

After leveling, shake the keel up, down, left and right by hand. If there is no instability, its stability will meet the standard.

4. Install the trim panel

The size of the gypsum board should match the distance between the keels. If the gypsum board is too large, it needs to be cut first. A board saw can be used for large-area sheet metal cutting, and a knife can be used directly for small-area sheet metal cutting. When cutting, the angle shall be controlled, and the stubble and broken edge of the incision shall be trimmed straight, otherwise the plate and plate can not be put together. Generally, the long side of the whole gypsum board shall be consistent with the laying direction of the secondary keel.

The Gypsum Veneer and light steel keel are generally fixed with countersunk head self tapping screws.

Gypsum board is nailed to the side keel and secondary keel. Attention shall be paid to fixation: each board shall be fixed radially from the middle to the four sides, and cannot be fixed from multiple points around at the same time. In this way, the gypsum board will be very flat without bending edges, bulges and other phenomena. When the self tapping screws are used to lay and nail the paper gypsum board, the nail distance should be 150-170mm, and the screws should be perpendicular to the board surface.

When installing the trim panel, try to use the whole panel, otherwise it will be easy to crack along the gap in later use.

5. Putty and emulsion paint

Dust on the surface of gypsum board shall be removed before puttying. The nail holes of the ceiling shall be painted with antirust paint and plastered with caulking gypsum. Joints shall be leveled with caulking gypsum; After the gypsum is completely dry, it shall be pasted with kraft paper tape for crack prevention treatment.

After plasterboard is finished, anti rust paint shall be applied at the place where self tapping screws have been applied. Some light suspended ceilings do not install the main keel, and there is no suspender accordingly. However, such a ceiling can only be used in small places such as corridors or room corners. If the whole house is suspended, the main keel and suspender are still necessary.

Precautions for ceiling construction

In order to ensure that the ceiling is beautiful and firm, you should also pay attention to the following things during construction:

1. When installing gypsum board in rainy season, the humidity of working environment shall be controlled below 70% as far as possible; Rain proof and moisture-proof measures shall be taken for the transportation, handling and storage of various ceiling materials. Otherwise, the material is prone to mildew, rust, deformation and other phenomena.

2. The trim panel shall be inspected one by one before installation, and the edges and corners must be regular and consistent in size; Only in this way can the joints be smooth and smooth after installation, and the appearance value of the ceiling is high.

3. Various holes are often reserved in the light steel framework, such as lamp openings and vents. Keels and connectors shall be set at these holes in accordance with the requirements of construction specifications and atlas to avoid deformation and cracks around the holes.

4. The keel shall be directly fixed on the ceiling and wall, and shall not be hung on the pipeline or equipment. After the hanger is adjusted, it must be fixed and tightened, and the connection between light steel frames must be firm and reliable to avoid frame deformation, resulting in uneven or even cracking of the top plate.