Ceiling material knowledge Raiders (construction)

1、Paper gypsum board

1) Construction method

Gypsum plasterboard is the most basic intermediate material in the ceiling project. It must be surface-decorated before it can be used. Therefore, the use of gypsum board is the same as the use of wood panels. It can be manufactured through sawing, planing, and nailing processes. The structure of the decorative articles can be completed through decoration of latex paint, wallpaper, and ceramic (waterproof gypsum board) as decoration.

2) Analysis of common problems

Phenomenon 1: The ceiling of the gypsum board has been completed for about half a year. Cracks begin to appear at the joints. With the continuation of the time, some cracks can reach 1-2mm.

The main reasons for the formation are:

1 The joint structure of gypsum board is not reasonable;

2 plates shrinkage and deformation, stiffness is poor;

3 poor quality of caulking putty;

4 Improper construction work.

Preventive measures include: selection of good-quality gypsum plasterboard and matching caulking putty, keel and fastening screws, spacing should be strictly in accordance with the design requirements in order to reduce the deformation of the plate and increase the strength; construction process is strictly prohibited tight joints, seams The debris should be removed; good quality putty must be used to fill the board seams, which must be preceded by the putty (30-40 minutes) before scraping a layer of 1mm thicker putty.

Phenomenon 2: Irregular wave patterns appear on ceilings. Cause Analysis:

1 Arbitrary arching, forming a non-uniform arch;

2 ceiling grille or uneven corners;

3 wood moisture content, resulting in shrinkage deformation;

4 keel joints are uneven with hard bends, resulting in uneven ceiling;

5 The distance between the suspenders or the suspenders is too large, resulting in irregular deflection of the keel;

6 The wooden boom is chapped and the keel falls after being forced; the steel is not tensioned when used as a suspender, and the keel falls after being forced; the suspender is suspended on the bracket of other pipes or equipment and is caused by the vibration or the fall of the bracket. Uneven ceiling;

7 Laggard joints are lax and deformed after stress.

Preventive measures: Ceiling timber should be made of high-quality wood, such as pine, fir, and its moisture content should be controlled within 12%. The keel should be straight and there should not be twists in the transverse section. The ceiling construction shall be leveled on the perimeter wall according to the design elevation. The horizontal line shall prevail throughout the loading of nails. The arching height of the indirect horizontal line shall be 1/200 of the short span of the room, and the vertical crown shall be evenly suspended. Forced nodes should be nailed tightly and firmly to ensure the overall rigidity of the keel.

2, mineral wool sound-absorbing board

1) Construction points

1 It can be installed only after installation and commissioning of heating, ventilation and air-conditioning systems;

2Before gypsum, cement and other wet works are completed and dried before installation;

3No other thermal insulation and sound insulation materials such as glass wool and rock wool can be laid on the ceiling of mineral wool;

4 After the construction, no paint treatment can be performed on the surface of the mineral wool ceiling, otherwise it will affect the sound absorption and fire resistance of the ceiling.

2) Analysis of common problems

Color difference, bending or falling.

Preventive measures: 1 Accurately calculate the amount of the mineral wool ceiling of the same brand and the same lot to be used in the same place;

2 Use keels and accessories that are compatible with mineral wool;

3 The keel should be hung firmly and adjust the level to avoid bending or falling.

3, plastic PVC buckle board

1 ) Construction points

Firstly, we should pop up the elevation line on the wall, fix the pressure lines at both ends of the wall, fix it firmly with cement nails and the wall surface, and do the plate according to the actual size, insert the plate into the press line, and the slats should be outward. After the installation is correct, fix it on the keel with self-tapping screws, and then insert the second board. The last board should be cut according to the actual size. Use a sharp knife when cutting and press the elastic wire with a steel rule. Cut, insert a little bend to insert the block plate mouth, after loading the sides with a pressure strip sealing.

2) Analysis of common problems

The surface is uneven, the joints are not strict, not straight, the corners of the frame are not straight and lax. Cause Analysis:

1 The keel has a large moisture content, resulting in shrinkage deformation;

2 Bone joints are uneven;

3 The batten is not fixed firmly, and the corner cut is not standard enough;

4 There are too few fixed points for each slat and deformation occurs after stress.

Preventive measures: 1 Quality wood should be selected, and its moisture content should be controlled within 12%;

2 The keel should be straight and should not be distorted and there must be a transverse section through the section;

3 The border angle should be sharpened with a sharp knife;

4 The slats should be fastened tightly and firmly to prevent deformation after stress.

3) Maintenance and maintenance

PVC ceiling profiles are very resistant to water and scrubbing. After daily use, the cleaning agent can be used for scrubbing and clean with water. The space between the plates can be easily contaminated by oil stains. After cleaning, the brush can be used to clean the surface with clean water, and the lighting circuit should not be exposed to water. If the PVC suspended ceiling profile is damaged, the update is very convenient. As long as one end of the bead is removed, the panel is removed from the bead piece by piece, the damaged panel is replaced with a new one, and then the new one is pressed again. The color of the board and the old board need to be the same, do not have color.

4, metal products ceiling

1) Construction points

1 Hang the main keel and adjust the level;

2 Install according to the direction of the board surface, and use appropriate force;

3 During installation, avoid stumbling between the slats and other objects;

4 After the installation is completed, remove the surface protective film in time.

2) Analysis of common problems

Color difference, uneven surface, seam warping, joints are not straight.

Preventive measures: 1 Accurately calculate the amount of use, the same place should use the same brand, the same number of metal products ceiling;

2 use the original original accessories, supporting keel;

3 The level of keel should be adjusted well;

4 Pay attention to the direction when installing the pinch plate.

Living room ceiling aisle ceiling decoration cement paint glass heating craft glass

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