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The ceiling refers to the top decoration of the living environment of the house. Simply put, it refers to the decoration of the ceiling, which is an important part of the interior decoration.
Ceiling classification:
The ceiling decoration material is the main basis for distinguishing the name of smallpox. It can be roughly divided into light steel keel plaster ceiling, wood keel plaster ceiling, splint ceiling, profiled aluminum buckle ceiling, square plating aluminum buckle ceiling, painting. Glass ceilings and so on. For ceilings made of aluminum gussets, we usually call it "aluminum gusset ceilings". The home improvement is commonly used wood keel gypsum board ceiling.
Second, wood keel gypsum board ceiling common materials and identify wood keel gypsum board ceiling common materials wooden keel, gypsum board, nine wood board keel gypsum board ceiling common material identification:
Wood keels generally use dry, non-deformed, non-deformation, non-oil quality fir, pine side. Common specifications are: 35*25mm, 5*25mm, 20*30mm.
Gypsum board specifications are 1220*2440mm. Use ** sheet material (4-5mm for ceiling materials, 9-18mm for decorative materials).
Fire-retardant paints comply with local fire safety regulations or oil-based fire retardant paints provided by a special brand or manufacturer approved or designated by the local fire department.
Third, the wooden keel gypsum board ceiling construction process should first determine the position of the keel in the wall top surface elastic line.
After the surface of the keel has been fireproofed, the combination can begin. The worker will use a nail gun to fix it at a 45-degree angle between the two keel joints. At this time, it is necessary to master the strength to prevent the keel from cracking.
After nailing the keel, it is necessary to fix the frame on the wall. At this time, it is necessary to carefully check whether the difference between the frames is not more than 300mm to have sufficient fastness. Otherwise, the gypsum board on it easily sinks and breaks.
The next step is to officially put on the plasterboard. It is best to allow the workers to use stainless steel drywall screws to fix the gypsum board. Such nails will not rust, and the gypsum board will be guaranteed for a long time in the future.
The nail holes on the gypsum board are usually treated with rust-proof eye putty, and its practical cement-filled nail eyes are a way to save more money and less effort. And the effect after the treatment is not worse than nail eye putty.
The gap between the two plasterboards must be handled in the next step, otherwise there will be obvious cracks in the future. General workers will use 901 glue and gypsum powder after mixing.
Afterwards, it is best to use anti-crack tape on the surface to prevent the top surface from cracking due to thermal expansion and contraction. When attaching, it is necessary to pay attention to the use of a scraper to remove the air bubbles and to make the tape and plasterboard completely and tightly combined.
IV. Acceptance of gypsum board ceiling of wooden keel The ceiling keel shall not be twisted or deformed. The wooden keel has no bark and insect eyes, and fire prevention and antiseptic treatment are carried out according to the regulations. The keel installation is firm and reliable, and smooth around;
The ceiling panel of the ceiling panel is tightly connected with the keel, and the yin and yang angles are squared and the arching is correct.
The gypsum plaster board can be fixed with countersunk head screws and keels. The screw caps sink into the surface of the board. The top surface of the rust prevention screws should be treated with rust prevention. The cracks in the board seams should be cracked and caulking. When installing double deck boards, the upper and lower board seams should be stagger.
The joints between the cover panel and the wall surface, the curtain case and the light groove shall be tightly seamed, and the beading shall be straight and uniform;
The type and laying thickness of sound-absorbing and heat-insulating materials filled in the ceiling shall meet the design requirements, and anti-falling measures shall be taken;
Lamps or fans with a weight greater than 3 kg and other heavy equipment are strictly prohibited from being installed on the keel. Additional hangers should be attached to the base structure.
V. The common problems and solutions of the wooden keel gypsum board ceiling. First, the ceiling uneven phenomenon: ceiling uneven, inclined or partial waves.
the reason:
The elevation of the ceiling was not identified, or the line was not clear, and the local elevation was wrong.
The ceiling spacing is too large and the keel deforms too much.
Wooden keel ceiling wood moisture content, shrinkage deformation.
When using wood screws, the distance between the screws and the edge of the gypsum board is inconsistent.
Measures:
The water column method is used to find the elevation line around the wall. The bullet line is clear and the position is accurate.
Light steel keel boom spacing should be 1200 ~ 1500 mm, not too large.
The wood used meets the requirements and is firmly fixed.
The distance between the screw and the edge of the board or the end of the board must not be less than 10 mm, nor more than 16 mm. The middle screw of the plate must not be more than 200 mm apart.
Second, the paper plaster ceiling cracks in the cracking of the board: paper gypsum board ceiling, after a period of time, cracks in the gypsum board joints.
the reason:
The structure of the slot joints is not reasonable.
Gypsum board quality is poor, expansion and contraction deformation.
Caulking putty quality is poor.
Improper construction measures.
Ceiling keel is not fixed.
Measures:
When installing the plasterboard, make sure that the plasterboard is fixed in an unstressed state.
Keel and screw spacing should be in accordance with the construction specification Gypsum board joints V-grooves Gradually embedded putty and then paste Kraft paper tape
Wood keel plasterboard ceiling construction technology and acceptance
First, the definition and classification of ceilings Definition of ceilings: