The primer can be applied by roller coating or spraying.
The film of emulsion paint shall not be too thick or too thin during construction.
Sanding paper: each layer of putty shall be sanded once, and each layer of sandpaper shall polish and smooth the wall without leaving floating putty and scratches, and clean the floating dust.
2 Operation process (1).
If necessary, the number of painting times can be appropriately increased.
Process flow: base course treatment → putty and hole filling → grinding → full putty application → polishing → full putty application for the second time → polishing → first dust-proof paint application → polishing → second dust-proof paint application → cleaning.
If the weather is wet and it is not dry after 4 hours, the time shall be extended, and it shall be grinded after it is dry.
（2） Process flow of ceiling works (1): setting out → installation of main keel suspender → installation of main keel → installation of fixed connectors → installation of framework → installation of metal decorative panels.
If the primer penetrates into the base course more, it shall be repainted.
(2) Key points for operation: 1) Before construction, dust on the original wall shall be swept away, and a horizontal line shall be snapped on the wall.
The snapping line shall be clear, the position shall be accurate, and the allowable horizontal deviation shall be ± 5mm.
4) Correction and inspection of ceiling framework: a.
According to the construction drawings, snap the position line of the main keel on the structural ceiling and mark the position of the hanging point in detail.
The number of painting times is generally two.
Back sealing paint: if high-grade emulsion paint is used, the back sealing paint process shall be added after the second full putty.
C Rock wool boards shall be laid from top to bottom and connected with each other.
After the installation of keel, comprehensively correct the position and overall levelness of various keels.
2) The laying direction and sequence of color steel plates shall be determined according to the design drawings, and the keels shall be positioned and the lines shall be snapped on the wall.
(6) Polishing: 4 hours after the first coat of emulsion paint is applied, it shall be polished with fine sandpaper.
B The laying method of rock wool board shall be designed before use.
b.
(3) .
After drying, polish with sandpaper.
4) After the construction of the rock wool filled keel is completed, the fireproof rock wool insulation layer is paved in the keel interlayer.
(2) Full puttying: wall puttying is made of white latex paint, talcum powder or white powder, and 2% carboxymethyl cellulose solution in a proportion of 1:5:3.5 (weight ratio).
Check the ceiling framework to ensure it is firm and reliable.
c.
b.
Base course treatment: The base course of different materials shall be treated by different methods, and the surface shall be flat, dry, free of oil stain and floating dust after treatment.
5) Installation of suspended ceiling boards: after the construction of other professional projects is completed and the concealed works are accepted, the installation of suspended ceiling boards shall be carried out.
When applying, the coating shall be uniform without omission.
c.
The gap between plates shall be bonded with special tape.
Install the color steel plate according to the relevant technical manual, and the connection between the color steel plate and the keel must be firm and reliable.
In accordance with Article 8.1 and 8.2 of Code for Acceptance of Construction Quality of Building Decoration (GB50210-2001)..
b.
Quality standards.
3) Keel installation: a The connection between keel fastener and wall must be firm, and the arrangement and spacing of fasteners should meet the requirements of relevant technical manuals.
Fix the keel, and the connection between the keel and the fastener must be firm and reliable.
The specification of suspender shall meet the design requirements, and rust prevention treatment shall be carried out before installation.
(2) Key points for operation: 1) Setting out: a According to the design elevation, the ceiling elevation line shall be snapped along the wall and the column surface.
When fully scraped, there shall be no missing scraping, no tenon left at the joint, and no contamination of the door, window frame and other parts.
The spacing of main keel shall meet the design requirements and shall be less than 1200mm.
b.
After the installation of the main keel, its position, elevation and camber height shall be corrected in time.
(4) .
The moisture content of concrete or plastered base course shall not exceed 10%.
In general, it is better to cover the bottom fully, avoid virtual shadows, and have a uniform surface.
The rock wool insulation wall is composed of three parts: the wall structure layer, the insulation layer, and the finishing layer.
b.
Calculate the size for cutting and blanking.
The concealed keel ceiling works shall comply with the provisions of Article 6.1 and 6.2 of Code for Acceptance of Construction Quality of Building Decoration (GB50210-2001).
（3） Color steel panel wall (1) Process flow: setting out → keel positioning → keel installation → rock wool filling → gypsum board installation → color steel plate installation.
Installation of rock wool board.
Rock wool boards shall be laid in order.
(7) Cleaning: the splashed dust-proof paint can be cleaned, and the emulsion paint on the roof and special wall can be painted with a spray gun in addition to brushing and rolling.
2) Installation of main keel suspender: a.
3) Installation of main keel: a.
(3) Quality standards.
01 Text I: Machine room decoration (I), roof and floor dust-proof paint project 1.
Use a 2m ruler to check the perpendicularity of keel, and the deviation of perpendicularity shall not be greater than 2mm of the ruler; Use a 2m guiding rule and feeler gauge to check the flatness of the keel framework, and the deviation of the flatness shall not be greater than 3mm.
When meeting door and window openings, they shall meet relevant requirements.
Use expansion bolts to fix the suspender to the structural ceiling, and the fixation shall be firm; The spacing of suspenders shall meet the design requirements and shall not be greater than 1200mm.
The straight-line error of the cutting edge shall be less than 5mm, and the butt joint shall be no more than 2mm.
5) Color steel plate installation: a The installation condition is that the construction of other professional projects between the wall keel and the base is completed and the concealed works are accepted.
(5) Apply emulsion paint.
The first layer of putty shall be applied horizontally, and the second layer of putty shall be applied vertically.
b.
Under normal temperature conditions, the time interval of each coating is about 4h.
A.
The scraping shall be flat, even, smooth and in a tight room; The line corners and edges are neat.
