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Special attention should be paid to the following points during the installation process of color coated boards

(1) The top of the support strip must be on the same plane, and its position can be adjusted by tapping or relaxing according to the actual situation. It is not allowed to directly strike the bottom of the fixed bracket to attempt to adjust the slope or position of the roof. The correct placement of the painted board can ensure its effective closure. On the contrary, if the painted board is not properly aligned when placed, It will affect the buckle effect of the color coated board, especially the part near the support center point.
(2) In order to avoid the formation of fan-shaped or scattered color coated panels or uneven lower edges of the roof due to improper construction, the color coated panels should be checked for proper alignment at all times when placed, and the distance from the edges of the upper and lower ends of the color coated panels to the gutter should be measured at all times to avoid tilting the color coated panels.
(3) Immediately after installation, clean up any remaining metal debris on the roof, such as water debris, rivet rods, and discarded fasteners, as these metal debris can cause corrosion of the painted panels. Construction of accessories such as corner wrapping and flashing
2. Laying of insulation cotton:
Before laying, the thickness of the insulation cotton should be checked for uniformity, and the quality assurance certificate and certificate of conformity should be checked for compliance with the design requirements. When laying insulation cotton, it is required to be tightly laid, and there should be no gaps between the insulation cotton and fixed in a timely manner.
3. Laying of top plate
When laying the inner and outer panels of the roof, the overlap of each edge shall be strictly in accordance with the requirements of the specifications. When installing the eaves, the installation position shall be determined by combining the bottom plate and glass wool. The eaves shall be laid from bottom to top in sequence, and segmented inspection shall be conducted to check the straightness of both ends and the flatness of the board to ensure installation
Quality.
4. SAR-PVC waterproof roll sheets can be used for soft waterproofing in local areas such as ridges and gutters, which can effectively solve the problems of joints, water accumulation, and leakage that cannot be solved due to the waterproof structure of color boards. The fixing points of PVC rolls ensure that they are fixed on the peak surface of the profiled board, ensuring that the fixing components are subjected to reasonable force and the waterproof structure is reasonable.
5. Installation control of profiled steel plate:
The installation of the pressed metal plate should be flat and straight, and the surface of the plate should be free of construction residue and dirt. The eaves and the lower end of the wall should be in a straight line, and there should be no untreated drilled holes.
② Inspection quantity: Spot check 10% of the area, and it should not be less than 10 square meters.
③ Inspection method: observation and inspection
④ Deviation in installation of pressed metal plates:
⑤ The allowable deviation for the installation of pressed metal plates should comply with the provisions in the table below.
6. Inspection quantity: The parallelism between the eaves and the ridge: 10% of the length should be randomly checked, and should not be less than 10m. For other projects, one spot check should be conducted every 20m in length, and no less than two should be done.
⑦ Inspection method: Use a stay wire, suspension wire, and steel ruler for inspection,
Allowable deviation for installation of pressed metal plates (mm)
Project allowable deviation