On the China Aluminum Network, a user shared their experience about an aluminum alloy ceiling in their kitchen that wasn't flat after renovation. They wondered why this happened and wanted to understand the possible causes. There are several reasons behind the unevenness of aluminum alloy panels. One common issue is poor control of the horizontal line during installation. This can happen if the lines aren’t properly marked or if the keel isn’t leveled correctly. A weak or inaccurate control system can also contribute to this problem.
Another cause is improper installation methods. If the slats are not installed correctly, especially when the keel isn’t level, it can lead to uneven loading and even wavy patterns. In some cases, lightweight suspended ceilings may sag due to insufficient support, which is more common in systems using a keel and fixing brackets. Additionally, if the supporting structure isn’t secure, local subsidence might occur, causing the ceiling to become uneven.
Sometimes, the slats themselves might be deformed, and if they’re installed without correction, this can result in an unlevel surface. This issue is often seen in long strip-type ceilings. To avoid such problems, proper installation techniques and attention to detail are essential.
To ensure a smooth and flat aluminum alloy ceiling, here are some key points to consider:
1. Accurately project the elevation line around the ceiling onto the walls. The error should not exceed ±5mm. If the area is large, add additional control points in the middle. Make sure the lines are straight and do not sag.
2. Always level and adjust the keel before installing the slats. This step is crucial for maintaining flatness. If the keel isn’t properly adjusted, it’s hard to achieve a good finish. Thin panels with low rigidity are especially prone to deformation under uneven pressure.
3. When installing equipment like lights or fans, make sure they are supported by a separate boom that is fixed directly to the structural roof. Don’t rely on the ceiling itself for heavy loads.
4. If using expansion bolts to fix the supporting structures, keep detailed records, including the depth and spacing of the bolts. In critical areas, perform pull-out tests to ensure the bolts are secure and reliable.
By following these guidelines, you can significantly reduce the risk of an uneven aluminum alloy ceiling and ensure a professional, durable finish.
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