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Eight reasons why the prefab house will leak

by:Lida Group     2022-02-21

Analysis of the eight major reasons why the prefab house will leak

1. The unreasonable selection of waterproof materials and aging in the construction process of the prefab house.

2. The construction of key nodes is sloppy. The pipes extending out of the roof and the roots of the ventilation openings are not tightly blocked, and the flooding height of the waterproof layer is not enough. In case of rain in the construction of the thermal insulation layer, the exhaust slot is blocked, and the setting of the exhaust holes is unreasonable, resulting in the long-term flooding of the thermal insulation layer in the prefab house.

3. Unqualified materials were used in the construction process of the prefab house, and the construction was random, and the operation was not strictly in accordance with the requirements of the construction specifications.

4. Drill holes on the panel of the prefab house, and install various types of fans, exhaust pipes, etc. around the cracks, and the waterproof treatment is not good; the prefab house is in the process of use. Due to the influence of external conditions, wind load, snow load, thermal expansion and contraction, etc., cause the deformation of the roof panel, resulting in the expansion of cracks at the lap joint, and damage to the original waterproofing treatment, resulting in water leakage.

5. Due to the large span of the movable panel house panel and the overlapping of the roof panel, the installation is often difficult to meet the design theoretical standard, resulting in rain leakage.

6. During the process of installing the prefab house, the color steel plate that has been installed is not protected, and the roof is trampled at will, destroying the flatness of the prefab house.

7. There is no horizontal slope in the gutter of the prefab house, and the design of the gutter sluice is unreasonable. Eaves gutter backflow; during the construction of prefab house, the gutter anti-corrosion is not in place, resulting in gutter rust and erosion, or dregs and other clogging of the drain, etc., all of which may cause water leakage or water backflow. The gutter of the prefab house has no horizontal slope, and a certain slope should be reserved during installation, at least 0.5%. At the lap joint of the gutter, there are gaps in the welding, leakage welding, slag inclusion or no anti-corrosion.

8. The trampling of the roof during the installation and use of the prefab house will lead to the loosening of the fasteners. The aging of the waterproof gasket of the fasteners causes water leakage at the fasteners.

When the prefab house is leaking, it is best to let the professional manufacturer repair it to ensure the normal use of the prefab in the future.

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