Besides design and construction, improper use of steel structure roof may also cause water leakage. What are the causes of water leakage of steel structure roof?
1. In the use of the non accessible roof, the damage of the waterproof layer of the roof caused by human factors may lead to water leakage of the roof;
2. The sewer is not smooth and the gutter is full of leaves, causing backwater;
3. During construction, the roof steel plate is trampled, causing water accumulation;
4. The exposed self tapping screws on the roof will break when there is vibration due to quality reasons, so as to leave holes and water leakage on the roof panel;
5. Roof water leakage is also sometimes caused by water absorption of thermal insulation materials. Some projects use double-layer color steel plate + thermal insulation cotton, but the thermal insulation cotton is not added with aluminum foil. Without this vapor barrier, a long time has passed. A large amount of water vapor condenses on the roof, resulting in water drops in the room. At this time, not only the thermal insulation effect is affected, but also the roof dead load is increased after the thermal insulation cotton absorbs water, which is very dangerous in case of large snow load!
Measures to solve the water leakage problem of metal sheet roof:
1. In order to design the structure reasonably, we should consider many factors such as cost, roof slope, plate type, etc;
2. Fully consider the climate characteristics of the area where the building is located, and adopt waterproof measures and materials suitable for the area;
3. Due to the material characteristics of the metal roof panel and the advanced experience of foreign countries, the waterproof materials suitable for the metal roof panel are selected, such as the butyl rubber adhesive tape with high bonding strength, good traceability and excellent weather resistance, as the matching waterproof materials for the metal roof panel.
