What are the waterproof materials for steel roof?

What are the waterproof materials for steel roofs? Waterproof materials commonly used in steel roof, such as butyl tape, silicone sealants, PVC waterproofing membrane, pure acrylic waterproofing coating, etc. They are all used in construction sites, but the waterproof materials of these steel roof have their own characteristics.

What are the waterproof materials for steel roofs?

1, a few projects use butyl rubber sealing strip as waterproof material of steel structure roof, which has general effect, easy to lose adhesion at low temperature, poor construction performance in special parts and easy to cause water leakage.

2. Some projects use polyurethane waterproof coating or sealant tape (commonly known as mastic) or styrene-butadiene rubber sealant tape for node waterproofing. These steel roofing waterproof materials have short service life and are easy to age. The service life is about 1 year, and it is easy to age and leak.

3. At present, silicone rubber is used in most domestic projects. After curing, the waterproof material of steel roof has low bonding strength, poor follow-up, easy aging, many man-made hidden dangers during construction, unreliable waterproof quality and easy water leakage.

4. Other waterproof materials for steel roofing include SBS coiled material, JS waterproof coating, PVC roofing waterproof and thermal insulation system, etc.

These materials can't be used for waterproofing of metal roofs for a long time, so they are easy to age and have high repair rate. Practice of steel structure roof insulation layer

In the construction, we should adjust measures to local conditions, learn from each other's strong points, and make this two-cloth-three-oil coiled material waterproof layer between the leveling layer and the rigid layer, which not only plays the role of isolation layer, but also avoids the sun and rain.

It can not only prevent the ointment from aging, but also play a waterproof role. In the construction of steel protective metal roof waterproof system, professional metal roof waterproof coating and woven polyester cloth are used to form an efficient waterproof layer, covering all joints of the roof, making the roof a whole without any joints. In this way, the roof steel plate will not leak water, and the joints will not leak water, thus achieving overall waterproofing. The waterproof coating with closed bottom has excellent elasticity, which can prevent the material from expanding when heated and contracting when cooled, and the damage caused by workers' trampling. The surface isolation coating has certain rigidity, good wear resistance, good stain resistance and weather resistance, and has a good protective effect on the bottom coating. A reasonable combination of several materials can achieve a longer service life.

Common problems and countermeasures of waterproof construction of steel structure roof

1. Install roof panel. When the roof panel is installed, sometimes the roof panel connected by penetrating self-tapping screws will not leak when installed in place. At present, in order to save cost and time, some companies often omit small square tablets. If you add a small square piece to the vertex of the roof panel first, then drive in the self-tapping screw, and if necessary, drive in the silicon hole glass glue for insurance.

2. Sometimes the concealed gusset plate leaks seriously, and it is often difficult to check after installation.

Among them, there are water leakage phenomena in many places, such as roof ridge and cornice, longitudinal overlap of roof panel, overlap of various roof flashing angles, overlap of roof panel and lighting tile, ventilator (ventilator), gas building, gutter and so on. 3. At the ridge of the roof, some construction units often miss the plug, or fail to glue the plug properly during construction, and fail to cut the roof cover plate to plug it in to keep out the wind and rain.

So it won't work in coastal areas! In addition, the groove of the concealed gusset plate on the roof can be tilted upward with the self-made clip at the roof ridge, and the groove of the concealed gusset plate at the inner gutter can be tilted downward, which can also play the role of waterproof backflow. Through the introduction of the above contents, do you know what waterproof materials are available for steel roofs? I hope that through the study of these contents, you will know more about the decoration.