How to do waterproofing of steel structure metal roof?

The protruding part of the steel structure roof has always been a waterproof headache, such as the leakage of the steel structure roof is mainly concentrated in the vertical lap, horizontal lap, lap on both sides of the ridge, around the lighting tile, around the fan, around the chimney pipe, all the screws on the roof, the sink, the joint of the parapet wall and other joint parts. At present, the waterproof materials on the market, such as silica gel and APP, can not solve the problem of roof leakage, and the use of steel structure roof waterproof system can solve the above problems well. After more than 20 years of practice, it has been proved that this is the best material for the waterproofing treatment of steel structure roofs at home and abroad.

The components of the Guoerjia steel structure roof waterproofing system are: 1. Base waterproof coating.

2. Reinforced polyester cloth.

3. Surface waterproof coating.

The steel structure roof waterproofing system is a high-quality waterproof coating made of high-quality 100% pure acrylic emulsion from the United States, with high-quality auxiliary materials added, supplemented by reinforced polyester cloth to form a seamless waterproof system. It has super tensile strength, ultraviolet resistance, anti-aging, fatigue resistance, low temperature flexibility, water-based, non-toxic, tasteless, non-combustible, non-corrosive, and stable quality, which is the best steel structure roof waterproofing system today.

It can be applied by brush, roller and scrape. The construction pretreatment is to polish and remove the rust of the corroded part of the base surface to make it present the natural color of the metal, and use the Guoerjia brand supporting anti-corrosion coating for anti-corrosion treatment. Thoroughly clean the working base surface, replace or strengthen the loose firmware to ensure that the base surface is smooth, and the firmware is not loose, rust, oil-free, dust-free, and water-free.

Construction process batching method: Before use, the paint needs to be stirred evenly until there are no particles. Construction method: On the cleaned base surface, directly paint or spray the prepared slurry, and be sure to paint evenly. After drying, the primer can be applied.

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Roof waterproofing has always been a key issue in the construction of the class, if you want to effectively fill the leakage, then you must choose the right product, the steel structure workshop is a systematic project, so it must be considered, to introduce to you how to do the steel structure roof waterproofing.

1. Longitudinal lap joint: (existing on the roof due to the lap joint caused by the insufficient unit length of the plate) Treatment method: The 25cm wide ofan waterproof system is used to cover the board joint, and the original waterproof layer of the old roof needs to be removed.

2. Roof screws and fasteners: treatment method: cover with a waterproof layer of 10cm and 10cm wide.

3. Special attention should be paid to the root of the fan base, exhaust outlet, ventilation window and other equipment on the roof: first of all, it is necessary to ensure that the parts that need waterproof treatment are drained smoothly, and if it is easy to retain stagnant water, the roof panel should be transformed and then waterproofed. Usually, many construction units will add some water baffles (flashing) when dealing with these parts, but we have found that many of them are unreasonable and counterproductive, and even rainwater will remain in them for a long time after the rain stops, thereby corroding the facilities and roof panels.

Some of these roofing facilities that usually leak water are due to poor drainage when the water surface of the root is heavy between the two wave peaks, and there are some micropores, joints, cracks and other reasons in some complicated waterproof materials. We recommend cutting the crest of the roof panel bulge within 20cm of the root of the frontal installation.

4. The root ofan waterproofing system that passes through the roof nozzle has an absolute advantage in dealing with various sizes and complex nozzles on the roof. The large nozzle usually treated with a rubber cover sheet undoubtedly naturally forms three seams (that is to say, three waterproof hidden dangers) in the upper mouth, lower mouth and side sealing of the rubber layer. The Ofan waterproofing system we use is applied in a liquid state, and after it dries, it forms a seamless and flexible waterproofing layer that is tightly integrated with the pipes and roof panels.

5. The reason for the water leakage on both sides of the ridge cover plate is that the roll height of the roof panel is not enough, the cover plate is not in place, and the cover plate is not fixed well.

6. The height collapse, the root of the parapet wall, these parts are unreasonable installation of flashing board or there are transverse horizontal joints in this area.

7. The joint between the roof lighting window and the metal roof panel.

Summary: about the steel structure roof waterproofing how to do the relevant content is introduced here, in the roof waterproofing must be in accordance with the steps to operate, at the same time some details are also to pay special attention, I hope the above introduction to help you.

Steel structure roof waterproofing refers to the waterproofing treatment on the steel structure roof to prevent rainwater from infiltrating into the building and causing damage. Common waterproofing methods for steel structure roofs include:

1.Waterproof coating: Apply waterproof coating on the surface of the steel structure roof to form a waterproof membrane to prevent rainwater from penetrating.

2.Waterproofing membrane: The waterproofing membrane is laid on the steel structure roof to form a layer of anti-envy orange water layer to prevent rainwater from penetrating.

3.Waterproof coating film: Apply a waterproof coating film on the steel structure roof to form a waterproof layer to prevent rainwater from penetrating.

4.Waterproof sheet: The waterproof plate is laid on the steel structure roof to form a waterproof layer to prevent rainwater from penetrating.

5.Hot-melt waterproofing: The hot-melt waterproofing material is applied to the steel structure roof, and it is melted by heating to form a waterproof layer to prevent rainwater from penetrating.

The above is a common waterproofing method for the difficult surface of the steel structure roof, and the choice of which method needs to be considered comprehensively according to the actual situation.