Color steel roof waterproof construction technology, color steel roof waterproof membrane constructi

The base surface is treated first, and then the base treatment agent is painted, the base coating, the polyester cloth is laid, the secondary base coating, the surface coating is painted after the surface is dry, the secondary surface coating, and the construction process of one cloth and five coatings can eliminate the leakage problem of the color steel roof.

The leakage of the color steel roof is mainly concentrated in the lap of the profiled plate, the roof lighting belt, the eaves steel plate and the cement wall connection.

Analysis of the causes of water leakage on the roof of color steel plate.

1.Water leakage due to the properties of the material itself.

When the external temperature changes greatly, due to the large change in ambient temperature, the color steel plate shrinks and deforms due to the temperature change and produces a large displacement at the interface, so it is easy to produce water leakage hazards at the interface part of the color steel plate. In the steel structure system, due to the temperature change of the structure itself or the action of external forces such as wind load and snow load, it is prone to elastic deformation, and the displacement of the connection part causes the hidden danger of water leakage. In special parts, due to the use of different materials to connect, such as the junction of the parapet wall and the groove enclosed by the steel plate, the roof lighting belt and other parts, due to the asynchronous stress change, there is a hidden danger of water leakage.

2.Water leakage hazards caused by defects in the structural design or plate type of the house.

In the fierce market competition, the construction party to undertake the task, and blindly reduce the cost, in order to save raw materials, in the structural design, reduce the slope of the house, even less than 1 20, it is easy to produce water, resulting in water leakage. Due to the cost factor, the compression wrench used in the light steel house at present, most of them are plate type with low wave height (large effective area), and the lap width is small, when the house is waterlogged, it is easy to overflow the plate type lap joint, resulting in water leakage.

The construction steps of color steel plate roof leakage are as follows:

Identify the area that needs to be waterproofed

Metal roofs generally have the following areas that need to be waterproofed: horizontal lap joint, vertical lap joint, fan mouth, protruding roof pipes, air conditioning pipes, lighting panels, roof ridges, gutters, metal plate and parapet junctions, screw fasteners and other metal roof waterproof weak links.

Pretreatment of color steel plate roof leakage water base:

Carefully inspect the metal roof before construction to ensure that the metal roof is firm, clean, no rust and no frozen objects

a. Replace the rusted firmware and add the firmware in the appropriate position.

b. Use rust removal sandpaper to polish the rusty area clean until it shows the natural color of metal, and then apply a layer of base coating.

c. Remove frozen objects, dust and other dirt.

Color steel plate roof leakage water construction technology:

a. The metal roof lap joint is first coated with a layer of base coating, and when it is still wet, embed the 15 20 cm wide sewing polyester cloth into it, and then fully infiltrate the sewing polyester cloth with the base coating from above, until it is completely dry.

b. Protrusions of metal roofs (such as chimneys, vents, fan outlets, etc.): cut the appropriate size and shape of the sewn polyester cloth, and cut it according to the technical requirements, apply a layer of base coating around the protrusion, spread the cut sewn polyester cloth on it, and then fully infiltrate the sewing polyester cloth with the base coating from above to ensure that it does not blister and wrinkle.

c. Metal roofing firmware: 10 10 sewing polyester cloth according to the same method as above.

d. Metal roof gutter: gutter lap joints, downspouts, etc., first use the metal roof waterproof system for local waterproofing, and then apply a layer of paint in a larger waterproof range

The waterproof construction of color steel plate first needs to determine the waterproof area: generally the following areas need to be waterproofed: horizontal lap, vertical lap, fan mouth, outstretching roof pipes, air conditioning pipes, lighting board around, roof ridges, gutters, metal plate and parapet junction, screw fasteners and other metal roof waterproof weak links.

Carefully inspect the metal roof before construction to ensure that the metal roof is firm, clean, no rust and no frozen objects

1.Use rust remover sandpaper to sand the rusty area clean until it has a metallic color, then apply a layer of base paint.

2.Remove freezing, dust and other dirt.

3.Replace the rusted firmware and add firmware where appropriate.

Waterproof construction technology:

1. Protrusions of metal roofs (such as chimneys, air outlets, fan outlets, etc.): cut the sewn polyester cloth with appropriate size and shape, and cut it according to the technical requirements, apply a layer of base coating around the protrusion, spread the cut sewn polyester cloth on it, and then fully infiltrate the sewing polyester cloth with the base coating from above to ensure that it does not blister and wrinkle.

2. Apply one or two layers of surface paint in the waterproof treatment area, and the total coating rate of the surface coating is 35 square meters and 20 liters (it is recommended to apply it in two times to keep the total coating rate unchanged).

3. The coating rate of a single layer of base coating is 40 square meters and 20 liters, and the utilization rate of sewn polyester cloth is 90%.

4. Metal roof gutter: gutter lap joints, downspouts and other places are first treated with a metal roofing waterproof system, and then a layer of paint is applied to a larger waterproof stove, and a sewing polyester cloth is laid when it is still wet, and then the sewing polyester cloth is fully soaked with slurry from above, so that it is completely dry.

5. Metal roofing firmware: use 10 10 sewing polyester cloth and treat it in the same way as above.

6. Metal roof lap joint: The metal roof lap is first coated with a layer of base coating, and when it is still wet, the 15 20 centimeters of sewn polyester cloth is embedded in it, and then the sewing polyester cloth is fully soaked with the base layer paint of the hall from above, so that it is completely dry.