What are the metal roof waterproof material

What are the metal roof waterproof materials? If you want to do a good job of metal roof waterproofing, then the choice of waterproof material is very important. For the waterproof treatment of metal roofs, waterproof products such as waterproofing membranes, resins, weatherable silicone adhesives, polyurethane coatings, and JS cement-based waterproof coatings are commonly used. The appropriate products must be selected according to the actual construction conditions.

Now many factory buildings use metal roofs. In order to ensure normal production, we need to do a good job of waterproofing metal roofs. Today we will first introduce you to the metal roofing waterproof materials. Let's take a look.

What are the metal roof waterproof material


For the waterproof treatment of metal roofs, we have long used water-repellent products such as waterproofing membranes, resins, weatherable silicones, polyurethane coatings, and JS cement-based waterproof coatings. Want to do a good job of metal roof waterproofing, then the choice of materials is very critical, so the best understanding of the material is to be more comprehensive.

Waterproof coating: water-based, reactive, solvent-based; or one-component, two-component polyurethane, js polymer, etc.

Waterproof membrane: sbs, app, self-adhesive polymer, self-adhesive rubber, EPDM, etc.

Rigid waterproof material: waterproof concrete, waterproof concrete admixture.

Construction seal materials: sealant, sealant, inorganic waterproof plugging material.

Pressed metal sheet roof waterproofing: Metal sheet waterproof material.

Metal roof waterproof construction


1. Roof panel lap joints: Roof panel laps are divided into horizontal laps and vertical laps. Vertical laps are the lap joints in the same direction as the roof slopes. Vertical laps in the direction of the roof slope are called horizontal laps. A layer of metal roofing special polymer waterproof coating is first applied on the horizontal overlap of the metal roof slab. When it is still wet, insert 20-inch wide reinforcing ribs into it, and then fully paint it on the surface without dew, or even dry. The vertical lap of the roof panel is coated with metal roofing special polymer waterproof 1 times, when it is still wet, insert 15 宽 wide reinforcing ribs into it, and then fully infiltrate the reinforcing ribs with the paint from above, and then completely dry; Brush the surface twice.

2. Metal roof protrusions (such as cable anchors, air outlets, fan outlets, etc.): Cut ribs of appropriate size and shape, and cut them as required. Coat a layer of metal roofing special polymer waterproof coating around the protrusions. The well-trimmed ribs are laid on it, and then the metal roofing special polymer waterproof paint is used to fully infiltrate the ribs to ensure that they are not blistering, wrinkle-free, or bare-white, and are completely coated with 2-3 times of metal roofing. Polymer waterproof coating can be fully dried.

3, metal roofing firmware: with 10? X 10? ribs, waterproof measures in the same way as above, if there is rust, should be rust-prevented before the implementation of waterproof construction.

4. Waterproof treatment of the lap joint between the lighting board and the roof board: As the lighting board and the roof color steel board are of the same material, the thermal expansion and contraction coefficient is not the same, and it is easy to cause deformation joints to cause leakage. At the same time, the selected waterproof material requires good compatibility with both. The “5 coats and one cloth” waterproofing system treatment method is: All the overlapping parts should be treated with waterproofing. 20-inch wide WBS stiffeners are used. The method of “five coating and one cloth” is adopted to treat the lighting board and the roof panel. Form a whole seamless structure.

5. Both sides of the ridge tile and the gutter treatment: There are also hidden dangers of water leakage on both sides of the ridge tile cover and welding parts of the gutter.

1) Reinforce the rivets on both sides of the ridge cover plate according to the specific conditions;

2) Select a 50-inch wide rib and cut it into the corresponding shape according to the actual shape of the ridge, and then follow the same method as above ("Five coated cloth");

3) Waterproof treatment of gutter welding seam: Use 20-inch wide ribs for waterproofing according to the method of “five coats and one cloth”. It is recommended to use gutters and rust-proof paints as gutters after the gutter welds are well treated. Protection process.

6. The coating rate of the special polymer waterproof coating for metal roofing is 60 square meters per 20 liters, and the utilization rate of reinforcing ribs is 99%. The actual coating rate varies slightly depending on the construction method and the condition of the metal roof.

7, specific waterproof parts are:

1) All the nodes of the roof need to be waterproofed;

2) The requirement for waterproofing is to ensure that no leakage occurs during the 10-year warranty period after the waterproof treatment is strictly in accordance with the waterproof construction requirements.

Metal roof waterproof coating brand


DeGao, Leibang Shi: Many of these two brands are aware of, especially those who paint a number of industries will choose these two brands of waterproof coatings for home decoration, these two brands are the earliest in the valley One of the companies doing waterproof coatings, the former is mainly engaged in waterproof coatings and dry mortar, which is involved in various industries, while the latter is committed to home waterproofing, mainly based on waterproof coatings required for home decoration.

The coatings of Oriental Yuhong, Ilead and Zhuobao are mainly dedicated to waterproofing projects, but later they are also involved in family waterproofing. Oriental Yuhong is currently the first-line waterproof brand for households and deserves our attention; and Zhuo Bao Under the brand of home waterproof coating has a special brand called "painting worry" We must pay attention to this brand when buying, it is not some of the brands without quality assurance, in fact, under the Zhuobao brand.

The three brands, Tuushi, Sika, and Henkel, are all first-line brands. Although Tuoshi is the first-line brand of waterproofing, it is still at a high level in terms of household waterproofing, and it is also focused on health and environmental protection while waterproofing. Home waterproof can choose this brand; while Sika and Henkel are all international famous brands, and the areas involved are also relatively extensive, but their prices are indeed relatively high, compared with some domestic brands, individuals think that it is better to choose domestically.