Characteristics and construction method of modified asphalt waterproof coating

Modified asphalt waterproof coating is one of the commonly used waterproof coatings. At present, it is also used on walls and roofs, with good waterproof effect. At present, when many people use this kind of paint, they will adopt many characteristics and don't know how to construct it. Let's take a look at the characteristics and construction methods of modified asphalt waterproof coating.

First, the characteristics of modified asphalt waterproof coating

1, cold construction, tasteless, non-toxic and pollution-free;

2, thick coating can be applied, which saves labor and time;

3. The construction is safe and convenient, and it can be constructed at wet base, and has excellent adhesion to wood, concrete and asbestos board;

4. Excellent low-temperature ductility, which can well adapt to the deformation of the base and ensure the waterproof quality of the project;

5, corrosion resistance, high temperature resistance and aging resistance.

Second, the modified asphalt waterproof coating construction method

1, the construction sequence should be nodes, additional layers, and then large-scale painting;

2. Plate joint sealing: after the joint is cleaned, caulk it with sealing material;

3. Seam surface enhancement: after seam sealing (water-based products are transparent to Xu Qian), the short paving of additional layers should be short;

4. Fully spread: make a base first. Dilute the product with water and completely cover the roof. After drying, apply this product in layers and times. Matrix such as grid cloth should be spread in the coating, and it should be spread while coating; The carcass shall be smooth, bubble-free and dipped in paint; The outermost coating of the carcass shall be painted at least twice, and its thickness shall not be less than1mm; When a double-layer carcass is used, the upper and lower layers shall not be laid vertically to each other, and the overlapping parts shall be staggered, and the spacing shall not be less than the width1/3;

5. Make protective layer: After the last layer is dried, it can be sprayed with water-based reflective heat insulation coating. It can also be used to screen fine sand or colored sand from powder and remove spreading materials such as matrix or vermiculite; When mortar and block are used as protective layer, an isolation layer should be laid on the waterproof layer, and then the mortar surface should be smoothed and calendered, and the surface frame joints should be set, with an area of 1m2, with a gap of 30mm between it and the parapet, and this product should be embedded.

3. What kinds of asphalt waterproof coatings are there?

1, solvent-based petroleum asphalt waterproof coating. Solvent-based asphalt coatings are made by directly dissolving petroleum asphalt in organic solvents such as gasoline. Because the coating film is very thin after brushing, it is not suitable to be used as waterproof coating alone. It can be used as a basic treatment agent for linoleum construction.

2. Water emulsion petroleum asphalt waterproof coating. Its performance is to disperse petroleum asphalt in water and become a stable water dispersion, that is, water emulsion asphalt coating.

3. Waterborne asbestos asphalt waterproof coating, which consists of asbestos and water, and then molten petroleum asphalt is added. Compared with common emulsified asphalt, it has better weather resistance and can form a thick coating, which can be used as a waterproof coating alone. However, the amount of paint per unit area is also large, and asbestos fiber is harmful to human body.

The characteristics and construction method of modified asphalt waterproof coating are as above. When using modified asphalt waterproof coating, corresponding methods will be followed, which will bring different effects. How to use modified asphalt waterproof coating in detail and find professional construction personnel. And can ensure better construction and application effects.