The Advantages And Disadvantages Of Various Methods For Laying Waterproof Membranes

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Roof waterproofing engineering nodes are generally numerous and complex. Different designs, forms, and materials are not the same. Analysis of the advantages and disadvantages of various methods for standard construction of waterproof coiled material.

Analysis of the advantages and disadvantages of various methods for laying waterproof membranes

There are various methods for laying waterproof membranes. Commonly used are a full-stick method, air-laid method, point-stick method, and strip-stick method. In general, the emptying method, the point bonding method, and the strip bonding method are preferred when selecting the laying method. Because the roof is affected by factors such as foundation deformation, structural load, temperature difference deformation, screed layer, and waterproof layer shrinkage deformation, if the waterproof layer and the base layer are fully viscous, the ability to adapt to deformation is poor, and the waterproof layer is often broken and broken. The solution to this problem is nothing more than improving the elongation of the coil, reducing structural deformation and changing the paving process, and changing the paving construction process is the easiest. The air-laid method, the point-adhesive method, the strip-bonding method, and the mechanical fixing method make the waterproof layer and the base layer as far as possible, and the waterproof layer has sufficient length to participate in the strain, which has a good effect on solving the cracking of the waterproof layer.

However, each of these paving methods has its own advantages and disadvantages and is suitable for different forms of roofing and laying of waterproof layers under certain restrictive conditions.

Full viscosity method:

The biggest advantage of sticking a waterproof membrane is that the coil is firmly bonded to the substrate. Mainly suitable for the following situations:

1. Areas with the strong wind: The full-stick method prevents the coil from being caught by the wind and tearing. Although it can also be laid empty, then the weight is covered on the coil, such as laying a small concrete slab or laying a gravel layer to solve the wind tearing of the coil. But there is no doubt that the cost is increased (such as the material itself and the roof load is increased, the roof panel is thickened, etc.).

2. Sloping roof; the fully viscous coil is firmly bonded to the base layer, avoiding the downward sliding of the coil. Although the mechanical fixing method can also be used to fix the coil, it cannot be fully fixed, so that the above-mentioned defects of the coil being blown by the wind are also encountered.

3. It is necessary to frequently carry out other types of construction work on the waterproof layer: for example, a color steel sloping roof is designed on the roof. Usually, the waterproof membrane is laid before the color steel plate is installed on the color steel roof. (Because the color steel plate is installed, the steel structure roof is very dark, although it can be artificially illuminated, space is small, which is not conducive to construction). When installing the color steel plate, the construction workers should frequently step on the coil material, which inevitably causes damage to the waterproof layer, and the full-adhesive coil material can withstand the impact of such external force to a certain extent, without displacement, seam tearing.