Do you know something about the construction of TPO waterproof roll?
Time:
2021-06-30
Generally speaking, when choosing the paving method, the empty paving method, point method and strip method shall be given priority to TPO waterproof coiled material, because the roof is subject to foundation deformation, structural load, temperature difference deformation, and shortening deformation of leveling layer and waterproof layer.
Generally speaking, when choosing the paving method, the empty paving method, point method and strip method shall be given priority to TPO waterproof coiled material, because the roof is subject to foundation deformation, structural load, temperature difference deformation, and shortening deformation of leveling layer and waterproof layer. If the waterproof layer and the bottom layer are full of adhesive force, its adaptability to deformation is poor, and the waterproof layer is often damaged due to tensile cracking. The solution to this problem is to increase the elongation of coiled materials, reduce structural deformation, and change the paving process. The empty paving method, spot pasting method, pasting method and mechanical fixation method shall be used to separate the waterproof layer from the bottom layer as much as possible. The waterproof layer has enough length to participate in the strain, which plays a good role in dealing with the tensile cracks of the waterproof layer. Now let's talk about the structure of TPO waterproof roll:
1. Strong wind area: adopt full fitting mode to prevent the coil from being torn by wind. Although the empty place can be paved first, and then heavy objects can be paved, such as a small concrete slab or a layer of gravel to deal with wind broken coil, but this undoubtedly increases the cost.
2. Inclined roof; The viscous coil is firmly combined with the bottom layer to prevent the coil from sliding. Although the coil can be fixed by mechanical fixation, it will encounter the defect that the coil cannot be fixed and will be blown away.
3. The waterproof layer often requires other types of construction work, such as the color steel slope roof on the roof. On the inclined roof of color steel plate, waterproof coiled materials are usually laid before the installation of color steel plate (because the steel structure roof is very dark after the installation of color steel plate, although artificial lighting can be used, the space is small, which is not conducive to construction). Personnel shall tread on coiled materials frequently, which will inevitably damage the waterproof layer. The bonded coil can withstand the impact of such external force to a large extent without moving and tearing the joint.
As mentioned above, the advantages of TPO waterproof coiled material empty laying method and strip (point) method construction are that they can overcome the stress damage caused by structural deformation, reduce labor intensity, and save time and labor. strive; The disadvantage is that the waterproof layer is not suitable for inclined roofs, windy areas and external forces generated by construction operations. In fact, both the empty paving method and the strip (point) pasting method also adopt the full pasting method. The empty paving method is also used in the construction of full adhesion method.
TPO waterproof roll roofing waterproof layer requires good structural integrity and stiffness at the bottom. Due to the shortening of the leveling layer and the influence of temperature difference, the cement mortar leveling layer should be set with separation joints, so that the cracks of the leveling layer are concentrated at the separation joints, reducing the possibility of large areas. The leveling layer is cracked to prevent the coil from tearing at the joint. When laying coiled materials with the full adhesion method, the TPO waterproof coiled materials at the joints shall be empty, so that a dry roll tape can be added at the joints to cover them, and they will not stick to the bottom and top coiled materials, otherwise only some coiled materials will be added. The thickness of the material layer.
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Weifang Zhengyuan Waterproof Material Co., Ltd
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