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Beijing Municipal Building Decoration Association Indoor Environmental Protection Committee Zhang Qi: In summer, the room temperature is relatively high. Once the floor of the pavement enters the fall and winter seasons, physical factors affected by thermal expansion and contraction will easily cause deformation and even obvious cracks. In winter, paving the floor, in the summer there will be the phenomenon of swelling from the drum. Therefore, under normal circumstances, it is best to choose the pavement in the spring and autumn seasons.
If you must choose to work in summer, you must avoid sunlight on the floor to ensure that the room temperature is lower than 30°C; in winter, the room temperature should not be lower than 16°C; the northern cities should be in winter, and the indoor relative humidity must be increased and the floorboards must be properly installed. Cities need to adopt methods such as ventilation and dehumidification.
The concrete method of paving is: Adjust the floor direction, from the door to the room, the maximum span of the floor is 6 meters by 8 meters. If you exceed this limit, you must leave a contraction joint and use the buckle; the wall root, the door bead interface Reserve expansion joints to be greater than 8 mm; splicing requirements of continuous, uniform, residual glue to be cleaned in time; baseboard must reach 12 mm thick, otherwise it is difficult to cover up the contraction joint; aluminum alloy layer thickness should be guaranteed in more than 2 mm, Too thin and easy to warp and deform. In addition, after the check-in, the floor is best maintained once a month, not only to extend the floor life, but also to prevent the moisture in the air from infiltrating the substrate, resulting in deformation of the floor.
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Q: The floor of my house was paved last summer. After a winter, I noticed that there was a lot of cracks between floors. I wonder what caused this?