The weather is hot, and the gap left by the composite floor during installation is not big enough. Now it is arched. What can be done to restore it to its original state?

The main reason is wet expansion. Solution: 1, close doors and windows in wet weather; 2, indoor humidity control in 40%-70%; 3. When the humidity is 40%-70%, use air conditioner to remove the humidity, and at the same time, ventilate more. In addition, the seam between the wall and the door stone should be left with a contraction joint of10 mm. If it exceeds 8 m, it should be cut off, and no heavy furniture should be placed on both sides. At the same time, find more people from the business (who sold you the floor) to deal with it.