The key to preventing the expansion of SPC floors is to control humidity and ensure the correct installation method. Here are some effective measures to prevent floor swelling:

1. ** Control ambient humidity ** :

- Before laying the floor, ensure that the humidity of the construction environment is moderate. Too high humidity will cause the floor to absorb moisture and expand, while too low humidity may cause the floor to shrink.

- For areas with high humidity, such as kitchens and bathrooms, special attention should be paid to waterproof measures to avoid prolonged contact with moisture on the floor.

- In humid weather, dehumidifiers or air conditioners can be used to reduce indoor humidity and keep the floor dry.

2. ** Floor selection and purchase ** :

- Choose SPC flooring with reliable quality and good moisture resistance. Check the product manual to understand its suitable humidity range and the requirements of the special use environment.

- When purchasing, ensure that the floor material meets the quality standards and avoid buying inferior products.

3. ** Install the floor correctly ** :

- When laying the floor, ensure that the floor is dry, smooth and free of oil. For uneven ground, the necessary leveling treatment should be carried out.

- Strictly follow the floor laying instructions and ensure that the expansion joints between the floors are wide enough to accommodate the floor expansion caused by changes in humidity.

- Use suitable glue or connectors to secure the floor and ensure that the connection between the floors is strong and reliable.

4. ** Daily use and maintenance ** :

- Avoid placing heavy objects on the floor or stepping on the same position for a long time to reduce local pressure on the floor.

- Clean the floor regularly, use a clean mop and neutral cleaner, and avoid using excessive moisture.

- If the floor is found to be slightly bulging, it should be dealt with in time to avoid the expansion of the problem.

By taking the above precautions, the risk of SPC floor swelling can be greatly reduced. However, if the floor has developed a serious expansion problem, it may be necessary to call a professional to repair or replace the floor. When dealing with the floor expansion problem, be sure to operate carefully to avoid further damage to the floor or affect the use effect.