PVC floors can potentially harm health due to the release of volatile organic compounds (VOCs) such as phthalates and formaldehyde. These chemicals can off-gas over time, leading to indoor air pollution and potential health risks such as respiratory issues, headaches, and irritation of the eyes, nose, and throat. It is important to choose PVC flooring that meets strict environmental and health standards to minimize these risks. **

PVC plastic can be harmful to health because it contains toxic chemicals such as phthalates and vinyl chloride. These chemicals can leach out of the plastic and into the environment, posing a risk to human health. Phthalates have been linked to hormone disruption and other health issues, while vinyl chloride is a known carcinogen. Therefore, it is important to limit exposure to PVC plastic and seek out alternative, safer materials whenever possible. **

Yes, PVC can be laid over old PVC as long as the existing PVC surface is clean, smooth, and in good condition. It is important to ensure that the old PVC is securely attached to the subfloor and free of any damage or imperfections that could affect the new installation. Proper preparation, such as cleaning and leveling the old PVC surface, is essential to ensure a successful installation of the new PVC flooring. Additionally, using an appropriate adhesive or underlayment may be necessary to ensure the new PVC flooring adheres properly to the old PVC surface. **

To lay PVC on PVC, you can use PVC cement or adhesive to bond the two pieces together. First, make sure the surfaces are clean and free of any debris. Then, apply the PVC cement to both surfaces and press them together firmly. Allow the adhesive to set and cure according to the manufacturer's instructions before putting any stress on the joint. It's important to follow proper safety precautions and use the appropriate adhesive for the type of PVC you are working with. **

Yes, you can lay new PVC over old PVC as long as the old PVC is in good condition and properly prepared. It is important to clean the old PVC thoroughly and make sure it is free from any dirt, grease, or debris. Additionally, you may need to roughen the surface of the old PVC to ensure proper adhesion of the new PVC. It is also recommended to use a PVC primer and adhesive to bond the new PVC to the old PVC for a secure and long-lasting installation. **

The cost of cheaper PVC flooring can vary depending on the quality and brand you choose. On average, cheaper PVC flooring can cost around $5-$10 per square meter. For a 43 square meter apartment, you can estimate the cost to be between $215 to $430. It's recommended to shop around and compare prices from different suppliers to get the best deal. **

Yes, it is possible to cover an existing PVC flooring with another PVC flooring. However, it is important to ensure that the existing flooring is in good condition and properly prepared before installing the new flooring. Any imperfections or damage in the existing flooring should be addressed before the new flooring is installed to ensure a smooth and even surface. Additionally, it is important to follow the manufacturer's guidelines and recommendations for installation to ensure the best results. **

The term "5th column" refers to a group of people who work to undermine a larger group from within. It is often used in the context of espionage or sabotage. Without more specific information, it is unclear which 5th column is being referred to. It could be a reference to a specific historical event, a current political situation, or a metaphorical use of the term. Without more context, it is difficult to provide a specific answer. **