Another disadvantage of plastic windows is their «environmentality». Many scientists who have studied the influence of polyvinyl chloride on the state and health of people are still confident that PVC is a product of working out the petrochemical industry, which even with the most thorough processing will not lose its harmful properties. And, therefore, over many years of using plastic windows in their apartment, people will constantly receive a certain dose of harmful volatile substances that will “discover” themselves only after several decades.