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Hello friends! Today I simply have to tell you the disappointing results of insulating the ventilation duct or, if you like, the ventilation pipe, which is located in my unheated attic. In general, the damn thing does not work, and I do not know why and in connection with what. It does not work and that's it! Condensation dripped, and continues to drip, even in conditions where no one lives in the house and does not exhale the moist air ... In general, study this video and try to answer the question - what is happening and why does insulating the ventilation pipes not solve the problem of moisture condensation?