Many in private homes complain that the windows start to sweat in winter. Condensation accumulates on the windowsills, causing discomfort to the owners of the house or even apartments.
And recently we were visiting the father-in-law with the mother-in-law. They have such a problem every year, the windows "cry".
Father-in-law to collect moisture, even made a drain under them, substitute jars. During the night, 200 grams of moisture accumulates from one window. Below you see this house:
An ordinary country house, quite old. The heating system is gravity, gas. Maybe plastic windows are not friendly with wood? No, it used to pour from ordinary wooden windows.
The reason for the increased humidity at home was eventually calculated by me. Found two reasons.
First: They use the subfloor as a storehouse for supplies: potatoes, pickles and jams. Dampness and coldness rise through the wooden floor through the cracks. Although there was an attempt to insulate and insulate the subfloor from the living quarters with the help of polyethylene foam. Bad job done. There are a lot of slots. Dampness and cold still penetrates through it.
The second reason: The walls of a wooden house are insulated with foam from the inside and finished with clapboard. To my objection that: "You can't do that", he didn't pay attention a couple of years ago.
Under the clapboard there is a material that does not release moisture from the room "blown out" from the underground. Thus, all conditions for condensing water have been created in the house.
Outcome:
Cold and humid air rises from the floor through the cracks. Humid air cannot escape from the living quarters, the frame is insulated with foam. Such air is heated by heating registers. Contact with cold glass unit. A "dew point" forms on the glass surface and moisture from a gaseous state passes into a liquid state. Therefore, whole streams are formed from which village cats like to drink.
The solution to the question is simple. It is necessary to tightly insulate the wooden floor from cold and damp streams. Or lay a film on the ground in the basement so that moisture cannot pass into the underground.
By the way, mice settled under the clapboard and in the foam, I will tell you how he gets rid of them in the next article.
Do you think my conclusions are correct or am I wrong? We are waiting for a response from experienced comrades.