The theme of the ventilation air holes is very debatable. When you talk to people, that closed the air holes are harmful to human health and home, many are wondering: "How is it, always did, for a long time to close the air holes for the winter. Now that has changed? ". Everything has changed, building materials and construction technologies have become quite different.
Why not close them in winter?
Have you ever thought why do produhi made? That there was an opportunity to ventilate the underground. And why should they cover in winter? Whatever it was in the house warmer. That is, sacrificing ventilation in favor of a controversial extra heat in the house.
What we have ended up with? Even in extreme cold ground under the house does not freeze. Moisture evaporates from it, but she had nowhere to go, because the air holes are closed. As a result, she is in hiding, gradually penetrating into the house.
You've probably seen the situation when entering the house and felt a nasty smell of damp. All this is of course blamed the fact that he had not included the heating system. But if that was the reason, it was just to cold, not damp. A dampness comes from the underground, Because of its overabundance. A glut due to the closed air holes.
What to do then?
In the current modern homes flooring mostly covered with laminate, linoleum or tile. Therefore, the air flows from the bottom almost. It is therefore advisable to insulation in the floor 3 2- layer of mineral wool, and air holes for winter leave some open. Underground little ventilation and no any no pleasing effect there. You can certainly make warm floors on the ground and forget about this problem forever.
not insulate floors, so if you leave open the air holes in the winter, something through the cracks from under the floor is critical, feet will be cold, so that no boots will not help in older homes. But to close completely not necessarily need to leave very small gaps in produhi. Thus, ventilation and will, and to keep the heat in the house.
The better to close the air holes?
I have found very effective, and in my opinion, the correct method of plugging the air holes. All air holes under the house I I put diffusers. In the summer, cover it completely unscrews it and remove it before the cold weather. By the winter of twists them back, but not tight. I leave a very small gap for ventilation.
Upon the occurrence of very frosty periods with strong winds, I wrap covers on diffusers completely. Do it all the air holes is not necessary. Enough to spin them on the one hand, to avoid drafts. Thus, when using diffusers, ventilation is not broken, and the house is always nice and fresh air.
Here's a way to apply myself. And what thoughts you have on this? Maybe there are some hints and tips? Write in the comments, but keeping up appearances. Do not forget that this is only your opinion, and does not mean that it is only right!