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I don't want people to see it!
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Ask for yourself.
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n't talk anymore, w
What kind of holes? For exhaust fans?
This is the action of negative pressure. The weather is cold, and the room is tightly sealed. When a window or door is opened, the pressure increases or decreases. This can cause noise from doors or windows elsewhere. >>>More
The source of leakage in the house is relatively difficult to identify, which is a problem for senior waterproofing experts. Generally speaking, the leakage at the top of the window, if it does not leak all the time, will not affect the other walls, and it can be concluded that it is caused by the leakage at the top of the building. However, no matter which part of the leak is, it must be repaired.
Because they don't have quality. Or maybe not in the habit of it.