Q: Why is the drywall on my basement ceiling getting wet and bubbling even if there is no pipe leak in the area?
The problem only happens under heating/air
Air conditioning pipes.
A: In summer, when the air conditioner passes through the pipe, the metal will become very cold.
If the pipe touches the drywall, it can cool the surface of the ceiling, causing wet summer air to condense, and then blistering the paint.
In this case, the easiest solution is to glue
An inch thick layer of foam into the area of the bubble (
Then cover the foam with a drywall.
But before you go ahead with the work, wait until you can fill up your AC again for a few hours and then feel the troublesome ceiling area.
If my theory is correct, the ceiling will feel cold to the touch.
If not, then this means that the surface of the pipe itself is sweating and then dripping water from it to the dry wall.
To solve this problem, it is necessary to replace the existing pipes with insulated pipes, or to build a closed box around the pipes to keep the damp air.
Q: Do we really need to heat the basement of the seasonal cabin we plan to build?
We have to drain every fall but we were told that if we choose a full basement we have to heat it up to at least 10C throughout the winter, to avoid mold growth downstairs and damage to the drywall above. Is this true?
A: While mold and mildew are certainly a problem growing in some wet and stagnant basements, winter is never the time when this happens.
In fact, you will find your basement (
You should build it)
Winter may be the lowest relative humidity season throughout the year.
Also, if your basement is completely underground, it may not be much colder than 10C even without extra heat.
I have monitored several unheated basements and the coldest in the worst weather has never dropped below 3C to 4C.
As for the drywall, sometimes there will be no wall cracks in the unheated cabin, and sometimes there will be cracks.
Consider using solid wood or interior wall panels if the risk bothers you.
Q: When it gets cold, why does my house make a loud bang noise?
Is there anything to worry about?
We moved into a 20-year-
The old bungalow last spring, but when the cold weather arrived this winter, it made me look outside for any damage caused by something that attacked us.
Whenever it gets warm, the noise stops.
I'm sorry to hear about your misfortune, but I have good news.
You have described a classic case called a "truss lift", which is actually harmless despite the shocking noise.
The roof of a house like yours is framed with a truss.
These are prefabricated triangular wood that form the sloping surface of the roof.
The truss has been used in almost all the houses built over the last 40 years, as they are a fast and powerful way to build.
The trouble is that the truss sometimes produces internal stresses that cause them to move suddenly in cold weather, and it is this movement that makes the noise you hear.
The top two edges of each triangular truss are located directly below the roof sheath.
This means that the temperature and humidity fluctuations they withstand are much larger than the horizontal, bottom edge of the truss that is snubbed in the attic insulation.
This difference in the situation between each truss causes a change in the shape of the truss-sometimes sudden-especially in cold weather.
While you cannot eliminate the noise, there is no need to worry about the damage to the structure.
During the winter months, the truss lift sometimes causes the gap open above the top edge of the inner partition wall.
Then close in spring and summer.
The closer these walls are to the center of your home, the bigger the gap may be.
Crown styling fixed on the ceiling (
Not the Wall)
Is an effective way to hide the gap while allowing the seasonal Truss to move.