Many self-built houses have leaks in their exterior walls, which turn the beautiful exterior walls into a dark mess, and even affects the interior, which is really annoying!
Exterior wall tile decoration water seepage and alkali reversion
Why does this happen? ↓
As long as we observe carefully, we will find that the decoration of the exterior wall of our house or the houses of our neighbors will more or less have some problems caused by leakage.
This "reverse alkali" phenomenon as seen in the picture above is really quite common. The reason is that rainwater seeps out from the gaps in the tiles, alkaline substances in the wall seep out, and remain on the tiles! For a long time, has formed phenomena such as nitrate, alkali, and blackening.
In serious cases, this situation may occur↓↓↓
In fact, if we take a closer look, it is not difficult to find that this phenomenon caused by leakage usually appears about one meter down from the top of the house, and then spreads downwards. This is basically the case for the entire wall in severe cases.
According to my observation, this is caused by water seepage between the brick fence on the roof and the floor. In other words, there is a gap between the fence built on the floor and the floor. The rainwater flows along the gap to the outside of the exterior wall and seeps out from the gap reserved for the exterior wall tile decoration.
In self-built houses, any house with a flat floor and a floor fence made of bricks will basically have this situation.
In order to avoid this situation, when some people are building the top floor, they deliberately make the slope of the floor very steep. This makes drainage more convenient. On rainy days, rainwater can be drained faster through the drainage pipe, thereby reducing the situation of seeping into the exterior wall.
This does have a certain effect, but according to the houses I have seen, I don’t know why. In most houses, the reserved drainage outlet position is higher than other places, and there is basically water accumulation.
Therefore, many people who do not need to use the floor to dry things, when conditions permit, build an extra layer of roof on the attic, for heat insulation and waterproofing!
Adding an extra layer of roof on the roof of the building does have a very good waterproof effect. As long as it does not involve illegal construction, as long as you think it looks good and you don’t need to stand on the roof to enjoy the beautiful rivers and mountains, it is indeed a good idea to build a roof on the roof of the building.
However, the cost of building a shed roof is not low, and there are many restrictions in some places. It does not mean that you can build it if you have money.
Actually, there is a simple operation that can avoid this leakage problem ↓
When we build a house, we will add a safety fence on the top floor. The simplest way is to build it directly with bricks. After the exterior wall is decorated, it will become integrated with the house.
This kind of brick fence is actually the most susceptible to water seepage. The reason is that we have ignored a problem↓
We have ignored the fact that the brick fence is easily "separated" from the floor. Even if the mortar used during construction is high in concentration and strong in viscosity, gaps will inevitably appear, leading to leakage.
Because we ignore the natural settlement of the house foundation and the "biting force" between the brick fence and the floor, even if the fence is plastered inside and outside and then other decorations are made to strengthen leakage prevention, cracks will appear sooner or later, and leakage will happen sooner or later!
Its actually should This should be done to be safe↓
We should set up such a " reverse beam " on the last floor. In this way, no matter what kind of fence is made, there is no need to worry about water seeping from the floor to the exterior wall.
However, after reading a lot of popular science, many people know that this is indeed very effective, but the construction workers at home find it troublesome and do not want to do it, so if they do not insist on it, they generally will not volunteer to help!
Therefore, in order to avoid leakage of the fence on the roof, the reverse beam must be done well when building a house. It is better to spend more money than to take chances and ignore this process.
postscript ↓
I would like to recommend this to friends who are planning to build a house↓
Don’t underestimate such a process. Just such a reverse beam is actually the water retaining strip of the entire floor. It can prevent many troublesome things from happening and can block more than 90% of the leakage problems in the exterior wall. It is not unnecessary or dispensable, but really necessary! You must remember ?
