The main reason for the quality problems of home improvement is that the construction process is not standardized. The renovation is underway, and quality is the key moment. Today, we introduce some common non-standard construction projects and preventive techniques that should be mastered so that you can refer to it when you are decorating your house.

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â–  Electrical series: In the home decoration, the construction of the electrician does not seem to be a lot on the surface, but many potential problems leave many hidden dangers for your future life. The common problems are: short circuits in distribution lines, weak television signals, interference in telephone reception, etc. This often has a long-term negative impact on your life. Why do you have these problems?
1. Excessive line joints and improper handling of connectors are prominent reasons. Some lines are too long and some joints will be produced when the electrician operates. However, due to the limitations of the technical level of some electrician masters, there may be reasons for lack of sense of responsibility, the line of the joints, insulation and moisture treatment is not good, there will be a short circuit, short circuit and other phenomena. Last year, there was a report about the damp electricity of a residential wall. This is the reason.
2. The lines that do the concealed treatment have no casing, and they cut corners for cutting costs. The bushing is used to protect the concealed circuit from damage. If the bushing is not used or an inappropriate bushing is used, damage to the circuit during construction or in future use will leave you hidden dangers.
3. The well-established route was damaged by subsequent construction. The common ones are: the wall line is interrupted by an electric hammer, and the floor nail gun penetrates the PVC line pipe or sheath line.
4. The distribution line does not take into account the different rated currents of the wires of different specifications. The "small horse-drawn cart" causes the line itself to be overloaded for a long time.
5. Different lines go the same line. If the television antenna, the telephone line and the distribution line are threaded into the same casing, the reception of the television and the telephone is disturbed.
How can these problems be prevented?
1. Lines to minimize joints. If wiring is necessary, the distribution line must be well-connected, insulated, and moisture-proof. If conditions permit (under the appropriate engineering quotation), you can also use “涮” or use terminal blocks; the coaxial cable connection of the TV antenna is best. With a splitter or junction box, the telephone line is similar to a TV line.
2. The concealed lines on the walls use PVC rigid lines, which are matched with the line numbers. The ground lines must be considered to be under pressure for a long period of time and will be affected during construction. Therefore, it is best to use water gas pipes (ie, iron pipes). And to be fixed, do not let it move.
3. Concealed lines should be marked so as not to be inadvertently damaged by the construction personnel in the next process.
4. The selection of distribution line wires should pay attention to its rated current.
5. The TV antenna line and the telephone line are respectively taken out of the casing.
Tip: To reduce unnecessary joints as much as possible and to use suitable line pipe should pay attention to the construction of the line.

■ Plumbing Series: After you stay in your new home for a short time, you may find quality problems related to “water”. Such as leaking water pipes, odors in wash basins and vegetable sinks, small bathtub showers, inconvenient use of sanitary ware, etc. What is its root cause?
1. Pipe Leakage: Assuming there are no quality problems with pipes and fittings, we will introduce the reasons for the leakage of cold water pipes and hot water pipes, respectively.
a. Cold water pipe leakage is generally very easy to understand, that is, water pipes and pipe fittings are not sealed when connected.
b. In addition to sealing the hot water pipe leak is not done well, there may be improper use of sealing material.
2. The reason for the small water flow: In the construction of plumbing, in order to connect the entire line, it is necessary to thread the sawed pipe. If the thread length is too long, when the pipe is screwed into the pipe fitting (such as the elbow), the water flow will be too deep. The smaller the cross section, the smaller the water flow.
3. The hose bursts. Most of the pipes connecting the main pipe to the sanitary fixture use a serpentine hose. If the hose is of poor quality or the hose is tightened when the plumber installs it, stress concentration tends to occur, and the hose will burst after a short period of time.
4. Overflow when the toilet flushes. The reason for this is that when the toilet is installed, the recessed portion of the seat is not sealed with an oil filler, and when flushing, the sewage overflows from the gap between the base and the floor.
5. Wash the water back to the odor. Finished bathroom renovation, wash basin back to the smell. In the renovated bathroom, the position of the wash basin often shifts to the wrong place with the water entrance, and it is often difficult to directly use the wash pipe when the wash basin is bought. The installation worker plans to save time, likes to use the washing machine water pipe to make basin water, but generally do not do S-bend, resulting in the wash basin and the sewer pipe straight, smell back from the sewer.
To prevent "water problems" you can refer to the following comments:
1. To solve the problem of leakage of cold water pipes, construction workers may be required to bind the sealing material PTFE belt (commonly known as raw material belt), and pay attention to the use of plastic bags for some plumbing workers.
2. The PTFE belt is easily heated and shrinkage due to heat for a long period of time. Therefore, the hot water pipe sealing material generally uses hemp and lead oil.
3. To avoid bursting the hose, first use quality products. When installing, the hose should be smooth and the bend should be as slow as possible. Do not bend it.
4. When installing the toilet, fill the groove in the base with an oily putter, and then put a glass of glue around it.
5. Wash Basin If you use the hose of the washing machine to make water, be sure to put the hose in a circle and fasten it with a rope to form a water seal to prevent back odor.

■ Waterproofing works: It is often heard that people say: “It was the decoration company that damaged the bathroom's waterproof layer when they decorated it. It caused leakage of the ceiling of the next floor of the household's bathroom.” Actually speaking, the waterproof layer is subject to construction. There are many reasons for the destruction and it cannot be said that the decoration company is guilty. The real sin is that the waterproof behind is not done well.
So how can we do the waterproof layer well?
1. Be sure to clean the base that is ready to be waterproof, and keep the surface dry as much as possible.
2. According to the technical requirements of waterproof material construction. Here is to explain that the leaking part of the bathroom is mainly in the roots of the upper and lower water pipes and the foot of the wall, so when these places do waterproof, it must be allowed to “eat”, and its practical fingers can be checked. Also note that waterproofing needs to be done not less than 25 cm from the foot of the wall.
3. If a wall of a bathroom is a light wall, it is necessary to waterproof the entire wall.
4. After the waterproof material is completely dry, a 24-hour closed water test is required to see if there is any leakage. Waterproof in this way generally does not leak.

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