First, the aging water pipe must be replaced The original waterway pipelines in old houses often have many unreasonable layouts. During the renovation, the original waterways must be thoroughly inspected to see if they are rusted or aged. If the original pipeline uses a galvanized pipe that has been eliminated, it must be replaced with a copper pipe, an aluminum-plastic composite pipe or a PP-R pipe during construction. For example, before installing the bathroom, first block the floor drain and put about 5 cm deep water for testing. If it leaks, it must be redone for waterproof work. At the same time, it should be noted that the dead corner cannot be left after construction. Second, the circuit is not modified Old houses generally have the phenomenon of simple circuit distribution, aging of wires, illegal wiring, etc., which can no longer meet the needs of modern households, so they must be completely rebuilt and re-routed during renovation. If the original line is found to be an aluminum wire, it must be replaced with a copper wire of 2.5 square millimeters. For the installation of high-power electrical appliances such as air conditioners, a 4 mm square section of the line should be provided separately, and PVC insulated retaining wire must be used when embedding. In addition, the new national standards stipulate that the number of fixed outlets in residential buildings should not be less than 12, but there are still many original outlets that do not meet the standard. If a large number of mobile outlets are used, when the current is loaded When it is increased, the mobile socket will have abnormal high temperature due to poor contact, which may cause hidden dangers for electric shock and electrical fire accidents. Third, the "concealed project" is reopened At present, a large part of the quality problems in home decoration are caused by improper construction of “concealed worksâ€. What is “concealed projectâ€? In the process of construction process, the work of the previous process is over, and the part that will be covered by the next one and cannot be inspected is called “concealed projectâ€. Therefore, in the renovation of old houses, special attention should be paid to “concealed worksâ€. For example, whether the pipes, lines, and equipment of various facilities such as water supply, air conditioning, and ventilation in the ceiling have been sealed and tested for electrical insulation and resistance, whether the connection is firm, whether the joints meet the requirements, and whether the flammable materials have been fire resistant. Combustion treatment, etc. are all within the scope of “concealed works†and cannot be inspected after the first installation. Insiders suggest that when renovating old houses, reopening these parts is a good opportunity to eliminate hidden dangers. Owners must strictly check and remove the “hidden works†left over from the past. Four or three "face" transformation is essential During the renovation, the renovation of the wall, floor and ceiling of the old house is the most easily overlooked. Experts suggest that it is best to ask the professional to conduct on-the-spot investigation of the house to see if there is any obvious crack, whether it is flat, whether it is falling off or sanding. . If these conditions exist, repairs must be carried out, including the removal of wall oil, powdered wall paint, etc., and the repair of the base layer, cracks and holes with cement mortar. In addition, after repairing, a primer should be applied to cover it to make the base layer firm. Secondly, it can prevent the base layer from changing due to efflorescence and moisture, and then use a scaled emulsion paint to finish. During the construction, attention should be paid to the cleanliness of the site air, and the dust protection should be done. The tools must be free of debris. Fifth, the door and window update carefully considered Door and window aging is also a prominent problem in the old house, but if the material is sturdy and you like its style, generally it can be renewed as long as it is repainted, but if there are the following problems, you must remove the redo, the main The problem depends on whether the wooden doors and windows are peeled and deformed. If there is, it means that the characteristics of the wood itself have changed, so it must be replaced. In addition, the paint film on the surface of steel doors and windows is detached, and the main body is rusted or cracked. In addition to being unsafe, it is difficult to restore the original shape. In order not to affect the use effect, experts should also remove the redo. Sixth, the old house should be thoroughly disinfected Before renovating the old house, you should conduct a 24-hour to 48-hour water storage leak test on the bathroom and kitchen to check how the original waterproof project is done. If there is no water leakage, it proves that the waterproof treatment is doing well; if there is water leakage The phenomenon must be re-waterproofed. After the waterproof treatment, wait until the ground is completely dry, then lay the tiles and carry out the overall decoration. Moreover, when the toilet is changed to sit in the toilet, the waterproof treatment of the position of the toilet drain must be done. When designing and decorating the top of the toilet, attention should be paid to the disassembly and assembly, which is conducive to future inspection and maintenance. 7. When dismantling old tiles and resurfacing, pay attention to three points. 1. When smashing wall tiles and floor tiles, avoid debris blocking the sewer. 2, handle the waterproof, water pipe as little as possible to use elbows, to avoid poor water flow or blockage. 3, try to use less wood, most wood products contain formaldehyde, affecting health, and the wood will be wet and deformed due to the weather, and the labor costs of wood products are also higher.
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