Compared with the new house decoration, the old house decoration is fundamentally different. The renovation of old houses requires the demolition and renovation of the original decoration, so the steps and problems to be paid attention to will be more complicated than the renovation of new houses. In order to let the owners better understand the related matters of the old house renovation, we will bring a detailed explanation of the renovation process and matters needing attention below, hoping to help you.
Old house renovation process:
1. Demolition project: mainly refers to the demolition of doors and windows, walls, tiles, floors, non-load-bearing walls and water circuits.
The demolition project seems simple, but it is not simple at all. When a decoration owner was doing the demolition work of the old house renovation, he directly found several handymen who looked very powerful downstairs, but these handymen knew nothing about what should and should not be demolished in the demolition project. They just smashed it with a sledgehammer. As a result, the next day, when the master of the decoration company came to work, he found that there was something wrong with the kitchen circuit. It turns out that the handyman is in it. Then I found that the water in the bathroom was blocked. When I checked that the original floor drain was filled with bricks and ashes; What's more, the owner's neighbor came to the door, saying that his bathroom was separated from the owner's bathroom by a wall, and several tiles on the wall were shattered, asking the owner to pay him compensation and so on.
It can be seen that the old house renovation and demolition project must not be operated by handyman who does not know professional decoration knowledge, otherwise it will bring more trouble to himself.
1, doors and windows removed
The aging of doors and windows is a prominent problem in the old house, but if the material is solid and you like its style, you can look brand-new by repainting it, but if the wooden doors and windows are peeled and deformed, they must be replaced. In addition, the paint film on the surface of steel doors and windows falls off, and the main body is corroded or cracked, which is not only unsafe, but also difficult to restore to its original state. In order not to affect the use effect, it should be torn down and redone.
2, wall ground demolition
If the wall skin is water-resistant putty, it is difficult and unnecessary to shovel it off, and it can generally be kept. The repainting process can be directly painted after sanding with sandpaper, or two layers of putty can be hung and then painted. If there are many small cracks in the wall, you should first paste kraft paper or even polyester cloth. If the wall is not waterproof putty, you can shovel it off and start over.
When smashing wall bricks and floor tiles, avoid debris blocking the sewer; Only solid wood flooring, solid wood composite flooring and bamboo flooring with a surface thickness of 4 mm can be renovated. In addition, local renovation will also cause differences between old and new floors, and consumers can't blindly renovate floors.
3, channel demolition
In the old house, there are many unreasonable or corroded layout of the original waterway pipes, so the decorator needs to thoroughly check the waterway. If the original pipes are obsolete galvanized pipes, they must all be replaced with copper pipes, aluminum-plastic composite pipes or PP-R pipes during construction.
4. Circuit disassembly
There are some phenomena in the old house, such as simple circuit distribution, aging wires and illegal wiring. , can no longer meet the electricity demand of modern families, so it needs to be completely transformed and rewired during decoration. Because the previous wires were all aluminum wires, they should be replaced by copper wires and PVC insulated protective tubes should be used. For the lines of high-power electrical appliances such as air conditioners, the lines should run independently; As for the socket problem, we must add more sockets, because the sockets in old houses can't reach the current number of electrical appliances.
Second, concealed engineering construction: waterproof construction, waterway transformation and circuit transformation.
1, waterproof construction
(1) Brush the waterproof coating for the first time. Before construction, ensure that the construction site is clean and dry, and the waterproof coating should be fully coated without omission, firmly combined with the base, without cracks, bubbles and falling off. Draw the same height. The thickness should meet the product requirements.
(2) Brush the waterproof coating for the second time. Note that there needs to be a certain time interval between the first pass and the second pass of waterproof coating, and the second pass of coating can only be carried out after the first pass of coating is dried, and the specific time depends on the coating. If the interval is too short, the waterproof effect will be greatly reduced, so the decoration owner should pay attention to whether the construction personnel have completed all the processes.
(3) Laying a protective layer. In order to prevent the subsequent construction from damaging the waterproof layer, it is necessary to lay a protective layer on the surface of the waterproof coating. The protective layer shall completely cover the waterproof layer without omission, and be firmly combined with the base layer without cracks, bubbles and shedding.
(4) Closed water test. In the closed water test, the water at the highest point on the ground shall not be less than 2 cm, and it shall be kept for at least 24 hours, and no leakage shall be observed as qualified. If there is any leakage, it needs to be redone. It must be negligence.
2. Waterway reconstruction
(1) Replace the water valve. The waterways of old houses are mostly galvanized pipes, which are easy to rust and scale, and the exposed pipes are not beautiful. The renovation of new houses can be partially rebuilt and replaced, and the old houses should be completely replaced from the inside of the water diversion valve in charge. Because the bathrooms in the old houses are not very big, even if all the water pipes are replaced, the workload will not increase much. On the premise of ensuring the safety of water supply, the pipes used for decoration should be shortened as much as possible, but they should also be easy to maintain and beautiful.
(2) The waterway is slotted and concealed. The toilet in the old house is very small. In order to expand the space, it is very necessary to open the water channel and take the concealed pipe. But the water pipe buried in the wall can't have a joint, and it is better to be a complete pipe. Generally speaking, nine times out of ten water pipes leak because of joint problems. Before installing sealed tiles for water pipes, it is best to test the pressure with pressure equipment. Under normal circumstances, the construction team usually uses whether the water pipe leaks under normal circumstances instead of the suppression test.
(3) according to the new pipeline, clean up the old pipeline. The original sewer pipes and floor drains in old houses can no longer meet the needs of modern people. Only by adding pipes to move sewers, it is necessary to check whether the old pipes are unblocked before the new pipes are connected with the old ones. Cleaning up at this time will avoid a lot of trouble in the future. Many modern toilets can't directly install and use the original sewage outlet of the old house because of the pit spacing and drainage mode, so it is very difficult to move the sewage outlet. Encounter the above problems generally need to use toilet shifter.
(4) After the waterway reconstruction is completed, test the water pipe again with a press.
3. Circuit conversion
The construction procedure of circuit transformation is generally as follows: the construction personnel determine the anchor point with the owner according to the design drawings → the finished product protection at the construction site → wiring in the wiring direction → slotting in the wiring direction → opening the junction box → cleaning the muck → fixing the wire tube and junction box → pulling the steel wire → wiring all kinds of strong and weak electricity without exposure → sealing the cell → conducting the strong and weak electricity acceptance test.
3. Foundation engineering construction: wall foundation treatment of old houses, room type renovation, door and window removal and replacement, balcony insulation, etc.
After the demolition works and concealed works are carried out in the renovation of old houses, the next step is to carry out basic works, including masonry works, water and electricity installation works, mud and water works, wood works, painting works and water and electricity installation works. Before carrying out these projects, the decoration owner needs to buy all the auxiliary materials and main materials needed for decoration, so that the decoration project can proceed smoothly.
Before the renovation project starts, the decoration owner needs to determine the building materials listed by the cabinet and foreman. Before the installation of cabinets, cabinet manufacturers need to go to the door three times, one is the preliminary measurement before the installation of tiles, the other is the accurate measurement after the installation of tiles, and the last is the installation; Before the renovation, the foreman will list some building materials that need to be purchased before the renovation, such as pipes, wires, waterproof coatings, jointing agents, etc.
After the renovation, purchase other building materials according to the renovation construction steps.
Fourth, conventional decoration: As long as the demolition and concealed works are in place, conventional decoration is actually very easy.
The steps of conventional decoration and new house decoration are similar, including carpentry, bricklayer, painter, kitchen and bathroom ceiling, cabinet installation, wooden door installation, floor installation, wallpaper paving, radiator installation, switch socket installation, lamp installation, hardware sanitary ware installation, curtain rod installation, pioneer cleaning, furniture entry, household appliances installation, home accessories and so on.
Matters needing attention in renovation of old houses:
First of all, finished product protection needs to be careful.
Finished product protection is a very important link in kitchen and bathroom decoration. For natural gas, water meters, pipes, heating, doors, windows, cabinets and other items that do not need to be changed, all items should be wrapped with professional protective film and then pasted with dry strips to prevent furniture from being damaged during construction.
But not every finished product can be kept. Experts remind owners to be psychologically prepared when carrying out kitchen and bathroom renovation. After the porcelain such as sanitary ware is removed, "it is almost impossible to expect to be intact." In addition, due to the different materials used in the installation process, it may be difficult for some porcelains to remain intact when disassembled. According to reports, sanitary ware, column basin, toilet, etc. Those sealed with glass glue can generally be kept. The toilet with cement sand sealing and edge sealing combined with brick needs to be completely smashed before it can be dismantled. As for the aluminum gusset plate or plastic steel ceiling with a service life of four or five years, it can also be kept, but the corners will definitely be damaged after being removed. Owners need to go to the market to play a supporting role, but it is not expensive.
As for cabinets, 99.5% of cabinets need to be replaced if wall tiles and floor tiles are to be demolished. If the cabinets are embedded in the wall and the upper cabinets and lower cabinets are installed flexibly in the old house, they can be kept. According to experts, the previous cabinets are very old and inconvenient to operate. Unless they are renovated for one or two years, they are still valuable. General owners need new integrated cabinets.
If the original wall and floor tiles do not leak, it will not affect the use. If the owner needs to keep the wall and floor tiles, a protective film can be affixed. However, if only one wall and floor tile is kept, experts suggest that it is difficult to ensure that the waterproof treatment of the joint between the wall and the ground is proper because of the internal angle, so either one side is not replaced or all the wall and floor tiles are replaced.
Second, the demolition process
The demolition and transformation in the kitchen mainly includes the demolition of ceiling, wall tiles, floor tiles and cabinets and the transformation of water circuits. The demolition and reconstruction in the bathroom includes the demolition and reconstruction of the ceiling, urinal, column basin and mop pool of the old house. All you have to do is tear these down and knock them off. Experts said that if it is necessary to replace the wall tiles and floor tiles, then no matter whether the raw materials below are glued or cement mortar, all the tiles need to be removed until the wall surface is exposed, and then new wall tiles are pasted with cement mortar, so that the original wall tiles and floor tiles can no longer be used. As for whether to carry out hydropower transformation, everything depends on whether the owner's operation is convenient and practical, such as whether the faucet is in the way, whether the circuit meets the needs and so on. However, if it is the galvanized pipe of an old house, it will rust after a long time and affect its use, so we should consider changing it.
It is best not to change the position of the toilet in the bathroom. According to experts, it is very likely that the toilets in the whole building are connected to the sewer in the same place. If the process is troublesome, even if the position of the toilet is raised, it may still cause poor water supply, so we should carefully change the position of the toilet.
Adhering to the principle that heating and natural gas will not move, if there is any change in the water heater, you need to contact the professional of the manufacturer. It is emphasized that natural gas must be handled by natural gas companies and must not be changed without authorization.
Third, waterproof is very important.
In hydropower transformation, experts suggest that it is best to take the open pipe. Although the concealed pipe will be more beautiful, if it is not well waterproof, the water will not leak out, but will go down the wall. "It is very likely that the neighbor's kitchen downstairs is flooded, and I don't know." If the concealed pipes are not waterproof, all the pipes should be cut to see what the problem is. If you choose open management, even if there is a problem, you can see what the problem is at a glance and deal with it in time. According to reports, the method of water pressure test is generally used to test whether waterproofing is qualified. For example, if the PPR pipe has an interface, apply 6 kilograms of pressure on the interface to see if there is water leakage. If there is no water leakage, the waterproof has passed the test.
Waterproofing the bathroom is equally important. After the floor tiles are removed, you must pay attention to leveling. When they are dry, the ground will be completely waterproof. Because the wall has been waterproof, it is generally waterproof according to actual needs. The wall around the shower is about 1.8 meters high, and the bathtub and the wall root are 30 centimeters upward. In addition, the ground slope of the bathroom should be reasonable, not too small, suitable for water to flow away from the floor drain. However, if we blindly pursue drainage and make the slope too large, it will create the impression of uneven ground and affect the overall effect.