Floor decoration must not be sloppy. Leveling acceptance criteria should be known

Generally speaking, the ground leveling we mentioned can be divided into two types: one is the original cement mortar ground leveling; the other is the self-leveling leveling.

The meaning of both is to level the original ground of the building to make the ground flatness reach a certain standard or cover the role of the ground pipeline. Cement mortar ground leveling uses common cement mortar, and the leveling level is closely related to the worker's technical methods. In general, the leveling thickness is high, and the flatness control is difficult to achieve maximum accuracy. The leveling quality is directly proportional to the worker's workmanship. If the worker's workmanship is not good, it is easy to produce a lot of ground increase but it is still uneven. At present, this method of leveling cement mortar is relatively backward.

Self-leveling is a relatively new leveling technology, which began to appear in the domestic construction floor industry in 2005. It uses highly polymerized self-leveling cement for ground treatment. It has many advantages. The thinnest leveling can be up to 3 mm. The thickness can be controlled well. The ground strength and flatness are much higher than cement mortar leveling. It is usually used for leveling in all kinds of sports venues, hotels, office places, precision electronic workshops and other places with high ground requirements. It is also suitable to use self-leveling ground leveling in front of home decoration and paving wooden floors. It is said that the prices of self-leveling leveling and cement mortar leveling in general regular ground companies are basically the same.

My leveling choice is the former-the original cement mortar floor leveling. The reasons are as follows:

1. Inertia + inertia. It ’s okay to find anyone to do the ground leveling. Then let the decoration company that always works for me do it. Anyway, my construction site belongs to Dasha. I hardly go there. I have to stare at another company to do the ground leveling. , Trouble ~ And I am not familiar with the related companies that do self-leveling cement leveling, now I look at how troublesome it is! Let's use a familiar company.

2. The requirements are not high. My ground leveling has two purposes, one is the buried pipe, and the other is to prepare the laminate flooring for the future, so the thickness is thicker, unlike some owners ’homes that only do a slight leveling of the ground, so it is not necessarily a technical comparison Advanced self-leveling cement leveling, using the original cement mortar ground leveling is completely enough.

3. Unfamiliar with the process and price of self-leveling. I have never studied self-leveling cement leveling and I am not familiar with it. I have heard that money is calculated in barrels and how much is used. But my house is an old house. I suspect the ground is slanted. If you want to find the level, how many barrels do you have to use? So if you dare not use it, use the original cement mortar ground leveling method to find a smooth one.

The ground leveling is usually due to the installation of wooden floors, and there is no need to lay keel floors. Because if it is not necessary to level the floor when laying tiles, it is enough to lay directly on it, and use the tiles to level the floor. The floor with keel can also be leveled by the keel. Only floors that do not require keel need to be leveled.

Renovation network reminder: For leveling standards, we generally use a two-meter-long ruler for carpet measurement, that is, at least the cross direction measurement at the same position. If there is a gap of more than 3 mm or even 5 mm below the ruler, it means that the ground is uneven and has exceeded the pavement requirements for laminate flooring or solid wood composite wood flooring.

In many cases, some decoration owners will feel that 5 mm is irrelevant, and feel that the clearance required by the floor company is less than 3 mm is a big deal, so they signed the construction company's construction commitment letter and forced to install the floor. As a result, the floor appeared airborne, the lock was damaged, and the corners were dusty. At the same time, the floor has a seesaw-like feel, and there are more troublesome things at this time. You are worried because the floor is broken, and because the floor of your home is ringing every day, the neighbors downstairs come to you and you will also be worried. However, due to forced construction on the ground that does not meet the floor flatness requirements of the floor company, the floor company cannot give you any related maintenance and compensation more worrying. Therefore, if you are installing the floor, try to do the ground leveling work in advance, because the floor company is not responsible for the ground leveling.

Home improvement ground flatness standard:

[Severe Unevenness]: Drop within 2-3 square meters ≥5-10 mm

[Uneven ground]: drop within 2 square meters> 3 mm

[Qualified on the ground]: Drop within 2 square meters ≤ 3 mm

In addition, if the strength of the ground surface after leveling is not enough, you can kick ash with your feet. This is what we often say is ash (or sand). This phenomenon can be very annoying when you clean the floor after installing the floor. Because no matter how you clean it, you can't clean the corners and the ash from the floor beside the wall. This is because people usually put pressure on the floor when walking on the floor, making the floor compress the air under the floor like a bellows, and the air under the floor dissolves with the exchange of air above and below the floor, which causes the ash to kick Caused by gaps in the base line and corners. This is the same as why the "floor companion" is laid under the floor, but it can purify formaldehyde and other household pollution principles within 1 meter above the surface, because the air above and below the floor is soluble.

The gap between the floor and the floor seems to be tight, and it is difficult for water to enter, because the water has tension. The pollution gas is molecules, and the gap between the floors is an open door for the molecules to enter and exit freely; at the same time, the expansion and contraction joints that must be left between the floor and the wall during the paving process also provide air circulation up and down Spacious passage; in addition, when we step on the floor, it will cause a continuous bellows effect between the floor, the floor mat, and the ground. The undulation of this bellows effect is commonly known as the foot feeling, which further enhances the floor up and down The air or polluted gases are mutually dissolved. Therefore, the role of the "floor companion" laying under the floor is basically the same as that laying on the floor. Just like a huge indoor air purification filter under the floor, it continuously degrades the pollutant gas in the surface space above and below the floor, creating a healthy and fresh home environment, which is beneficial to the health of the family.

If the strength of the ground surface is sufficient after leveling, in addition to a reasonable ratio of cement and sand, the surface must be calendered, and it is not enough to press it once or twice. My home ground was pressed four or five times back and forth. To polish the ground, people must stand on the ground, and the cement must reach a certain degree of solidification. This time is generally 4 or 5 hours, so my workers arrived at the ground level at 7 o'clock in the morning, because once it came late, such as construction started at noon, then it would take a few hours to spread the cement mortar first, and then wait 4. After 5 hours of solidification, it is midnight, and there is no time for calendering. Therefore, the work that starts in the afternoon can generally be classified as unqualified ground leveling. The quality is difficult to guarantee in the later period, and the ground is easy to dust (or sand).

Maintenance after the ground leveling is also very important, the general surface should be regularly watered maintenance. Cement and cement, the more water there is, the stronger it will be. If there is no water, it will become mud!

I have received inquiries from netizens many times, and some of them are related to problems that occur after ground leveling, such as sanding, cracking, and hollowing. The appearance of this phenomenon should be normal in the construction of ordinary residential houses. The main reasons are as follows:

1. The floor height of buildings is generally short, and no one wants to sacrifice the space height because of the substantial increase in the ground height, so the ground leveling floor is generally thin. The characteristic of cement is that the thicker the stronger, the leveling thickness is preferably greater than 4 cm, and the current leveling thickness is generally less than 4 cm, so cracking or hollowing is common.

2. Many workers now basically do not live on the construction site, unlike the past, construction workers are used to living on the construction site. The main reason for not living on the construction site is to make more money, reasonably allocate the time difference and the construction period difference, run different construction sites every day or every few days, it is not convenient to rest on the same construction site, not to consider the owner's feelings. This causes the ground after leveling to not be watered in time for maintenance (normally it should be watered every few hours to maintain, but no one stays on the site at night how do you maintain), which can easily lead to sand, cracking or emptying.

Renovation network reminder: Under this premise of helplessness, we can only prevent and make up through the following methods-

1. Properly adjust the mixing ratio of cement and sand. The ratio of cement to sand is 1: 4 or 1: 4.5. It is better to add glue when stirring the mortar;

2. If water spray maintenance is not possible, the ground can be wetted by covering the ground with a wet grass curtain or plastic cloth to prevent the water from drying too quickly and causing cracking;

3. Slight ground peeling, cracking and hollowing can be ignored, which does not affect the use. Ordinary peeling, cracking, and hollowing can remove the broken place and fill it with gypsum for leveling. After the gypsum dries, then brush a layer of wall or ground on the ground surface;

4. Large areas of peeling, cracking, and hollowing may need to be done again. This may be a construction quality problem.

Source: Stainless steel screen furniture manufacturer Gang Leren www.gangleren.com