What are the causes of cracks in the walls of newly renovated houses?

There are many reasons for cracks, such as: building defects, including insufficient mortar mix ratio when mortar leveling, or cement mortar is not dry and ash, which will cause the cement mortar to crack after drying. It will cause latex paint cracks after the decoration is completed, and the other is that the decoration workers in the construction in order to shorten the construction time, the bottom is not completely dry when the bottom layer is polished, which will also cause this phenomenon.

If it is an irregular crack on the wall as a whole, it is the overall removal, and then re-construction, if the wall appears in a vertical line or a horizontal line into a straight line of cracks, it may be the wall insulation layer joint of the house or the wall expansion coefficient caused by the construction hole reserved during the civil construction of the building is not the same, the crack left, if so, only need to follow the direction of the crack, evenly remove the wall, and use elastic putty to lay the base, Paste the seam tape with glue, and then level it as a whole, and make primer and topcoat in turn.

There are many reasons why cracks can appear in the walls of newly renovated houses. It is possible that the base layer was not treated properly, resulting in cracks. It may be caused by the raw materials of wall paint and putty powder that do not meet the standards.

It may also be due to cracks caused by non-standard construction methods when workers are constructing. Or because of the ambient temperature.

Most of the wall cracks are the hollow bricks and cement used by the builders are of poor quality or suspected of cutting corners, and the cement plastered on the wall is small and not thick enough, and cracks appear as the wall dries. If it is serious, you can communicate and coordinate with the builder of the building, or apply for housing quality appraisal and go through judicial procedures.

<> (1) It may be that the mortar mix ratio is not enough when the mortar is leveled, or the cement mortar is not dried thoroughly and the ash is batched, which will cause the cement mortar to crack after drying, and it will also cause latex paint cracks after the decoration is completed. (2) In order to shorten the time in the process of construction, the decoration workers use elastic putty to base the cracks, which must be removed from the whole and then reconstructed. (3) If there is a crack on the wall with a vertical line or a straight horizontal line, it is likely that the expansion coefficient of the wall is different due to the filling of the insulation layer of the wall of the house or the construction hole reserved by the building during civil construction.

4) The flatness of the wall is poor, and the putty is directly scraped for leveling without using plaster. (5) The quality of the putty used for leveling is not good, the putty is too thick, or the putty is not made well.

Most new houses will find cracks in the walls after they have been renovated, which affects the overall aesthetic effect and is not conducive to long-term living. So what is the crack on the wall of the newly renovated house, and what should I do if there is a crack on the wall of the new house, do you know it? Now let's take a look.

1. What's going on with the cracks in the walls of the newly renovated house.

Cracks will appear on the wall of the newly renovated house, mainly caused by the following reasons: The flatness of the wall is relatively poor, and the putty is directly leveled without using gypsum leveling; The quality of the putty used for leveling is not good, the putty is too thick, or the putty is not made well; During winter construction, the indoor temperature is too low; The putty layer of the walls did not dry and the construction began.

2. What should I do if there are cracks on the wall of the new house?

1. If it is due to the temperature, the wall is decorated with cracks, which will seriously affect the overall aesthetic effect, then you can paste non-woven fabric and PVC mesh cloth on the cracks, and then use paint to repair them.

2. If the paint film on the surface of the wall is cracked, then you can use sandpaper to polish the paint film first, and wait until the cracks on the paint film are polished off, and then you can use latex paint to repaint on it.

3. The reason for the cracks on the wall, if there are cracks in the internal structure of the wall, and cracks appear on the surface of the wall after extension, it will be more troublesome to deal with at this time, and it is necessary to find professionals to deal with them.

4. If there are cracks in the cement stucco layer, then only the putty layer on the surface can be removed, and when the cracks in the cement stucco layer are saved, you can directly use carbon fiber anti-crack cloth to post them in the place where there are cracks.

What is the crack on the wall of the newly renovated house, and what to do if there is a crack on the wall of the new house, I will introduce it here, do you understand? After cracks appear in the wall, it is necessary to use appropriate methods to deal with them according to the specific cause to ensure the integrity and beauty of the wall.

Many families will have cracks in the walls of the house after renovating the new house, and at this time, everyone will consider how to repair it. For those who don't know how to decorate, they don't know how to deal with it, so everyone knowsWhat should I do if there are cracks in the wall after the renovation of the new house?1. Temperature cracks. Common house cracks, has little impact on the safety of the house structure, this kind of cracks, only affect the interior appearance of the house, will not affect the safety of the house, can be appropriate some remedial measures: paste non-woven fabrics at the cracks, post PVC mesh cloth or plug the joints with mortar, and then repair them with paint.

2. Settlement cracks. When the settlement crack develops slowly and weakens after the occurrence of the settlement crack, the crack should be corrected after the crack is stabilized. It will take 2-5 years for the foundation of a new house to gradually settle, and you don't have to worry too much about it after the cracks are repaired, during which time the walls may still crack due to the subsidence of the foundation.

If the crack has little effect on the overall beauty of the house, it can be repaired after the first repair. Corrections are usually filled with cement mortar, polymer mortar or elastic putty, gypsum, and caulking tape is posted.

3. Structural cracks. Ordinary decoration methods can not be corrected, it is necessary to find professional building structure personnel according to the actual situation, corresponding measures.

4. Cracks in the appearance of latex paint. Wallpaper cracks: If there are only cracks on the surface of the paint film, use fine sandpaper to polish the cracks off and paint them from scratch. If the wallpaper is cracked at the joints, moisten it with warm water and apply the wallpaper glue from the beginning.

5. Putty screed cracks. If the crack has been deepened into the putty layer, you can first use a sharp object to expand the crack to a cone size, fill in the caulking plaster and polish and level, paste the mesh cloth or kraft paper and then use putty for leveling, and then paint or paste wallpaper according to the normal process.

6. Cracks in the plastering layer of cement mortar. If the plastering layer presents a large area of hollow and high potato digging, the original plastering layer should be knocked out, and the plastering layer of cement mortar should be made from scratch, and then painted or wallpaper according to the normal process after leveling. However, the cost will be relatively progressive, and the owner can choose the repair method according to his own economic ability.

If there is only a large area of cracking, there is no sand, hollowing, or falling, you can paste a good cloth all over the wall, and then paint or paste wallpaper according to the normal process. The relatively low cost method is to nail a layer of gypsum board directly on the original wall, which requires environmentally friendly milky white rubber and steel nails to be used together.

7. Structural cracks caused by wall cracks: This kind of wall cracks are caused by ** or foundation decline. This kind of problem is unavoidable, and it usually takes about 2-5 years for the foundation of a new house to gradually stabilize.

Therefore, it is not recommended to start the decoration immediately after receiving the house, and it is best to wait for the foundation to stabilize for a period of time before decorating.

After the decoration of the wall of the new house is completed, there will be cracks, when encountering such a situation, we need to know how to deal with it, the above is what to do if there are cracks on the wall after the decoration of the new house and the reason why there are cracks on the wall after the decoration of the new house.