Yesterday I found a lot of hollow drums in the house inspection, what is the impact?

The hollowing is caused by the presence of air in the original masonry and the powder layer, and the plastering layer and screed are tapped with a hollow drum hammer or a hard object during monitoring.

After making latex paint.

Back to the front cracking, serious can fall off, the lowest is not beautiful, spent tens of thousands or hundreds of thousands of beautiful new houses to decorate the cracks everywhere, the effect can be imagined.

The wall surface of the wall tile will crack and fall off. Very beautiful tile wall, with cracks and uneven falling off, what kind of effect can be imagined.

Hazards of ground hollowing:

Lay solid wood floors to have wooden keels, hollow drums are not good to fix the keel, it is not fixed well on the floor will move back and forth, the effect is not to say. In the place where the floor tiles are paved, because the ground is empty, the ground has to be stepped on often, and after a long time, the floor tiles fall back.

What is tile hollowing?

Hollow drum refers to the presence of non-dense between the tile and the adhesive layer caused, different from tooling, tile in the home decoration is not able to appear hollow drum phenomenon, the cause of the hollow drum phenomenon is the construction of the man's craftsmanship and the quality of the bonding material. Once there is a hollow drum, the floor tiles are easy to crack and the wall tiles are easy to fall off.

Regarding the hazards of wall hollowing, the civet cat house inspection supervisor summarized these points:

1.Affect the aesthetics. If there is a hollowing phenomenon in the wall, which is not found in the later construction, cracks may occur after brushing the paint.

2.Safety hazards. After a period of time, the surface of the wall will protrude outward, and cracks will appear at the lightest, and the wall skin will fall off at the worst; If it is tiled, the hollow wall can not hang the tiles, and over time, it will cause the tiles to fall off, cause the consequences of smashing the floor tiles and furniture, and even, cause certain hidden dangers to our personal safety.

3.The decorative effect is affected. If hollowing and cracks occur in places where the window sill and balcony are in direct contact with the external interface, the cracking will inevitably cause water seepage, which will not only reduce the protective effect of the wall, but also affect the decorative effect.

Of course, so the problem of house acceptance and hollowing cannot be underestimated:

1.Observe with the naked eye: the hollow drum is generally slightly higher than the surrounding overall plane, and is often accompanied by cracks, and you can find that the inside is empty when you press it with your fingers.

2.If the sound of "knock knock" is made, it means that there is a hollow drum inside, and if it is a load-bearing wall, there is a serious quality problem in the house.

The hollow drum is caused by the presence of air in the original masonry and the plaster layer, and when detecting, the plastering layer and the screed layer are knocked with a hollow drum hammer or a hard object to make a knocking sound for the hollow drum The "hollow drum" in the quality of the house generally refers to the hollowing phenomenon between the ground, wall, ceiling decoration layer (plastering or pasting surface bricks) and the structural layer (concrete or brick wall) due to pasting and unstable combination, commonly known as "two layers of skin".

You can go to the property and the developer, and generally they will repair it for you - you have to save your reputation and sell more houses!

It doesn't matter if the area of the hollow drum is not large, and there are no cracks, it does not affect the use. Otherwise, just knock it out and do it again.

Look at how big the hollow drum is. If the area is very small, you can ignore it; If the area is less than 10cm, it can be treated with cloth during decoration; If the area is large, it should be broken with an empty drum, filled with gypsum, and then processed.

If you have signed the handover, even if the developer left it, they will not admit it, and once the owner signs the handover, everything has nothing to do with the developer. You can try to find a renovation company, if you have already started renovation, eighty percent of it is a problem during the renovation.

If you find it when you go to get the house for inspection, you can temporarily stop signing and let the developer solve the holding problem for you; If you have already signed and are about to renovate, ask the renovation company to help you remove the wall skin and repaint it.

Shovel off the wall skin first and use a gypsum-based product. First of all, use formaldehyde-free rough leveling to level the wall, and then use gypsum-based mildew-proof and water-resistant batch soil to make the wall after the full batch, and then brush the paint on one bottom and two sides. There are also some wall hollows that are difficult to renovate, it is recommended to use the method of perfusion repair, which has a fast operation time and will not damage the base layer, especially in the underground garage, factory and other sites, and the construction process does not affect the use of the owner, which is a more convenient way.

The Code for Acceptance of Construction Quality of Building Ground Engineering (GB50209-2002) stipulates that as long as the hollow drum area does not exceed 400cm2, that is, the general 20cm*20cm, the developer has no obligation to repair it for you, but it must be dealt with for you if it exceeds this area.

If you want to deal with it, you should first shovel off all the hollow drum parts, and it is best to enlarge it a little. Don't tell you about the construction process, just go straight to the popular one:

1. Shovel off the hollow drum part.

2. Rinse the surface with water quickly, leaving no loose particles and dust.

3. Mortar leveling.

4. Fiber mesh.

5. Mortar plastering.

6. Congratulations, it's repaired, pay attention to maintenance.

7. Hey, hey, that's good.

Only those with an area greater than 20*20cm can be called hollow drums, and general property maintenance is also on this standard! But not all hollow drums larger than 20*20cm have to be repaired, for example, your house is delivered earlier, placed for a longer time, if the hollow drum is not cracked, then I recommend that you still do not repair, unless you want to fix nails in this place! The meaning of repairing the hollow drum is actually to put it bluntly, it is afraid of cracking in the future and affecting the decoration!

The longer the house is left unattended, the more faults will appear!

The method of hollow drum repair: use a cutting machine to cut the seam around the hollow drum, the cutting area is as large as possible, cut down about 1 to 2cm, and then chisel off with a chisel to remove the floating and sinking, moisten with water, and then use cement mortar mixed with 107 glue to lay the bottom, and finally use 1:3 cement mortar to evenly wipe twice times

Look at which part, if it is a household partition wall machine, the outer wall should be polystyrene particle insulation plaster, and the knocking gives people a feeling of hollowness, which is normal and has no quality problems. If the plastering of other plastering materials is more than 200 square centimeters, the acceptance form should not be signed until the developer repairs.

It is normal that the walls of Beijing require 25 centimeters, and some non-load-bearing walls are empty and do not need to be repaired.

It is normal that Beijing walls require 25 centimeters, and some non-load-bearing walls are empty.

See if it's a load-bearing wall, if not, it's fine.

Reasons for the hollowness of the new house:

Due to the presence of air in the original masonry and the powder layer, when detecting, the plastering layer and the screed layer are knocked with a hollow drum hammer or a hard object to make a knocking sound for the hollow drum The "hollow drum" in the quality of the house generally refers to the hollowing phenomenon between the ground, wall, ceiling decoration layer (plastering or pasting surface bricks) and the structural layer (concrete or brick wall) due to pasting and combination, commonly known as "two layers of skin".

Hollow drum workaround:

The common way to repair the hollow drum is to shovel the sand ash, refill it with quick ash, and re-batch the putty after drying.

However, some hollow drums, due to the location and other reasons, it is difficult to chisel out, such as the hollow drum between the concrete protective layer and the base layer is more difficult, some more expensive stones, the hollow drum between the ceramic tile and the base layer, and the stone damage economic loss is greater after chiseling. This type of hollowing can be solved by the method of perfusion repair.

The AB resin grouting repair of some engineering crack treatment centers can inject high-strength adhesive into the hollow drum, and the empty position can be filled with full adhesion and compression resistance. This kind of grouting repair hollow drum method is fast, does not damage the base, especially in the underground garage, plant and other sites, the construction process does not affect the use of the owner, is a more convenient way.