There is a technology to reduce noise between floors... 'Outside' to save construction cost

<Anchor>

Today (the 4th), we will continue to report on noise between floors.

Yesterday, I focused on the problems of related systems and measurement methods, but there are many ways to reduce noise between floors in the field, but there are many points out that they are not being used.

Let's talk more about what this is about, after watching the report by reporter Jo Yoon-ha.

<Reporter>

At present, the only measure against noise between floors is to lay 2cm thick general Styrofoam under the floor.

A construction company put a specially developed sound-absorbing material in this Styrofoam and mixed more various building materials to make the floor, and the noise was greatly reduced.

The upper floor of this living room where I am now has a newly developed floor structure.

In fact, an adult male is running on top of me right now.

When I measured the noise once, it was about 38-40db, which is lower than the newly applied noise standard.

Even if you drag a chair at home or drop a golf ball, the sound is up to 10db smaller than the existing apartment.

[Lim Jeong-hoon / DL ENC Smart Eco Team Leader: By adding a rubber cushioning material to the existing Styrofoam performance, we applied a composite cushioning material to improve the inter-floor noise cushioning performance compared to the existing one.]

Most construction companies have already developed technologies to reduce inter-floor noise. there is.

The problem is that these technologies are not being used to build real houses.

Apartment design is usually done by a developer or a reconstruction association, not a construction company, but they have been ignoring this technology because they focused on saving construction costs.

Also, there are loopholes in the construction stage.

Concrete has to be filled on top and bottom of the bumpy Styrofoam, but if the construction is done roughly, the space will be empty again and the noise will increase.

[Gwi-Kyung Jang / Advisory Committee Member of the Inter-Floor Noise Victims: If the construction is wrong, if the construction is wrong, the floor will float or if the frequency is different, it will become a drum.

Even if you spend a little more money, you can greatly reduce the noise between floors if everything from design to construction is done properly

.

(Video coverage: Kim Hak-mo, Kim Tae-hoon, video editing: Park Ki-duk)

----

<Anchor>

Reporter Jo Yoon-ha is here.

[Reporter Yoon-Ha Jo: Even construction experts say that this level of living noise can definitely be improved by design or construction.

In the meantime, let's understand each other a little more, let's yield.

It's a problem that people have to put up with. We've been campaigning like this, but it turned out that it wasn't actually a structural problem.]

[Reporter Yoon-Ha Jo: I was curious, so I asked the construction company, and in the case of the most common exclusive area of ​​85 square meters, if you spend a few million won, it is possible to construct a noise-reducing construction that does not exceed 10 million won.

talk like this

]

[Reporter Yoon-Ha Jo: Actually, it is necessary to incorporate these technologies from the design stage to be able to build according to the blueprint, but the government did not induce such a policy.

So, I've never had a policy like this before.

So, if you introduce this technology from the design stage, you can think of incentives in such a way that the government gives slightly different benefits.

Wouldn't it be better if we clearly indicate what kind of noise prevention technology was used in the sale announcement and display it again in the model house, so people can choose?

Then, even if the sellers are afraid, why not fix this?

There is talk of this.

]

[Reporter Yoon-Ha Jo: No matter how good the design is, it is of no use if you just build it on the spot.

That is why we clearly define responsibilities so that those who supervise, supervise and supervise in the field can fulfill their roles.

Then, after the completion of the inspection, if there is a lot of noise between floors.

standards are not met

If there are places like this, if we make the names of construction companies that have not built them properly transparently, they will be nervous and build them properly.

So, shouldn't the policy direction be revised in the direction that the government will eventually build more houses as quickly as possible, and also consider the comfort of those who will buy some in the future?

This kind of story is coming out of the field.]