Jan 20
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Construction of insulation wall

By | Japanese House

I have been introduced many properties to customers through the real estate brokerage business for over 20 years, but I did not know about “insulation”. However, by doing the wall insulation work by myself, I understood ​​what insulation is. Then, the actual conditions of heat insulation of Japanese houses became clear.

I am ashamed to say that I have not been able to correctly explain such important points to customers and provide real estate property information.

If the apartment is made of reinforced concrete, it will be very cold this winter season if it is not insulated. On the other hand, in summer, the room gets hot like a burning hell. Therefore, the air conditioner is fully rotated to adjust the room temperature. Even if you operate the air conditioner, the sensible temperature in winter changes greatly depending on the presence or absence of heat insulation.

If you do DIY construction on your house, I think that you will install insulation nearly 100% of the time. If you ask a contractor to do insulation work, it will be expensive, so if you rent a house you own to another person or sell it for sale, you will not do insulation work. Insulation construction is a tedious task for a contractor, and for rental apartment owners, the insulation work is simplified because they want to keep construction costs down.

First, studs are erected on the wall to make the wall vertical and flat. The studs are filled with foamed styrofoam or kanelite foam to a thickness of 15 mm to prevent condensation. These insulations are pressed against the concrete wall to secure it, without creating any gaps in the concrete wall. Completely cover the concrete wall with airtight tape to keep air out of the wall.

Then fill it with 50mm glass wool. In this way, I don’t think anyone has done the heat insulation construction of Styrofoam + glass wool, but I think it is a very effective construction method to prevent dew condensation.

The walls are completely airtight to prevent humid air from entering. I think this will prevent condensation even with glass wool.

Cover the glass wool with a moisture-proof sheet and secure it to the surface of the studs with an air tacker. Stick a soundproof sheet on top of it, and then screw the gypsum board onto it.

It seems that many construction shops do not want to do glass wool because it is vulnerable to condensation, but I think that it is a very good heat insulating material if it is installed correctly.

A solid insulation wall has been created.

Jan 18
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The reality of Japanese architectural construction

By | Japanese House

Today, January 17th, is 26 years after the Great Hanshin-Awaji Earthquake, January 17, 1995. I also experienced this big earthquake at my home in Osaka. This quake was the biggest quake in my life.

On January 17th of this earthquake, a concrete pillar on the Hanshin Expressway broke and rolled over.

I recently noticed when I was doing skeleton remodeling work on a Japanese apartment. It is the fact that various things that are completely unrelated to concrete are mixed in concrete. I discovered Styrofoam.

This fact is not often pointed out, I think that the reason why the concrete pillar of the Hanshin Expressway broke was that something other than concrete was mixed in the concrete.

There is a lot of “garbage” in the concrete of Japanese apartments and public buildings.

Then, the reason why “garbage” is contained in concrete is to reduce the amount of concrete. In other words, to reduce the cost of construction.

It is unlikely that Japanese ordinary person like me does DIY concrete work. As a result, such information is not known to the general public. In the case of apartments, the concrete part is not seen by the consumer. Moreover, I don’t think there are any general consumers who cut concrete and look inside the concrete.

Japanese housing is undergoing a great deal of shoddy construction work where the general consumer cannot see it. In this blog, based on my actual experience at my own site, I will clarify the reality of how Japanese housing is constructed, what materials are used, what problems there are.

Jan 02
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Customer’s “amulet”

By | Real Estate

Our customers have forgotten their “amulets” and returned to his home country, so we have considered an appropriate disposal method for “amulets”.

 

First of all, for the first six months, we offered our customers’ amulets to the Kamidana in our Dios head office in Nakanoshima Osaka.

On New Year’s Day, January 1, 2021, we visited Shitennoji Temple in Osaka for the practice of visiting a temple at the beginning of the New Year. Therefore, we prayed for the patronage of our customers in the temple, and at the same time, we put all of our customers’ amulets in the disposal box of the amulets at Shitennoji Temple.

Shitennoji is the first temple in Japan where Buddhism was introduced 1400 years ago. We participated in the monthly zazen meditation at this temple from 5 am. At this venerable Buddhist temple in Japan, we have properly disposed of our customers’ amulets.

On the same day, Dios bought a new “amulet” at Shitennoji Temple. This “amulet” is (1) the good relation with a Buddha and (2) the relation with a person. We love this new amulet very much. We will continue to raise it to our Kamidana of our Dios head office.

Dec 16
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How to build a new internet connection to your home

By | Electric Appliance

To install a new internet in your home, first select an internet service provider, complete the procedure, and then set up your machine. This sequence of tasks is more complicated than you might think, and can be confusing if you don’t see the steps very accurately. The person who manages the procedure must have all the information.

Yodobashi Camera has a counter called “Consultation anything about the Internet”. Other consumer electronics retailers have similar consultation desks. It is recommended that the contractor himself or herself go there. If you are a foreigner, please go to this consultation desk with an interpreter who understands Japanese. Since “identity verification” is required for the contract procedure for the Internet, the contractor must bring his / her identification card and go directly to the consultation desk.

In the case of NTT FLET’S Hikari, you can make a contract by telephone. However, if you want to compare the price with other internet service providers, you need to go to the internet consultation desk of the electronics retail store.

(1) NTT FLET’S Hikari

(2) au Hikari

(3) eo Hikari

(4) J.com

(5) Softbank

(6) docomo

(7) UQ WiMAX

(8) Y! mobile

Select from these (1) to (8) Internet service providers.

If the line is not laid in the house, NTT FLET’S Hikari will pull the line from the utility pole on the road, so it is unlikely that NTT FLET’S Hikari cannot be connected. However, NTT FLET’S Hikari is more expensive than other Internet carriers.

Softbank Hikari, docomo Hikari, and Biglobe Hikari use NTT’s internet connection. However, it is a little cheaper than NTT FLET’S Hikari.

“Au Hikari” tends to be strong in apartments, and “eo Hikari” tends to be strong in detached houses.

Also, if the mobile phone company you already have is au, Softbak, or docomo, if you sign up for a residential internet connection with the same company, you will get a package contract, and the monthly payment will be about 500 to 1,000 yen cheaper.

In order to complete the contract procedure at the “Internet consultation desk” such as Yodobashi Camera, you must exchange a lot of documents such as explanations of important matters. The contractor and the interpreter must be present at the contract procedure during that time. The paperwork can sometimes take several hours.

Also, if the documents are incomplete, you will have to go to the counter again, which is a little annoying. Therefore, please proceed with the procedure accurately, confirming and reconfirming, and carefully.

As for the wireless router, a mesh router is recommended to send the Internet radio waves over a wide area in a large house. One way is to install a relay machine. Consumer electronics retailers such as Yodobashi have the latest models, and there are various models from expensive to inexpensive.

First of all, please go to the “Internet consultation” counter of home electronics retailers such as Yodobashi.