I would like to think about a full-scale remodeling that will increase in the future, not just a remodeling of makeup.
The house 30 years after construction,
Remodeling such a house, you will be able to live a good life another 20 years and 30 years.
Such a house is I think it’s a Japanese wooden house, a house with a conventional frame construction method.
Of course, if it is a traditional construction method such as a private house, It can be 50 or 60 years to live a good life.
Since it was about 30 years ago that the heat insulation and airtightness of Japanese houses began in earnest, many of the buildings before that were full of drafts.
The image seems to be bad when you hear the word draft, but from the standpoint of whether it is suitable for remodeling, I can feel very relieved. It would not have been comfortable to live in due to the cold weather, but since the foundation, pillars and interior were exposed to ” the flowing air” of drafts, there is a high possibility that it is not rotten.
In addition, many of the old buildings have a solid structure because the carpenter still knew the traditional construction method.
However, many of the foundations around this time do not have reinforcing bars in the concrete, so it is necessary to tie with the foundations that have reinforcing bars or to reinforce the foundations with carbon fiber sheets.
Currently, seismic diagnosis is becoming more common, and home remodeling is being carried out on the premise of various seismic reinforcement, but there are the same pitfalls of building a new house.
Today’s new houses emphasize high heat insulation, high airtightness, and earthquake resistance. It’s great in itself, but the “moisture” is left behind. Or it is done by the superficial technology.
In that case, of course, the remodeling will be vulnerable to moisture. There is an increased risk of damage to people’s lives due to rot and humidity in the not too distant future.
If you want to make a full-scale renovation for living for 20 to 30 years, make sure that the structural materials such as the foundation, pillars, and beams “touch the flowing air”.
Make the room well ventilated
And make the house highly heat-insulated, highly airtight, and earthquake-resistant.
It’s easy for a Japanese wooden house.
The most necessary factor for energy saving and earthquake countermeasures is to be resistant to “humidity”.
And let’s take a look at the outline of the remodeling that contributes to the health of the residents and makes the home comfortable while maintaining its performance.
Reinforcement of foundation concrete and earthquake resistance is commonplace.
First, the entire building is externally insulated. That is, it is applied to the roof surface, wall surface, and foundation surface.
By using external insulation,
Structural materials such as foundations, columns, and beams can be “touched by the flowing air.”
This is because the wooden structure can be adjusted so that air flows through the underfloor space, all the wall cavities, the space on the first and second floors, and the space in the cabin. The entire space through which this air flows is called the “Internal space of structural”.
The air flowing through the “Internal space of structural” protects the wood which is a structural material from moisture, and keeps the wood from decaying bacteria and prolongs the life of the wood.
Condensation on seismic hardware can also be prevented by the external insulation and flowing air, and the hardware effect can be maintained for a long period of time.
Furthermore, the fact that air flows into the “Internal space of structural” means that when viewed from the indoor side, air is flowing around the rooms that is, under the floor, behind all the walls surrounding the room, and above the ceiling.
This allows the temperature of the surfaces surrounding all rooms to be nearly uniform.
It creates a truly healthy and comfortable environment by controlling the indoor environment through the floor, walls and ceiling.
There are two ways to control the temperature and humidity of the “Internal space of structural”: a passive method that uses natural energy and a hybrid method that uses an air conditioner.
They are called PAC (passive air cycle) and HAC (hybrid air cycle), respectively.
Another important thing is to use so-called breathable materials for the floor, wall, and ceiling base materials and finishing materials, which have a humidity control function that can regulate the humidity.
It absorbs and retains the humidity when it is humid, and releases it when it dries to stabilize the humidity in the indoor space.
By controlling the humidity in the “Internal space of structural “the humidity in the room can also be controlled indirectly.
The rest is the floor plan.
If the floor plan is full of private rooms, the wind will not pass and the sunlight will be blocked. Moreover, the family also falls apart in everyday life.
If you want to do a full-scale remodeling, you can remove unnecessary walls and make it a large space.
Structural reinforcement can be, for example, a gate-shaped frame or a box-shaped frame, and these frames can be used to reinforce the large windows often found in old houses.
It can be strengthened to the same level as a bearing wall.
A spacious and comfortable space can be created by incorporating useless rooms that are no longer used.