Housing Loan for Kyo-Machiya House "Nokosou Kyo-Machiya
The interest rate of the mortgage loan is 1.8% lower than the standard interest rate of the mortgage loan (variable or fixed) for "Nokosou Kyo-Machiya".
The "ECO Preferential Service" cannot be used in conjunction with the "Nokosou Kyo-Machiya" mortgage.
Purpose for Loan Use
Funds for the purchase and renovation of a machiya (traditional Japanese townhouse) in which the applicant will live.
*In principle, the applicant is required to submit the "Kyomachiya Chart" issued by the Kyoto City Center for Landscape and Urban Development (If the applicant has not obtained the "Kyomachiya Chart", the applicant is required to submit the "Kyomachiya Profile").
*We will check the original copy of the "Kyomachiya Chart" and "Kyomachiya Profile" and ask you to submit a copy.
※ 原則、「公益財団法人 京都市景観・まちづくりセンター」が発行する「京町家カルテ」のご提出が必要となります（「京町家カルテ」を取得されていない場合は、「京町家プロフィール」をご提出いただきます）。
Funds for the construction and purchase of a new "Heisei no Kyo-Machiya" (Kyoto machiya) to be lived in by the applicant.
*The original copy of the "Heisei no Kyo-Machiya Certification Notice" will be checked and a copy will be required. (The original copy of the "Heisei no Kyo-Machiya Certification Notice" will be checked and a copy will be submitted.)
Who Can Use This Loan? ご利用いただける方
-Those who live or work in the Bank's business area.
-Between the ages of 25 and 65 at the time of application, and under the age of 80 at the time of final repayment.
-Those who can expect stable income.
-Those who can receive a guarantee from a guarantee company designated by the Bank
-Those who can take out the group credit life insurance specified by the Bank.
-Those who meet the loan criteria specified by the Bank
Loan Summary Description (PDF: 290KB) *in Japanese
Features, Advantages & Disadvantages of Building Structure
Then, following yesterday, we will explain the structure of the building. Below is a list of the features of each structure and their advantages and disadvantages.
Advantages of W-Structure/Wooden construction
The most notable advantage of wooden properties is that they are cheap.
Construction costs for wooden properties are kept low, and they are built in a short construction period. Therefore, it is possible to construct high quality objects at low cost. It is a big advantage that the rent is often comparatively cheap compared to other structures. The advantage of wooden construction is that it is suitable for the climate of Japan. Trees have the effect of keeping moisture by releasing stored moisture into the air during winter when the air in the room is dry. It absorbs moisture in the air during the high humidity season such as the rainy season.
In addition, it has excellent breathability, so it matches the climate of Japan with four seasons and high humidity.
Disadvantages of W-Structure/Wooden construction
It is a pity that the wooden structure has the best air permeability, but the sound insulation is the lowest among all the structures. In many cases, the walls separating the rooms are thin.
The point that air conditioning is difficult to work is that it is easy to complain when living in a wooden property. Compared to steel frames, wooden properties are less airtight because they are less airtight than steel frames. If air conditioning is not effective, utility costs may increase.
Also, the wooden structure has low fire resistance. Due to the characteristics of wooden construction, a building fire will set fire quickly. However, there is also the aspect that "even if the surface is scorched, it will take some time to burn to the inside," and this does not mean that the entire apartment will collapse immediately if a fire occurs.
Advantages of RC-Structure/Reinforced concrete construction
Since the main material, concrete, is a non-combustible material, it has extremely high fire resistance. As a base for daily life, living in a room with excellent fire resistance will give you peace of mind. It also has a high durability because it has both compressive force and attractive force. There are many properties that can withstand an earthquake. Basically, the heavier the material, the higher the sound insulation capacity, so it is easy to imagine that concrete with an overwhelming weight has high sound insulation. Especially for those who want to put 5.1ch surround speakers in the room because they block the bass sound well, let's live in RC without hesitation. Due to the characteristics of pouring concrete, there is a high degree of freedom in shape, and there are also many design variations. This is because there is a high degree of freedom in design and you can live in a modern property.
Disadvantages of RC-Structure/Reinforced concrete construction
The bottleneck is that not only construction costs but also dismantling costs are high. In the case of rent, high rent is a disadvantage of RC construction. The rent is often set higher than the wooden and S structures.
Compared to the SRC structure described later, it is slightly weaker to shake because it does not contain steel frames. But you don't have to worry about the earthquake as much as the wooden and S structures.
Advantages of SRC-Structure/Reinforced steel frame concrete construction
SRC construction has the best earthquake resistance and fire resistance of all structures. It boasts top class fire resistance and durability. The weaknesses of S-Structure, which are "weak against heat" and "prone to rust", are overcome by wrapping it in concrete, and the weakness against shaking is covered with reinforcing bars and steel frames. It is also superior in strength and earthquake resistance compared to RC construction. Therefore, it is often used for construction of high-rise or super high-rise apartments with 10 or more stories. High seismic resistance can be secured even if the size of columns and beams is small
Disadvantages of SRC-Structure/Reinforced steel frame concrete construction
Construction costs are the highest and rent is the highest in the property structure. Although there is a sense of security against fires and earthquakes, delivery times are longer, construction costs are higher, and rent is more expensive than other construction structures.
Summary: Recommended property structure changes depending on what you emphasize
If you want to reduce the construction cost or if you want to use the traditional construction method, you can use W-Structure or S-Structure.
RC-Structure or SRC-Structure if emphasis is placed on earthquake resistance and fire resistance
You can't miss the function of the house. In terms of strength and durability as well as earthquake resistance and fire resistance, RC-Structure and SRC-Structure will be favored. In the past, it was generally recognized that seismic resistance was “SRC-Structure>RC-Structure”, but in recent years when technological progress has been remarkable, there is almost no difference for newly built properties.
RC-Structure and SRC-Structure are also advantageous for sound insulation. However, it is necessary to pay attention to the boundary wall.
Since concrete is cast into the RC and SRC structures, sound and vibration are less prone to sound insulation. However, similar to the above earthquake resistance, the functional difference between the two is not large.
So what should we look for in the property overview if we want to be particular about soundproofing? It will be the material and thickness of the wall.
Even if the building itself is made of RC or SRC-Structure, if the wall with the next room is thin, you can expect only a soundproofing effect. The wall between the dwellings is called a party wall, and its thickness and material greatly affect sound insulation. The condominium party wall is around 180 mm to 250 mm. With a thickness of around 200 mm, you can expect the same soundproofing effect as a condominium. It also depends on whether the wall material is only concrete blocks. For a simple way to check, please knock on the wall when you check the property by looking inside. Although it can not be said unequivocally, when it is made of concrete, it generally feels as if it is packed with contents. On the other hand, if it is hollow and separated only by plasterboard, there will be a loud sound. This will give you a good idea.
Choose a property with no regrets
Property structure with advantages and disadvantages. What matters is where you prioritize. You don't want to compromise because it's your new home. When you look at a new property from now on, let's look not only at the inside and the appearance, but also at the invisible structure.
Change the wallpaper of the apartment. We will explain the three points to check and the cost.
There may be times when you want to change the wallpaper of an apartment you purchased, when the stains start to stand out or you want to refresh your mood. At that time, do you wonder if "Is it okay to change the wallpaper of the apartment?" As a premise, in the case of a rental property, there is an obligation to restore the original condition, so basically the wallpaper cannot be replaced. In this article, if you want to change the wallpaper of the purchased property, we will tell you the estimated cost of changing the wallpaper and the DIY method.
Three points to check before changing the wallpaper of the apartment
Apply to management association
The Ministry of Land, Infrastructure, Transport and Tourism has established a standard called "standard management rules", and many condominiums throughout Japan have the same or similar standards as the standard management rules. The standard management rules stipulate that "when attempting repairs or remodeling, owner must first apply to the president of the management association and obtain written approval." Actually, it depends on the rules of each condominium, but in most cases, when the resident changes the wallpaper, owner must apply to the management association in advance and obtain approval. You don't have to be overly rigorous, even if you need approval, because it doesn't go through such a rigorous review. If the application is approved, you can freely change the wallpaper within the approved range, so be sure to apply without ignoring the rules.
Know the structure of an apartment
If the condominium structure is reinforced concrete, wallpaper may be attached directly to the concrete surface. In this case, you cannot attach the wallpaper neatly unless you choose a wallpaper that can be attached directly to concrete. In particular, if the wallpaper is laminated and has an antifouling effect, it will be difficult to stick it in a flat state. Choose a wallpaper that suits the structure of your condominium, and be careful not to create a different finish than the image.
Know the type of wallpaper
The wallpaper used in the condominium is mainly divided into two types: mass production cloth and general cloth. We will introduce each feature together with the materials used.
Mass production cloth
Industrial cloth is a mass-produced cloth that often has a simple design, but the advantage is that it is cheap and available. Since the wallpaper is of high quality and has both durability and mildew resistance, it is used in many rental houses and houses for sale. Various manufacturers are producing, but the format has not changed significantly. Instead of having no special personality, it is a wallpaper produced with the concept of suppressing costs and supplying standard wallpapers.
General cloth (1000 series cloth)
General cloth is a cloth sold by wallpaper makers, and it is a wallpaper that mainly uses vinyl cloth such as vinyl chloride resin. Although it is more expensive than mass-produced cloth, it has the advantage that it has abundant colors and designs, so it is easy to prevent stains, and there is also wallpaper that has the function of absorbing moisture. This is a wallpaper that each manufacturer puts effort into producing, and they are renewing and selling a pattern with a volume that is several times the volume of mass production cloth. Therefore, it will be expensive, but you can find unique wallpapers, and you can search from many samples, from calm designs to designs that please children.
Breakdown of costs for changing wallpaper in the apartment
When changing the wallpaper of a condominium, both the material cost of the wallpaper itself and the cost of the construction to attach it will be required. The fee varies depending on the material of the wallpaper, the size of the room, and the details of the construction work, so check the price quotes for each item.
As we mentioned earlier, usually either the mass production cloth or the general cloth is used for the wallpaper of the apartment. It is worth considering that the cost price per 1 sqm is 800 to 1,000 yen for mass production cloth and 1,000 to 1,500 yen for general cloth. Assuming the size of a typical room, let's take a look at the market price of wallpaper material costs.
In the case of a general cloth, there is a difference of about 500 yen per ㎡ between the cheap price and the high price, so the larger the room, the more different the price. Also, if you select a "luxury cloth" that exceeds the performance and design of ordinary cloth, the price will be even higher.
Cost for replacement work
The re-covering work includes construction costs, curing costs, groundwork processing costs, and disposal costs for old wallpaper. Depending on the construction company, the wallpaper fee may include the construction fee, so check in advance whether the construction fee is required separately. When the construction cost is separate, if the above work is enough, the price of the cost is about 20,000 to 50,000 yen. However, if you move a large piece of furniture, such as a piano, or need special curing, you will generally be charged an additional fee.
Is it possible to do a DIY wallpaper replacement?
It's possible to change the wallpaper in DIY, but you'll need to procure the wallpaper yourself, and you'll need to buy glue, a cutter, and a resin roller to make it flat. All of these items are sold as a set, so it's convenient to purchase at a home improvement store or interior shop. DIY costs include the cost of adhesives, in addition to the cost of wallpaper sold at the store. In the case of a room of about 8 tatami mats, if you choose a cheap wallpaper, you will be able to refill from about 20,000 yen to 30,000 yen. It's a good idea to try DIY if it's a small room or make an accent wall, as it can save you money. However, if you don't want to fail in a wide range of construction work, it is safer to ask a construction company that seams will not stand out and there will be no problems with bubbles or deviations.
Even if you purchase a condominium, it is generally not allowed by the rules to change the wallpaper without permission, so be sure to apply to the management association and obtain approval before changing the wallpaper. The market price for refilling varies depending on whether it is a mass production cloth or a general cloth, and if you ask the construction company, the wallpaper fee may include the construction cost.
The wallpaper affects daily life, so it depends on the area to be replaced, but it is safer to ask a reliable construction company than DIY.
How much does it cost to renovate the bathroom? I will explain the types and points when renovating.
The bathroom, which always wants to be kept clean, is a place where many people consider remodeling after long-term use, where stains and scratches such as mold become noticeable. Therefore, this time, we will explain in detail the types of bathroom remodeling and the points to be aware of in addition to the cost of remodeling.
What is the right timing for bathroom renovation?
The life of the bathroom is said to be about 20 years, and if you continue to use it for longer than that, invisible areas will deteriorate and corrode, and it will cost money for subsequent maintenance. The life depends on the frequency of use and usage, so check the points below, and if there are many points that apply, consider seriously reforming.
- Over 20 years old
- I haven't done any maintenance
- There is a crack or rust in the bathroom
- It became difficult to change from water to hot water
- There is a stain on the wall of the dressing room
- The floor of the dressing room sinks
There are two major types of bathroom remodeling.
When renovating a bathroom, there are two main types of basic work to choose from. Let's take a closer look at each one below.
Modular bath is a remodeling method that brings ready-made products made by each manufacturer into the bathroom and installs them. The advantages are that it uses a finished product, so the construction period is short, it is finished for easy maintenance, and it has excellent airtightness and heat insulation. The disadvantage is that the design is limited because it cannot be designed to fit the size of the bathroom. If the bathroom has a special shape, you may not be able to find a modular bath that fits the size, and you have to give up construction.
Conventional Construction Method
The conventional method is to make custom-made parts such as bathtubs, walls, floors, and faucet fittings, and then remodel them according to each household. From function to design, you get what you want, so you get the ideal bathroom. Even if the bathroom has a special shape, in addition to being able to perform construction, it will be finished in a design that will not cause discomfort when eliminating barriers and making it barrier-free. However, in the case of condominiums, it may not be possible due to space issues and permission from the management association. In addition, since designing, producing parts, and assembling are custom, the disadvantage is that the cost is higher than that of the modular bath.
Bathroom renovation costs
Check the market price to see how much it costs to renovate a bathroom. First of all, we have summarized the price quotes for the basic construction work in the table.
If you choose a conventional method instead of a modular bath, you will often need to pay an additional fee of about 500,000 yen. In addition, if you want to select a high-grade product for modular bath, move or expand the bathroom, insulate work, or proceed with termite countermeasures at the same time, an additional fee will be charged. In addition, the actual cost and construction period will vary greatly depending on the size of the bathroom and the building materials used, so please see the above as a reference only.
Points for renovating the bathroom
There are two types of remodeling, modular bath and conventional method, but both have many designs and plans with functions. From here, we will explain what kind of points you can pay attention to when choosing, so that you can complete an ideal bathroom.
Determine the bathroom by looking at the real thing in the showroom
The atmosphere is difficult to convey only with the catalog, and when you actually finish the construction, you may feel that the result is different from what you imagined. Companies that do bathroom remodeling often have showrooms and show real things, so let's visit and check the real thing with your own eyes. In particular, the bathtub can be viewed not only in the immediate vicinity, but you can also touch it, so you can check information that is not slippery, has a high-class feel, etc. If you enter the bathtub, you can also check whether you can stretch your legs, so it is recommended that the whole family visit.
When adding options, think about whether it is a really necessary function
There are many new features added to the bathroom each year, but the latest features don't necessarily mean you need them. Let's choose whether it is convenient, if there is an opportunity to use it even if it is equipped, or if it is really necessary.
It is said that bathrooms generally reach the end of their life in about 20 years, and when remodeling, it begins with choosing a modular bath or a conventional construction method. The key to remodeling is to visit the showroom, see the real thing, and carefully consider whether the option is the function you really need before purchasing.
Please contact us for an introduction of a construction company or an architect who can speak English.
How much does a kitchen reform cost? We will explain the case that the cost is high and the points when reforming.
The kitchen that you stand on a daily basis is a place where the oldness, stains, and damage of the equipment are particularly noticeable, so many people may want to consider remodeling. Therefore, this time, we will introduce the cost of kitchen remodeling and the cases where the cost is high, and explain the points when remodeling.
Market price of kitchen renovation
The cost of renovation in the kitchen is often around 1 to 1.3 million yen, and it may seem a little expensive for renovation in a limited area. The price range depends on the style of kitchen, the grade and the content of the options, and choosing a modular kitchen can be expensive. Remodeling into the popular island kitchen may require a budget of more than 1.5 million yen due to the huge scale of construction work. Even if you choose something other than an island kitchen, the cost will generally be higher if you need to repaint the wallpaper or flooring.
There are various types in the kitchen
When remodeling the kitchen, decide what kind of kitchen it should be, taking into consideration the wishes of yourself and your family. There are so many types of kitchens, so let's start with the features of each.
Classification by installation method
The installation method is mainly divided into open type and wall-mounted type. The features of both are summarized in the table below.
Classification by style
The shape of the kitchen can be divided into 6 types: type I, type II, type L, type U, island type, and peninsula type. Again, let's look at the characteristics of each in the table.
What makes a kitchen remodeling expensive?
The cost of kitchen renovation depends largely on the environment around the kitchen. From here, we will explain the case where the renovation cost becomes high with a specific example.
When moving from place to place
The renovation cost will be higher if you move the location of the kitchen itself, such as when changing the kitchen attached to the wall to a open type. This is because additional work such as drainage pipes, exhaust ducts, and electrical wiring is required, so it may not be feasible for condominiums with limited work.
When the kitchen area is severely damaged
When renovating the kitchen, the parts that were previously hidden are often exposed, and if this part is damaged, repair work is required. Since you will remodel it into a new kitchen, few people use it while the walls are dirty, and repair costs may be incurred in addition to the prior estimate.
When remodeling to a small kitchen
If you want to remodel the kitchen smaller than you used to, you need to fill the holes and rewall the wallpaper after removing the kitchen. Even in such cases, in addition to the originally required renovation costs, expenses may be expensive and unexpected costs may be incurred.
Points for renovating the kitchen to be easy to use
The kitchen is not good because the equipment is expensive, but the ease of use depends on the size and shape of the room and the taste of the user. In order to make a kitchen that you can enjoy using, you should focus on the following two points.
Arrange the cooking flow
When designing the kitchen, it is important to place it in an easy-to-use place, keeping in mind the flow of the process of taking out food from the refrigerator and cooking it. It's inconvenient if the fridge is too far away from the cooking area, and you don't have to have a large kitchen if you have a few things to put in the kitchen.
Make the height of the counter and the width of the aisle suitable for you
It is said that the ideal height for the counter is "height ÷ 2 + 5 cm", so let's order the height according to it. If the height of people who mainly use the kitchen is 160 cm, a counter height of about 85 cm is ideal.
If the width of the aisle is about 80 to 90 cm when used by one person, there is a margin, but this also varies depending on individual differences such as physique. If there are many occasions when the kitchen is used by multiple people, or if you want to reduce the pressure when opening the storage, expand the aisle width to about 110 cm to make the kitchen easier to use.
The cost of remodeling the kitchen is generally about 1 to 1.3 million yen, but when changing to an OPEN type kitchen, additional wiring work and repair work are required, and the cost tends to be high. However, the shape and size of an easy-to-use kitchen vary depending on the purpose of the kitchen, the physique of the people who mainly use it, and the number of people. After organizing your own home ideals, ask an experienced remodeling company to make your kitchen easy to use.
Even if you change a part of the room by remodeling, it will improve the usability of the room you usually spend and make your daily life comfortable. However, when performing remodeling, it is important to have a clear purpose, not a rough image of "easy to use" or "comfort". To that end, this time we will introduce what you need to know before remodeling an apartment and examples of room remodeling.
Things to Know when Remodeling an Apartment Room
Difference from Renovation
The word "renovation" is similar to "remodeling". Remodeling means repairing to bring it closer to the state when it was newly built, and is often used in a wide range of construction work. On the other hand, renovation refers to construction work that matches the current lifestyle, with the purpose of adding new added value to what is already there. However, in some cases, the two may be used interchangeably, or remodeling may be termed as a minor repair and renovation as a major repair.
Confirm in Advance whether the Desired Remodeling can be done.
If the house is a structure that supports pillars and pillars in combination, there are many cases where relatively free remodeling such as removal of walls can be performed. However, in the case of a structure in which the walls are combined and supported by the surface, the walls support the house, so there are restrictions on the walls that can be removed. Especially in a condominium, what kind of remodeling can be done depends not only on your own room but also on the structure of the whole condominium. Therefore, before start remodeling, please check whether you can do the construction you want in advance.
Check the rules when remodeling an apartment
Condominiums have management rules, and even if they are proprietary parts, they generally have rules regarding remodeling. Depending on the content, it is required not only to obtain approval from the owner and the management association but also to obtain the consent of the residents on the upper and lower floors before carrying out the works. Please check the terms and conditions of the condominium and comply with the restrictions regarding renovation, reform and remodeling works. It is often the case that apartments can be remodeled only in the private areas such as rooms. Please note that entrance doors and balconies are common areas and cannot be remodeled in principle.
Let's imagine the cost required to remodel the room
When remodeling a room, it is also important to check the management agreement and the construction structure of the condominium, but it is probably the cost part that is worrisome. No matter how much you would like to make a remodel, if you can't afford it, it won't come true. By grasping the rough cost, it will be one of the materials for studying the contents of reform.
Here, we will introduce the market price as a guide, how much it costs to remodel the room.
<Remodeling of living room/room>
200,000 yen to 2 million yen for living room
100,000 yen to 1 million yen for storage
500,000 yen to 1 million yen for Japanese-style room
100,000 yen to 1 million yen for Bedroom
Make your room more comfortable, example of Condominium Remodeling
What kind of remodeling should be done to make the present room more comfortable? Next, we would like to introduce an example of an apartment remodeling.
Expand your space by eliminating rooms and corridors
Many people want a spacious space for places where the family spends a long time, such as the living room. You can expand the room by removing the walls that separate the living room, such as the corridor and living room. In some cases, if there is a room that is not used much, the wall of the room adjacent to that room is removed and the room is expanded by one room.
Change the flooring material to make a Japanese-style room a Western-style
It is a common case that one of the rooms is a Japanese-style room, but there are people who do not use it much when they actually live. If you prefer a Western-style room, you can replace the tatami mat in a Japanese-style room with a wooden floor and arrange it in a Western-style room. If you have the courage to change it, you can use a flooring mat that can be arranged on the flooring just by spreading it.
Replace wallpaper and ceiling cloth
If you want to change the taste of the entire room, try changing the wallpaper or the cloth on the ceiling. The walls and ceilings are large and easy to see, so a slight change in color or pattern can greatly change the impression of a room. Also, when choosing a wallpaper, pay attention to not only the design of the wallpaper but also the function of the color. For example, a light color such as white or beige makes it easy to match with any interior, making it easier to see the entire room, but dark colors create a chic atmosphere, and depending on the arrangement of furniture, it may happen that the entire room may look narrow.
Install underfloor heating
In winter, etc., it is often the case that the floor feels cold, and it may not be possible to warm up with just the air conditioner. If you feel a strong cold, you may consider floor heating. There are two types of floor heating: "hot water type" and "electric type". The hot water type is suitable for a wide range and when it is used for a long time, and the installation cost is higher than the electric type, but running cost is low. On the other hand, the electric type is suitable for narrow spaces such as the feet of the kitchen where the usage time is short. The installation cost is lower than the hot water type, but the running cost tends to be slightly higher. The construction cost will vary depending on the location and range of construction, as well as the type of floor heating, so let's get a quote first and consider it.
Next time, we will explain a little more detailed remodeling of condominiums, detached houses, and renovation of machiya house. Thank you and best regards,
What are the thermal insulation and soundproofing effects of the double window sash?
In order to improve the heat insulation of the house, it is effective to increase the heat insulation of the windows that occupy a large area of the wall. One way to improve the heat insulation of windows is to install a double window sash. Therefore, we will explain what double window sashes are and what is different from double glazing that is easily confused, and then explain the heat insulation and soundproofing effects of double sashes.
What is Double Window Sash?
Double window sash has two sashes, one is an outer window and the other is an inner window, and is also called a double window. Double window sash is easily confused with double glazing (paired glass), but double glazing is a window in which two glasses are fitted in one sash.
There are cases where double window sash is installed from the beginning when newly built, but it is also possible to install an inner window inside the window frame by remodeling to make a double window.
Only the proprietary part can be freely remodeled in a condominium, but since the inner window is installed inside the room, it can be installed without problems. However, when making double window sash by remodeling, if the depth of the window frame is insufficient, it is also necessary to install the extended frame. In addition, double window sash is basically installed on the sliding window, so it cannot be installed on the raising and lowering windows.
The double window sash has a heat insulation effect and is also effective in preventing condensation
Even if the walls are heat-insulated, if the window occupying most of the wall area is a piece of glass, it is still easily affected by the outside temperature. Through the windows, hot summer sunlight and winter chill may be transmitted to the room. The double window sash is characterized by the fact that an air layer is created between the sashes, making it difficult for the outside temperature to be transmitted. If you install a double sash, you can live in a summer and winter more easily than with a single sash. Condensation occurs when warm air in the room comes into contact with the cold window glass, so a double window sash makes it difficult for the window to cool down and also prevents condensation. If you want to improve the heat insulation, you can replace the glass with double glazing in which air is trapped in the hollow layer between the two glasses, but it is better to install an inner window to make a double sash for higher effect. Also, the heat insulation effect of the double window sash changes depending on the glass and sash used. The heat insulation effect is higher when using a double window sash with double glazing than when using single glass. Among them, Low-E double glazing coats the glass on the indoor side with a special metal film to make it easier to capture the sunlight and prevent warm air from escaping. Regarding the sash itself, the resin sash, which does not conduct heat easily, has a higher heat insulating property than that of a general metal material. Please consider airtightness too when selecting.
The double window sash also has a soundproof effect
The air layer created by the double window sash has the function of blocking sound, which is also useful for sound insulation. Noise can be categorized into two types: air-borne sound that is transmitted by the vibration of air and building-borne sound that is transmitted from building walls, floors, and ceilings. Of these, air-borne sound can be mitigated by using a double sash. For example, if you are worried about the sound of cars and trains passing by in a house near a road or railroad, or if you are struggling with the barking of dogs in your neighborhood, you can expect a sound reduction by installing a double sash. Alternatively, the double window sash is effective as a sound leakage countermeasure for stereo sound at home.
Let's consider double window sash with consideration of disadvantages
A double window sash can be expected to have a heat insulating effect and a soundproofing effect, but it also has a disadvantage. The double window sash will open and close two windows when opening the windows. You may find it awkward to open two windows each time when you ventilate or move in and out. Also, installing the sash inside may create a feeling of pressure. Especially when the extended frame is attached by remodeling, it may protrude more than the window frame so far, so you may feel the room is narrow. A sash with a color that naturally blends with the interior of the room tends to give a clean impression, so it's a good idea to select it while giving consideration to its appearance. The double window sash reduces the heat in the summer and the cold in the winter, which makes it easier to spend comfortably and can be expected to have a soundproof effect. If you find it difficult to live due to indoor temperature and sound issues, consider using a double sash while considering the disadvantages.
・Double window sashes have two sashes installed in one window.
・Because there is an air layer between the sashes, heat and sound are less likely to be transmitted, and there is a heat insulating effect, the prevention of condensation, and a soundproof effect
・The heat insulation of the double window sash changes depending on the material of the sash and the type of glass.
・The double window sash has the disadvantage that it requires opening two windows and may create a feeling of pressure.
We also accept introductions and consultations of partner contractors. When renovating the room, please consider the above options and have a comfortable life.
What is the difference between Earthquake Resistant and Seismic Control and What are the Reinforcement Costs?
In order to have a safe housing in Japan, which is an earthquake-prone country, it is necessary to adopt a structure that can withstand a large earthquake that can occur at any time. This time, we will explain the differences between the structures of seismic isolation, earthquake resistance, and seismic control, and the features of each. Also, please refer to the cost of earthquake-proof reinforcement.
■What is the difference between Seismic Isolation, Earthquake Resistance, and Seismic Control?
Earthquakes are the most vigilant risk in Japan to attack homes. Research on construction methods that can withstand earthquakes has been carried out for a long time, but the mainstream in recent years is either seismic isolation, seismic resistance, or seismic control. First of all, let's know the characteristics of each and sort out the differences.
Seismic Isolation: Absorbs Shaking
Seismic isolation is a structure designed to absorb vibrations and prevent damage from being directly transmitted to buildings when an earthquake occurs. A special device is installed between the foundation and the building, which absorbs the shaking, so that you do not feel too much shaking. In addition to general earthquakes up to a seismic intensity of around 3, when a large earthquake with a seismic intensity of 5 to 7 class occurs, the shaking does not reach the core of the building, reducing the risk of damage.Originally the structure of the Machiya was the vibration absorbing structure, where the pillars were built on stones set up on the ground, and without the use of nails, the bending of the tree disperses the power of the earthquake.
Earthquake Resistance: Withstands Shaking
In the event of an earthquake, a structure with enough power to prevent buildings from collapsing is earthquake-resistant. By constructing the building from the foundation solidly, even if a large amount of energy is applied to the building, it will avoid destructive damage such as collapse and protect the lives of people inside the building. The Building Standards Act has been revised many times so far, but especially since it was stipulated in the 1981 revision to improve earthquake resistance, many of the houses built after that have earthquake resistant structure.
Seismic Control: Control shaking
Seismic control is a structure in which a special device is embedded in a sturdy wall, and the device absorbs the shaking generated by an earthquake and controls it so that it does not propagate. It has a structure that allows the building itself to be controlled so that it does not shake, and has the advantage of preventing the furniture and home appliances that are installed from falling over.
The Kumamoto Earthquake of April 2016 also damaged a relatively new wooden house. Depending on the type of earthquake, even a house with earthquake resistance cannot be relieved. If you live in an old wooden house, you may be more concerned. How much does one cost when considering earthquake-proof reinforcement? We will explain about seismic retrofitting of wooden houses.
■What is a wooden house that requires earthquake resistance?
The need for seismic retrofitting of a house is first judged by whether it is a wooden house under construction before May 31, 1981. Among the houses that apply to the above, wooden houses that have the following features require seismic reinforcement.
1) Wooden house with continuous openings on the south side and no walls at the four corners of the building
2) Wooden house with relatively large cracks on the outer wall and foundation
3) Wooden house standing in an area with poor ground (liquefaction, etc.)
4) Wooden house with problems in verticality of columns and walls and horizontality of floors
5) Wooden house whose plane shape is complicated
6) Wooden house with tiled roof (thatched roof) and mud wall
7) An old folk house with a pillar size of 12 cm x 12 cm or less
■Seismic retrofit construction costs
Construction costs, including reinforcement design, vary depending on the seismic performance of existing houses. For example, changing the current tiled roof to a metal roof to improve seismic performance costs 1 million yen or more depending on the scale of the house. In general, the cost of earthquake-resistant repair per wall with a width of 91 cm is about 100,000 yen. Also, if you add a concrete foundation, it will cost about 50,000 yen per 1m. The general construction cost will be approximately 1 million yen or more, depending on the scale of existing houses and earthquake resistance. If you also carry out renovation work at the same time, additional costs will be required.
If you purchase an old house and consider renovating the building, consider seismic retrofitting together.
It is possible for the architect to give advice from various points of view, such as the method of seismic reinforcement. If you are considering a refurbishment, please contact us.
What are the new earthquake resistance standards after 1981? Explain the difference from the old earthquake resistance standards
Have you heard of the word (new Earthquake Resistance Standards have been adopted since 1981) as property information, or have you seen that it says new Earthquake Resistance Standards or old Earthquake Resistance Standards? Earthquake Resistance Standards is divided into new Earthquake Resistance Standards and old Earthquake Resistance Standards since 1981. How are these new and old Earthquake Resistance Standards different? Therefore, this time, we will explain the new Earthquake Resistance Standards since 1981, and the differences between the new Earthquake Resistance Standards and the old Earthquake Resistance Standards. If you would like to know more about Earthquake Resistance Standards, please refer to it.
Earthquake Resistance Standards are the criteria for the durable structure of a building against earthquakes during the design stage of the building. The Earthquake Resistance Standards have been revised and the Earthquake Resistance Standards applied after June 1, 1981 are now became to called “new Earthquake Resistance Standards” and the standards applied before that are called “old Earthquake Resistance Standards”.
In 1950, it is a standard set by the Building Standards Act for the purpose of protecting human life and property, and also sets standards for building sites, structures, and equipment. There is a rule that all buildings in Japan today must comply with this standard. The Earthquake Resistance Standards have been reviewed in response to the great earthquakes that occurred in the past. Due to the damage caused by such a great earthquake, the old Earthquake Resistance Standards were reviewed and the new Earthquake Resistance Standards were newly established.
Which buildings are built under the new Earthquake Resistance Standards?
Buildings that meet the new earthquake resistance standards are those that have been approved after the implementation of the new Earthquake Resistance Standards, to the best of our knowledge, it is said that the new Earthquake Resistance Standards have been applied to buildings completed after September to October 1981. However, there are cases where even the building built in 1982 was built with old Earthquake Resistance Standards. In the case of condominiums, the construction period is about one to one and a half years. Even if the building confirmation of the condominium was received in June 1981, it is considered that the new Earthquake Resistance Standards are applied to the building completed in the summer-autumn 1982 at the earliest.
What if you want to know whether the Earthquake Resistance Standards of a building is Old or New?
To find out whether the house you are currently living in or the building you are considering to buy is built with old Earthquake Resistance Standards or new Earthquake Resistance Standards, please check the date on which the building confirmation application for that building was accepted. If the date of issue of the building confirmation notice is June 1, 1981 or later, it is a new Earthquake Resistance Standards building, and if it is before May 31, it is an old Earthquake Resistance Standards building. If the property has a building confirmation, there is a building confirmation notice available. In the unlikely event that owner have lost the building confirmation notice, you will need to request the issuance of a certificate of the items listed on the confirmation ledger at the window of the local government or government office. Please note that if the property is too old, it may not be stored.
Difference between Old and New: Earthquake Resistance Standards changed to Seismic Intensity of 6
The big difference between new Earthquake Resistance Standards and old Earthquake Resistance Standards is the magnitude of seismic resistance standards. The old Earthquake Resistance Standards stipulates that "buildings will hardly be damaged by an earthquake with a seismic intensity of 5 or higher," and a standard was set to withstand medium earthquakes. However, the damage from the 1978 Miyagiken-Oki Earthquake was greater than expected, the earthquake resistance was reviewed as it is expected that the old Earthquake Resistance Standards will cause significant damage even if a large-scale earthquake does not occur. Focusing not only on preventing buildings from collapsing due to an earthquake but also on ensuring the safety of people inside the buildings, the new Earthquake Resistance Standards set up based on the standard of "withstanding an earthquake with a seismic intensity of 6 or more" and take measures against large earthquakes.
In addition, it is possible to reinforce the building of old Earthquake Resistance Standards to the same extent as new Earthquake Resistance Standards by renovation. However, since the structural design is different from the beginning, the idea is to strengthen it, and it is not always the same as the new Earthquake Resistance Standards. In the budget, please make a detailed discussion in the meeting about which part will be used to reinforce the building, which part will be replaced with new equipment and make it clean and beautiful property.
Let's continue with yesterday's explanation. First, let's talk about each type and its characteristics.
"How to decide on roofing tiles" a big change between "renovation" and "new construction".
If you're remodeling, choose "within weight limits".
The lighter the roof, the better the building's earthquake resistance, so one correct answer is that "lighter roof tiles are better". In the case of remodeling where the structure of the building itself cannot be changed, making the roof heavier than before construction will lead to weakening against earthquakes. It is safe to choose roofing materials that are the same or lighter than before, so that a building that has been aged for a long time and has deteriorated over time will not be further weakened by reforming. After that, please decide the roofing material by paying attention to functions such as service life and heat insulation.
For new construction/rebuilding, select the roof by design rather than weight
On the other hand, the weight of roof tiles is less of an issue for “new” or “rebuild”. This is because the structural design of the building should be designed according to the weight of the roof tile you want to use. If you look at the news of recent disasters, you often think that "the roof should be light because of its earthquake resistance". But you don't need to choose roof that is lighter than you need, as long as the structure of your building can support it. When building a new building or rebuilding it, we think it's good to prioritize functions other than earthquake resistance and design, and choose freely. There is no roof tile that has all the functions, so please consider what you need and choose the roof tile you like.
We will compare the four axes of “durability”, “cost”, “design” and “anti-earthquake/typhoon”, and introduce the optimum roof tiles and their reasons.
Select "Clay roof tiles" if "durability" is important
"I want to make a house where people can live with peace of mind for at least 30 years."
"The initial cost can be high, so I want to keep future costs as low as possible."
Clay (pottery) roof tiles are most recommended for such people. Ceramic tiles are pottery, so they rarely deteriorate with age. In addition, it has a wide variety of colors and shapes, and it has little color fading. However, please note that changing the roof from other roofing materials is not recommended due to its earthquake resistance.
Select "Slate roof tiles" if "cost" is important
Slate roof tiles are recommended for those who want to prioritize cost above all. Just because it's cheap doesn't mean it's unreliable. In addition to being inexpensive, partial repairs and replacements are also possible, and there are many contractors who carry out construction. It is safe even in an emergency.
Select "Galvalume steel plate" if "design" is important
If you want an urban house that designability and emphasizes design, a metal roof made of "galvalume steel sheet" is recommended. You may find that the Galvalume steel roof looks like a tin roof from a long time ago and looks cheap. However, because it gives a simple and sharp impression, it looks well with an urban modern house.
In particular, it goes well with box-type houses, which have become very fashionable these days, and houses with a simple exterior with a one-sided roof. It is a roofing material often used by atelier architects.
On the other hand, if you prefer a traditional and solid image, "clay roof tiles/cement roof tiles" will be your choice.
Select "Galvalume steel plate" or "Slate" if "earthquake/typhoon" is important
If both earthquake resistance and wind resistance can be achieved at the same time, we recommend using a metal or slate roof made of "galvalume steel sheet". In the case of remodeling, using heavy Japanese tiles may make the building vulnerable to earthquakes, so it is better to avoid it. In addition, Japanese tiles and sheet-shaped asphalt single tiles, in which each tile is divided into smaller pieces, pose a risk of slippage, even if they are not blown away.
The above are the criteria for selecting roofing materials and the advantages and disadvantages of each roofing material. If you are considering renovating, please feel free to contact us.
Arrows International Realty Corp.