If you are looking for an exterior wall siding contractor in Kakeru Koumuten, Adachi-ku, Tokyo
Kakeru Koumuten is based in Tokyo and has handled many exterior wall cover projects!
The major benefits of exterior wall cover work are the following three points!
“Improved insulation”
“High durability with solid guarantees for peace of mind”
“Beautiful finish like a new building that cannot be achieved with exterior painting”
Exterior wall cover work has been gaining attention year by year.
Here, we will also introduce case studies, benefits, points to note, and costs!
This will definitely be helpful for customers considering exterior wall siding in Adachi-ku, TokyoPlease take a look!
The most important thing to consider when looking into exterior wall siding is “multiple estimates”!
Let’s get at least three estimates from exterior renovation companies that cover the Adachi area!
Estimates and consultations are free!
We welcome multiple estimates!
What is the exterior wall cover method?
We will explain in detail the recommended points and precautions of the exterior wall cover method!
The exterior wall cover method is a construction process that overlays a new exterior wall on top of the existing exterior wall.
It is possible to overlay various types of walls such as ALC walls, ceramic siding, and mortar walls.
The exterior materials used in the exterior wall cover method are generally lightweight and durable metal siding.
Although the cost is higher compared to exterior painting, it is a renovation method for exterior walls that has various benefits and has been gaining attention year by year.
Why is the exterior wall cover method so popular?
We would like to introduce the “five points” that have received great acclaim for Kakeru Koumuten’s exterior wall cover method!
Point 1 Super high durability!!
Metal siding offers significantly higher durability compared to exterior painting.
Made of Galvalume steel, SGL steel, and aluminum, there are various types of metal siding, but with aluminum, you can expect a durability of over 40 years!
Additionally, unlike ceramic siding or mortar exteriors, it does not crack or break, which is one of its advantages!
If you use high-durability sealing materials, maintenance will be unnecessary for nearly 30 years!
Point 2 Improved Insulation!!
Cross-section of metal siding
The metal siding used in the exterior cover method comes with integrated insulation material.
Furthermore, by installing furring strips before the metal siding installation to create a ventilation layer, the insulation properties are significantly enhanced!
This improvement in insulation is one of the major benefits of metal siding.
Point 3 Comprehensive Warranty for Peace of Mind!!
While many construction companies offer their own warranties for exterior painting, manufacturer warranties are generally not included.
Metal siding comes with solid manufacturer warranties, such as coating warranties and hole warranties, providing a high level of reassurance for long-term exterior renovations!
Point 4 Improved Waterproofing!!
With the exterior material being double-layered, it significantly enhances waterproofing by preventing rainwater intrusion.
Applying waterproof paper before installation further increases waterproofing effectiveness!
Point 5 Improved Aesthetic Appeal!!
Various designs such as wood grain and tile patterns
Metal siding allows for a finish that resembles new construction, which cannot be achieved with exterior painting.
There are various designs available, ranging from simple styles to tile and wood grain patterns.
You can choose from a variety of designs to match the atmosphere and your preferences for the building!
Major manufacturers include “Aiji Industrial“, “Keimyuu“, “Nichiwa“, and “Asahi Tostem“, each offering a variety of types and designs of metal siding.
If you find a product of interest in the catalog, you can also request cut samples!
What are the points to be careful about when doing exterior wall cover work with metal siding?
Next, we will explain the “three points to be careful about” when performing exterior wall cover work using metal siding!
Point 1 Few contractors can perform the work
There are significantly fewer contractors capable of performing the cover method with metal siding compared to exterior painting contractors.
Many inexperienced contractors exist, leading to a higher occurrence of troubles.
Since there is often a variation in estimate costs, to ensure a satisfactory construction, if you are considering the exterior wall cover method with metal siding, make sure to get estimates from three or more companies and carefully review the details!
Point 2 Prone to dents and scratches
Metal siding can develop dents from impacts if objects hit it.
Additionally, being prone to scratches is one of the disadvantages.
If noticeable scratches occur and are concerning, you can request repairs from a specialized repair contractor!
Point 3 Long construction period
Exterior wall cover work can be considered one of the most extensive renovations in exterior remodeling.
While exterior painting typically takes about 2 to 3 weeks, exterior wall cover work can often take close to a month.
The long construction period can be a source of stress for residents, making it one of the disadvantages.
Examples of exterior wall cover work
| Construction Details |
| Exterior wall cover work |
| Completion Date |
| January 2025 |
| Inquiry Details |
|
I am considering a renovation of the exterior walls. I would like to use high-durability metal siding with a solid warranty. |
| Proposal Details |
| We have proposed a roof overlay method using metal siding as per your request. Since you had several preferred metal sidings, we have created separate estimates for each one! You entrusted us with the “Aiji Industry/SF-Gal Stage Shine” metal siding! |
| Price Range |
| 2,000,000 – 2,100,000 yen |
| Construction Period |
| Approximately 3 weeks |
| Existing Exterior Material / New Exterior Material |
|
Existing exterior: ALC |
1. Painting of Attached Parts
2. Removal of Equipment
3. Substrate Adjustment
4. Waterproof Paper Installation (may not be necessary)
5. Installation of Battens
6. Metal Work Processing
7. Main Construction
8. Sealing at Various Locations
9. Reinstallation of Equipment
10. Completion
About the Costs of Exterior Wall Covering Work
This is a guideline table for the costs associated with exterior wall cover work.
It serves as an estimate for the cost of performing the roof overlay (cover method) on a 30-tsubo building.
The cost of the exterior wall cover work will be estimated based on the following calculation:
Exterior wall area (㎡) × Siding unit price + Equipment removal and installation costs + Additional painting costs = Total amount
This will be the total.
| Material | Expected Durability (Years) | Cost Assuming a building area of 30 tsubo (150㎡) |
| Galvalume Steel | 30 to 35 years | Including tax Approximately 2,000,000 yen (Siding unit price 11,000 yen/㎡~) |
| SGL Steel | 35 to 40 years | Including tax Approximately 2,200,000 yen (Siding unit price 12,500 yen/㎡~) |
| Aluminum | 40 years or more | Including tax Approximately 2,500,000 yen (Siding unit price 14,000 yen/㎡~) |
The amount will vary depending on the number of auxiliary parts to be painted, the number of windows, and the equipment to be removed and reattached.
Please note that this is just a guideline amount, and detailed estimates are completely free, so feel free to contact us.
How to Choose a Siding Contractor
There are fewer contractors that handle exterior wall cover work compared to exterior painting contractors, so it may be difficult to find a reliable contractor, such as “where should I request?”
The most important thing in choosing a contractor and obtaining estimates is to always obtain multiple estimates!
For this reason, when requesting exterior wall cover work, let’s confirm the following four points.
1. Check the contents and materials of the estimate
2. Confirm the existence of guarantees and aftercare
3. Obtain estimates from multiple contractors (at least three companies)
4. Confirm whether the contractor performs the exterior wall cover work in-house
By confirming the above four points, you will be able to choose a trustworthy contractor.
1. Check the contents and materials of the estimate
When obtaining an estimate for exterior wall cover work, let’s check the following items!
・Is the proposed new siding material suitable for your requirements?
Check whether materials that meet your requirements, such as durability and insulation, are being proposed!
Since there are various types of metal siding, such as cost-effective siding and insulation-focused siding, confirm whether the siding proposed meets your original requirements!
・Is the proposed construction method appropriate?
When performing exterior wall cover work, it is necessary to create a ventilation layer between the existing exterior wall and the new exterior wall material using a method called “ventilation method.”
If you do not create a ventilation layer and apply it directly, moisture cannot escape, leading to mold and corrosion, or it may cause peeling or lifting of the exterior wall material.
Check whether the proposed construction is appropriate!
・Are the quantities and construction details described in detail?
If the content is vague, such as “exterior wall cover work 1 set,” it is difficult to understand the construction method and what the costs are for, making it hard to compare estimates.
Having the lengths of base water cuts and trim edges clearly listed with unit prices and quantities will provide peace of mind and may prevent trouble.
If there are items of concern that are not included in the estimate, confirm the reason for their exclusion!
・Check the auxiliary materials to be used!
Check not only the main siding but also the types of detailed auxiliary materials, such as “types of battens,” “siding fasteners,” and “types of waterproof paper“!
For example, the siding fasteners are screws, and the overall cost will vary between iron and stainless steel.
While iron may appear cheaper at first glance, stainless steel is resistant to rust and is the recommended fastener.
2. Confirm the existence of guarantees and aftercare
When choosing a contractor for exterior wall cover work, be sure to check for warranties.
Exterior wall cover work is one of the more expensive renovations, so in addition to checking for manufacturer warranties, also confirm whether the contractor offers their own warranty!
If the contractor has a warranty period, they may offer free repairs within that period.
The warranty period varies by contractor and the specifics of the work, but a 5 to 10-year setting is typical.
Additionally, some contractors offer after-service separate from the warranty, so be sure to check if the contractor you are considering has after-service available.
Kakeru Koumuten Co., Ltd. always includes a warranty with exterior wall cover work.
We also provide after-maintenance, and we send out annual DM, so if you wish, inspections can be conducted every year.
3. Obtain estimates from multiple contractors (at least 3 companies)
When requesting exterior wall cover work, be sure to obtain estimates from multiple contractors.
The cost of the same repair can vary between contractors, and warranties and after-services may differ as well.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at the best possible price, obtaining estimates from multiple contractors is essential.
When comparing estimates, consider not only the costs but also the details of the plans, materials, and auxiliary supplies!
4. Confirm whether the contractor performs exterior wall cover work in-house
There are differences in costs between companies that handle the work in-house and those that outsource it to external companies, and problems such as miscommunication with external contractors are more likely to occur.
Additionally, if issues arise after construction, responses may be slow, or there may be no dealings with external contractors, leading to further complications.
One of the reasons to recommend companies that perform the work in-house is that they can respond quickly if something goes wrong!
About Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. specializes in roofing, exterior wall work, and scaffolding work with completely in-house construction for exterior renovations.
Since we can assemble temporary scaffolding and perform exterior wall cover work in-house,
we can provide high-quality work at a reduced cost.
Company Introduction


● We store scaffolding materials!
Since we can install temporary scaffolding in-house, we can provide high-quality exterior renovations at a lower cost!


● We store materials and tools related to exterior construction and painting work!
We also store tools and materials for the roof overlay (cover method)!
Customer Reviews
Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo Metropolis.
Click here for inquiries to Kakeru Koumuten Co., Ltd.!
List of Areas in Adachi-ku, Tokyo
Aoi, Adachi-ku / Adachi, Adachi-ku / Ayase, Adachi-ku / Ikoi, Adachi-ku / Ikoi Honcho, Adachi-ku / Iriya, Adachi-ku / Iriya-machi, Adachi-ku / Umejima, Adachi-ku / Umeda, Adachi-ku / Ogi, Adachi-ku / Otayanada, Adachi-ku / Okino, Adachi-ku / Odai, Adachi-ku / Kaga, Adachi-ku / Kapei, Adachi-ku / Kitakapei-machi, Adachi-ku / Kurihara, Adachi-ku / Kodou, Adachi-ku / Kohoku, Adachi-ku / Koshigaya, Adachi-ku / Koshigaya Honcho, Adachi-ku / Sano, Adachi-ku / Saranuma, Adachi-ku / Kahama, Adachi-ku / Shimane, Adachi-ku / Nitta, Adachi-ku / Shinmei, Adachi-ku / Shinmei Minami, Adachi-ku / Sekihara, Adachi-ku / Senju, Adachi-ku / Senju Akebono-cho, Adachi-ku / Senju Asahi-cho, Adachi-ku / Senju Higashi, Adachi-ku / Senju Okawamachi, Adachi-ku / Senju Kawaramachi, Adachi-ku / Senju Kotobuki-cho, Adachi-ku / Senju Sakuragi, Adachi-ku / Senju Sekiya-machi, Adachi-ku / Senju Ryutata-machi, Adachi-ku / Senju Nakai-machi, Adachi-ku / Senju Nakacho, Adachi-ku / Senju Hashido-machi, Adachi-ku / Senju Midori-machi, Adachi-ku / Senju Miyamoto-cho, Adachi-ku / Senju Motomachi, Adachi-ku / Senju Yanagicho, Adachi-ku / Takenozuka, Adachi-ku / Tatsunuma, Adachi-ku / Chuo Honcho, Adachi-ku / Tsubaki, Adachi-ku / Higashi Ayase, Adachi-ku / Higashi Ikoi, Adachi-ku / Higashi Hoki, Adachi-ku / Higashi Rokugatsu-machi, Adachi-ku / Hitotsuya, Adachi-ku / Hinode-cho, Adachi-ku / Hirano, Adachi-ku / Hoki-machi, Adachi-ku / Hozuka-machi, Adachi-ku / Horinouchi, Adachi-ku / Minami Hanabatake, Adachi-ku / Miyagi, Adachi-ku / Rokugi, Adachi-ku / Motoki, Adachi-ku / Motoki Higashi-machi, Adachi-ku / Motoki Nishi-machi, Adachi-ku / Motoki Minami-machi, Adachi-ku / Motoki Kita-machi, Adachi-ku / Tanzaike, Adachi-ku / Yanaka, Adachi-ku / Yanagihara, Adachi-ku / Rokugatsu, Adachi-ku / Rokumachi, Adachi-ku
Possible Subsidies and Grants in Adachi-ku, Tokyo
The following subsidies may be available in Adachi-ku, Tokyo.
“Long-term Excellent Housing Renovation Promotion Project”
1. Subsidy Rate:
One-third of the eligible expenses
2. Subsidy Limit:
Evaluation Standard Type (when a certain level of performance improvement is recognized):800,000 yen per unit
Certified Long-term Excellent Housing Type (when obtaining certification for long-term excellent housing (renovation)):1,600,000 yen per unit
*If renovation work is carried out for multi-generational living, or if young families or existing home buyers carry out renovation work, an additional 500,000 yen will be added to the above amounts.
3. Requirements for Receiving Subsidies:
Securing Living Space: The floor area of at least one floor (excluding stair areas) must be 40㎡ or more, and the total floor area must be 55㎡ or more.
Living Environment: If located within areas such as district plans or landscape plans, it must be in harmony with them.
Development of Maintenance and Preservation Plan: A maintenance and preservation plan must be established for a period of maintenance and preservation (30 years) that meets the evaluation standards.
Content of Renovation Work: The renovated residence must comply with the following performance items.
| Performance Item | Overview | Required/Optional |
|---|---|---|
| Measures against deterioration of structural framework | Prevention of decay and termite damage to pillars, floors, etc. | Required |
| Earthquake Resistance | Ensuring earthquake resistance to prevent collapse during major earthquakes | Required |
| Energy Conservation Measures | Insulation of windows, walls, floors, ceilings, and efficiency improvements for water heaters, etc. | Required |
| Ease of Maintenance and Updates | Facilitating inspection, cleaning, and replacement of water supply and drainage pipes | Optional |
| Measures for the Elderly (for multi-family housing only) | Barrier-free design | Optional |
| Variability (for condominiums only) | Facilitates future changes in layout, etc. | Optional |
4. Other Requirements:
Renovation work for areas pointed out in the inspection such as exterior wall and roof painting, exterior wall and roof replacement, and rain gutter replacement.
Implementation of Inspection: Conduct a current condition inspection by a specialist before starting renovation work.
Creation of Maintenance Plan and Renovation Work History: Formulate a maintenance plan after renovation and create and preserve a history of the work.
For detailed conditions and procedures, please check the official website of the Ministry of Land, Infrastructure, Transport and Tourism.
Support Program for Insulation Renovation of Existing Homes
Overview of the System and Target Construction Categories
Program Name: Support Program for Insulation Renovation of Existing Homes (Ministry of the Environment Subsidy, executed by the Hokkaido Environmental Foundation)
This is a format where you can choose either one plan: “Total Insulation” for insulating the entire house or “Living Room Insulation Only” for focusing on the windows in the living room.
Eligible Participants
Single-family Homes: Individual owners or those who plan to own in the future.
Condominiums (for sale):
Individual Application: Owner or representative of the management association.
Overall Application: Representative composed of the management association or owners of the entire building, etc.
Subsidy Amount
Subsidy Rate: Up to 1/3 of eligible expenses
Maximum Subsidy Amount (per dwelling): Up to 150,000 yen
Eligible Products and Construction Conditions
Eligible items must be high-performance building materials registered with the secretariat (such as insulation materials, windows, glass, etc.), and it is required that energy-saving effects are expected to be over 15%.
For insulation only in the living room, it is mandatory to “renovate all windows in the living room,” and the methods eligible are “roof overlay (cover method),” “inner windows,” and “outer window replacement.”
For detailed conditions and procedures, please check this website.
Energy-Saving Renovation Subsidy
Eligible Persons and Requirements
You must be a registered resident of Adachi Ward and the owner of an existing single-family home that you reside in.
It is essential that the pre-application is completed before the start of construction (before scaffolding installation begins).
All materials used must be new, and contractors must be local businesses within the ward.
The construction cost (excluding tax) must be 50,000 yen or more.
You must not have received the same subsidy within the past five years and have no outstanding resident tax payments.
Eligible Construction (Example of Exterior Wall Renovation)
Exterior wall painting using “heat-reflective paint” with a reflectance rate of 50% or more.
Installation of high-performance glass and insulation materials (however, heat-reflective painting is the main focus for exterior wall work).
Subsidy Rate and Amount
Subsidy Rate: 1/3 of eligible construction costs (amounts under 1,000 yen are rounded down).
Maximum Subsidy: 50,000 yen (per unit).
Leave your exterior wall cover work to Kakeru Koumuten Co., Ltd., the exterior renovation specialists!
This concludes the information on the exterior wall cover method.
Exterior renovations that significantly improve insulation and provide a stylish look like new construction are limited to exterior wall siding work.
While the cost is higher compared to exterior wall painting, there are various benefits, making it a recommended exterior renovation.
Importantly, if you are considering exterior wall cover work, be sure to obtain estimates from at least three different companies!
Our company specializes in exterior renovations, so if you have any concerns regarding your roof, rain gutters, or exterior walls, please consult Kakeru Koumuten Co., Ltd. in Yokohama!
From temporary scaffolding work to roof construction and exterior wall renovation, we carry out all work in-house. We are confident that we surpass other companies in terms of cost, quality, and efficiency for exterior work!
We welcome competitive estimates!
You’ll be glad you chose us! We take every request seriously to ensure your satisfaction.
Estimates and inspections are free!
If our construction plan is inferior to others, please feel free to decline!
Rest assured, we do not charge any cancellation fees or travel expenses!
We look forward to your inquiries. Thank you very much.
・For exterior renovations in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For rain gutter repairs and cleaning in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For solar panel installation in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall cleaning in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For waterproofing work in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For leak repairs in Adachi-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・After maintenance by Kakeru Koumuten Co., Ltd.
・Construction menu and price list by Kakeru Koumuten Co., Ltd.
・Staff blog and announcements from Kakeru Koumuten Co., Ltd.
Consultations via LINE are also very welcome◎
AAA is a young company with an average age in the early 20s, but our technology is second to none.
One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!
We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!




