If you are looking for an exterior wall siding contractor in Shou Koumuten, Shibuya-ku, Tokyo
Kakeru Koumuten Co., Ltd. is based in Tokyo and has handled numerous 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 is gaining attention year by year.
Here, we will also introduce case studies, benefits, points to note, and costs!
This will definitely be useful for customers considering exterior wall siding in Shibuya-ku, TokyoPlease take a look!
The most important thing to consider when thinking about exterior wall siding is “multiple estimates”!
Let’s get at least three estimates from exterior renovation companies that cover Shibuya-ku!
Estimates and consultations are free!
Multiple estimates are very welcome!
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 method 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 method of exterior renovation that has various benefits and is gaining attention year by year.
Why is the exterior wall cover method popular?
Here are the “five points” that make Kakeru Koumuten’s exterior wall cover method well-received!
Point 1 Super high durability!!
Metal siding offers an overwhelmingly high expected durability compared to exterior painting.
Galvalume steel, SGL steel, and aluminum are types of metal siding, and with aluminum, you can expect a durability of over 40 years!
Additionally, unlike ceramic siding or mortar exteriors, it does not crack or break, making its sturdiness 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 has integrated insulation.
Moreover, by installing battens before the metal siding installation to create a ventilation layer, the insulation properties are significantly improved!
This enhancement 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 and perforation guarantees, providing high peace of mind 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 Aesthetics!!
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 patterns to tile and wood grain styles.
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 wide range of types and designs of metal siding.
If you find a product you are interested in from the catalog, you can also request cut samples!
What are the points to be aware of when doing exterior wall cover work with metal siding?
Next, we will explain the “three points of caution” when using metal siding for exterior wall cover methods!
Caution 1 Few contractors can perform the installation
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 the estimated costs, to ensure a satisfactory construction, if you are considering the exterior wall cover method with metal siding, be sure to obtain estimates from three or more companies and carefully review the details!
Caution 2 Prone to dents and scratches
Metal siding can develop dents from impacts when objects hit it.
Additionally, being prone to scratches is one of its disadvantages.
If noticeable scratches occur and are a concern, it is possible to request repairs from a specialized repair contractor!
Caution 3 Long construction period
Exterior wall cover work can be considered one of the most extensive renovations among exterior remodeling projects.
While exterior painting typically takes about 2 to 3 weeks, exterior wall cover work can often take nearly 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 types of metal siding, we have prepared separate estimates for each! 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 Auxiliary Parts
2. Removal of Equipment
3. Substrate Adjustment
4. Waterproof Paper Installation (may not be necessary)
5. Installation of Battens
6. Metal Work for Fittings
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 table of estimated costs for exterior wall covering work.
It serves as a guideline for the costs associated with a 30-tsubo exterior wall overlay (cover method).
The costs for exterior wall covering work are determined by 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 | Including Tax Approximately 2,000,000 yen (Siding unit price 11,000 yen/㎡~) |
| SGL Steel | 35 to 40 | Including Tax Approximately 2,200,000 yen (Siding unit price 12,500 yen/㎡~) |
| Aluminum | 40 or more | Including Tax Approximately 2,500,000 yen (Siding unit price 14,000 yen/㎡~) |
The cost will vary depending on the number of attached parts to be painted, the number of windows, and the equipment to be removed and reattached.
Please note that this is just a guideline for the cost, 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 work?”
The most important thing when choosing a contractor or obtaining an estimate is to always obtain multiple estimates!
For this reason, when requesting exterior wall cover work, let’s check the following four points.
1. Check the contents and materials of the estimate
2. Confirm the existence of warranties and aftercare services
3. Obtain estimates from multiple contractors (at least three companies)
4. Confirm whether the contractor performs the exterior wall cover work in-house
By checking 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 if the proposed materials meet your requirements, such as durability and insulation!
Since there are various types of metal siding, such as cost-effective siding and insulation-focused siding, make sure that the siding 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 construction method.”
If you skip creating a ventilation layer and directly attach the material, moisture cannot escape, which can lead to mold, corrosion, and the possibility of the exterior wall material peeling or lifting.
Check whether the proposed construction is appropriate!
・Are the quantities and construction details described in detail?
If the estimate states something vague like “exterior wall cover work 1 set,” it will be difficult to understand the construction method and what the costs are for.
Having clear unit prices and quantities for items like base water drainage and edge trim will provide peace of mind and help prevent issues.
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 siding itself but also the types of detailed auxiliary materials, such as “types of battens,” “siding fasteners,” and “types of waterproof paper“!
For example, 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 more resistant to rust and is recommended.
2. Confirm the existence of warranties and aftercare services
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 types of exterior renovations, so in addition to checking for manufacturer warranties, also confirm whether the company offers its own warranty!
If the contractor has a warranty period, they may provide free repairs within that period.
The warranty period varies by contractor and the specifics of the work, but a 5 to 10-year period 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.
Kakeru Koumuten Co., Ltd. always includes a warranty with its exterior wall cover work.
We also provide after-maintenance services and send out annual DM reminders, so if desired, you can have inspections every year.
3. Obtain estimates from multiple contractors (at least 3 companies)
When requesting exterior wall cover work, be sure to get estimates from multiple contractors.
The cost of the same repair can vary between contractors, as can warranties and after-service options.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired contractor at the best possible price, it is essential to obtain estimates from multiple companies.
When comparing estimates, consider not only the costs but also the details of the plans, materials, and ancillary supplies!
4. Confirm whether the company performs exterior wall cover work in-house
There can be cost differences between companies that handle the work in-house and those that outsource it to external companies, and there is also a higher likelihood of miscommunication and other issues with external contractors.
Moreover, if problems arise after construction, the response may be slow, or there may be no dealings with the external contractor, leading to potential troubles.
One of the reasons to recommend companies that perform the work in-house is that they can respond quickly if any issues arise!
About Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. specializes in roofing, exterior wall work, and scaffolding work with completely in-house construction.
By assembling temporary scaffolding and performing exterior wall cover work in-house, we can keep costs down while ensuring high-quality construction.
Company Introduction
● We store scaffolding materials!
Since we can set up 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 exterior wall 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 Shibuya-ku, Tokyo
Uehara, Shibuya-ku / Uguisudani-cho, Shibuya-ku / Udagawacho, Shibuya-ku / Ebisu Nishi, Shibuya-ku / Ebisu Minami, Shibuya-ku / Ebisu, Shibuya-ku / Oyama-cho, Shibuya-ku / Kamiyama-cho, Shibuya-ku / Sakuragaoka-cho, Shibuya-ku / Sasazuka, Shibuya-ku / Sarugakucho, Shibuya-ku / Shibuya, Shibuya-ku / Shoto, Shibuya-ku / Shinsen-cho, Shibuya-ku / Jingumae, Shibuya-ku / Jinnan, Shibuya-ku / Sendagaya, Shibuya-ku / Daikanyama-cho, Shibuya-ku / Tomigaya, Shibuya-ku / Dogenzaka, Shibuya-ku / Minamidai, Shibuya-ku / Nishihara, Shibuya-ku / Hatagaya, Shibuya-ku / Hachiyama-cho, Shibuya-ku / Hatsudai, Shibuya-ku / Higashi, Shibuya-ku / Hiroo, Shibuya-ku / Honmachi, Shibuya-ku / Maruyama-cho, Shibuya-ku / Moto-Yoyogi-cho, Shibuya-ku / Yoyogi Kamiyama-cho, Shibuya-ku / Yoyogi, Shibuya-ku
Possible Subsidies and Grants in Shibuya-ku, Tokyo
The following subsidies may be available in Shibuya-ku, Tokyo.
“Long-term Excellent Housing Renovation Promotion Project”
1. Subsidy Rate:
1/3 of eligible expenses
2. Maximum Subsidy Amount:
Evaluation Standard Type (when certain performance improvements are 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/unit
*If renovation work is carried out to accommodate three generations living together, an additional 500,000 yen will be added to the above amount for young families, child-rearing households, or existing home buyers who carry out renovation work.
3. Requirements for Receiving Assistance:
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 harmonize with them.
Development of Maintenance and Preservation Plan: For the maintenance and preservation period (30 years or more), the contents required by the evaluation criteria must be established as a maintenance and preservation plan.
Content of Renovation Work: It is required that the renovated house meets 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 even in major earthquakes | Required |
| Energy Conservation Measures | Insulation of windows, walls, floors, ceilings, and efficiency improvements for water heaters, etc. | Required |
| Ease of Maintenance and Renewal | 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 multi-family residences only) | Facilitates future changes in layout, etc. | Optional |
4. Other Requirements:
Renovation work for areas pointed out in the inspection: exterior wall and roof painting, exterior wall and roof replacement, rain gutter replacement, etc.
Implementation of Inspection: Conduct a current condition inspection by a specialist before starting renovation work.
Creation of Maintenance Plan and Renovation Work History: Develop 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 of the plans: “Total Insulation” for insulating the entire house, or “Living Room Only Insulation” for focusing on insulating the windows of the living room.
Eligible Participants
Single-family Homes: Individual owners or those who plan to own in the future.
Multi-family Residences (Condominiums):
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 the eligible expenses
Maximum Subsidy Amount (per dwelling): Up to 150,000 yen
Eligible Products and Construction Conditions
Eligible products must be registered with the secretariat as eligible products, such as high-performance building materials (insulation, windows, glass, etc.), and it is required that energy-saving effects are expected to be over 15%.
Insulation only for the living room requires that “all windows in the living room must be renovated,” and the methods eligible include “roof overlay (cover method),” “inner windows,” and “outer window replacement.”
For detailed conditions and procedures, please check this website.
Residential Simple Renovation Support Project
Requirements
The construction must be carried out by contractors within the district with whom the district has an agreement. The construction cost, excluding consumption tax, must be over 50,000 yen. Renovation work that does not fall under new construction or expansion, including exterior repairs, replacements, and remodeling, is included. Applications must be made after prior consultation and approval before construction begins, and the work must be completed by March 15, 2028.
Eligible Persons
Individuals who are registered as residents in Shibuya Ward, and are owners of the eligible housing or their spouse, parent, or child, and reside in that housing can apply.
(Some exceptions apply, such as for shared areas in condominiums)
Subsidy Rate and Maximum Subsidy Amount
A subsidy of 20% of the eligible construction costs (excluding consumption tax) will be provided (amounts under 1,000 yen will be rounded down). The maximum subsidy is 100,000 yen per case.
For detailed conditions and procedures, please check this website.
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 advantages, making it a recommended exterior renovation.
Importantly, if you are considering exterior wall cover work, be sure to obtain estimates from at least three companies!
Our company specializes in exterior renovations, so if you have any concerns regarding roofs, rain gutters, or exterior walls, please consult Kakeru Koumuten!
From temporary scaffolding work to roof work and exterior wall renovation, we carry out all work in-house. We are confident that we excel in cost, quality, and efficiency compared to other companies in exterior work!
We welcome competitive estimates with confidence!
You will 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, there are no cancellation fees or travel expenses!
We look forward to your inquiries. Thank you very much.
・For exterior renovations in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For rain gutter repair and cleaning in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For solar panel installation in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall cleaning in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For waterproofing work in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For leak repairs in Shibuya, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・After maintenance by Kakeru Koumuten Co., Ltd.
・Construction menu and price list of Kakeru Koumuten Co., Ltd.
・Staff blog and announcements of Kakeru Koumuten Co., Ltd.
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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!
