目次
- 1
- 1.1 What is the exterior wall cover method?
- 1.2 Examples of exterior wall cover work
- 1.2.1 1. Painting of Accessory Parts
- 1.2.2 2. Removal of Equipment
- 1.2.3 3. Substrate Adjustment
- 1.2.4 4. Waterproof Paper Installation (may not be necessary)
- 1.2.5 5. Installation of Battens
- 1.2.6 6. Metal Work for Fittings
- 1.2.7 7. Main Construction
- 1.2.8 8. Sealing at Various Locations
- 1.2.9 9. Reinstallation of Equipment
- 1.2.10 10. Completion
- 1.3 About the Costs of Exterior Wall Covering Work
- 1.4 How to Choose a Siding Contractor
- 1.5 About Kakeru Koumuten Co., Ltd.
- 1.6 Customer Feedback
- 1.7 Service Areas
- 1.8 PossibleSubsidies and Grants in Takatsu-ku, Kawasaki City
- 1.9 Leave your exterior wall cover work to the exterior renovation specialists at Kakeru Koumuten!
Aoba-ku, Kawasaki If you are looking for an exterior wall siding contractor, contact Kakeru Koumuten
Kakeru Koumuten is based in Yokohama 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 is gaining attention year by year.
Here, we will also introduce case studies, benefits, precautions, and costs!
This will definitely be helpful for customers considering exterior wall siding in Aoba-ku, Kawasaki, so please take a look!
The most important thing to consider when thinking about exterior wall siding is “multiple estimates”!
Let’s get at least 3 estimates from exterior renovation companies that cover Aoba-ku, Kawasaki!
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 the process of overlaying a new exterior wall on top of the existing one.
It is possible to overlay various types of walls such as ALC walls, ceramic siding, and mortar walls.
The exterior materials used for 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 is gaining attention year by year.
Why is the exterior wall cover method popular?
We would like to introduce the “5 points” that have received positive feedback for Kakeru Koumuten’s exterior wall cover method!
Point 1 Super high durability!!
Metal siding offers significantly higher 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 comes with integrated insulation.
Moreover, by installing battens before the metal siding, a ventilation layer is created, significantly enhancing insulation!
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 and perforation guarantees, providing a high level of reassurance for long-term exterior renovations!
Point 4 Improved Waterproofing!!
With the exterior material being double-layered, it effectively prevents rainwater intrusion, greatly enhancing waterproofing.
Applying waterproof paper before installation further increases waterproofing!
Point 5 Improved Aesthetics!!
Various designs such as wood grain and tile patterns
Metal siding allows for a finish that resembles a new construction, which cannot be achieved with exterior painting.
There are various designs available, from simple styles to tile and wood grain patterns.
You can choose from a variety of designs that match the atmosphere of the building and your preferences!
Major manufacturers include “Aiji Industrial“, “Keimyuu“, “Nichihara“, and “Asahi Tostem“, each offering a wide range of types and designs of metal siding.
If you’re interested in a product 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 estimated costs, to ensure a satisfactory construction, if you are considering the exterior wall cover method with metal siding, make 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 drawbacks.
If noticeable scratches occur and are a concern, you can 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 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. You had several preferred metal sidings, so we created separate estimates for each! We have been entrusted with the metal siding “Aijii Kogyo/SF-Gal Stage Shine”! |
| 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 Accessory 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 guideline table for the costs associated with exterior wall cover work.
It serves as a cost estimate for performing the exterior wall cover method on a building with a floor area of 30 tsubo.
The cost of the exterior wall cover work will be estimated based on the calculation below.
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/m²~) |
| SGL Steel | 35 to 40 years | Including tax Approximately 2,200,000 yen (Siding unit price 12,500 yen/m²~) |
| Aluminum | 40 years or more | Including tax Approximately 2,500,000 yen (Siding unit price 14,000 yen/m²~) |
The price varies depending on the number of attached parts to be painted, the number of windows, and the equipment to be removed or installed.
Please note that this is only a rough estimate, and detailed quotations 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 challenging to find a reliable contractor, such as “where should I request the work?”
The most important thing when choosing a contractor or obtaining a quote is to always obtain multiple quotes!
Therefore, 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
3. Obtain multiple quotes from several contractors (at least three)
4. Verify 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 needs?
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 aligns with your original requirements!
・Is the proposed installation method appropriate?
When performing exterior wall cover work, it is necessary to create a ventilation layer between the existing wall and the new siding material using a method called “ventilation method.”
If you skip the ventilation layer and apply the siding directly, moisture cannot escape, which could lead to mold, corrosion, or peeling and lifting of the siding material.
Check whether the proposed work is appropriate!
・Are the quantities and construction details clearly specified?
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, making it hard to compare estimates.
Having clear unit prices and quantities for items like foundation water cuts and trim lengths will provide reassurance and help prevent issues.
If there are items of concern that are not included in the estimate, confirm the reasons 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, siding fasteners are screws, and the overall cost can vary between iron and stainless steel.
While iron may seem cheaper at first glance, stainless steel is resistant to rust and is the recommended fastener.
2. Confirm the existence of warranties and aftercare
When choosing a contractor for exterior wall covering work, make sure to check for warranties.
Since exterior wall covering work is one of the more expensive types of exterior renovations, it’s important to confirm not only the manufacturer’s warranty but also whether the contractor offers their 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 setting is typical.
Additionally, some contractors offer after-sales service separate from the warranty, so be sure to check if the contractor you are considering has after-sales service.
Kakeru Koumuten Co., Ltd. always includes a warranty with their exterior wall covering work.
We also provide after-maintenance services and send out annual direct mail, so if desired, annual inspections are possible.
3. Obtain estimates from multiple contractors (at least 3 companies)
When requesting exterior wall covering work, be sure to obtain estimates from multiple contractors.
The cost of the same repair can vary between contractors, as can the warranties and after-sales services offered.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at the best 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 auxiliary materials!
4. Confirm whether the contractor performs exterior wall covering work in-house
There are differences in costs between companies that handle the work in-house and those that outsource to external companies, and issues such as miscommunication with external contractors can easily arise.
Moreover, if problems occur after construction, the response may be slow, or there may be no dealings with the external construction company, leading to potential troubles.
One reason to recommend companies that perform the work in-house is that they can respond immediately if any issues arise!
About Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. is a renovation company based in Aoba-ku, Yokohama, Kanagawa Prefecture, specializing in roofing, exterior wall work, and scaffolding work with completely in-house construction.
By assembling temporary scaffolding and performing exterior wall covering 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 ourselves, we can provide high-quality exterior renovations at a lower cost!


● We store materials and tools related to exterior construction and painting!
We also store tools and materials for the exterior wall cover method!
Customer Feedback
Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
Click here for inquiries to Kakeru Koumuten Co., Ltd.!
List of Areas in Takatsu-ku, Kawasaki City
Amezu, Unanene, Kajigaya, Kanigaya, Kamisakunobe, Kitano River, Kitamikata, Kuchi, Sakado, Shomoguchi, Shomoguchi Fujimidai, Shimosakunobe, Shimono, Shinsaku, Suenaga, Suwa, Seta, Chitune, Chitune Shinmachi, Higashinogawa, Kusue, Kusumoto, Futako, Mizoguchi, Mukogaoka
PossibleSubsidies and Grants in Takatsu-ku, Kawasaki City
The following subsidies may be available in Takatsu-ku, Kawasaki City.
Summary of Kawasaki City’s “Long-term Excellent Housing System”
Purpose of the System
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This is a certification system aimed at promoting housing that can be used in good condition for a long time (long-term excellent housing).
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It certifies plans related to the construction and maintenance of housing (“Long-term Excellent Housing Construction Plans”).
Background and History of Revisions to the System
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In 2016, the scope of certification was expanded to include renovations and extensions of residential buildings.
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From October 2022, maintenance and preservation plans for existing homes without construction also became eligible for certification.
In June 2009 (Heisei 21), the Long-Term Excellent Housing Promotion Act was enacted.
Certification Standards (Main Points)
To receive certification, the following performance and design standards must be met:
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Deterioration Measures: A structure with high durability designed to withstand long-term use
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Earthquake Resistance: A structure prepared for large-scale earthquakes with designs to mitigate expected damage
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Flexibility: A structure that allows for flexible changes in layout
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Ease of Maintenance: A design that facilitates cleaning, inspection, and repairs
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Barrier-Free Design: Space designed for easy future renovations
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Energy Efficiency: Ensuring energy efficiency, such as thermal insulation performance
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Living Environment and Landscape: A design that considers the surrounding environment
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Disaster Consideration: Design that responds to natural disasters
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Unit Area: Must meet a certain size (Detached houses: 75㎡ or more, Multi-family dwellings: 40-55㎡ or more)
Certification Application Procedures
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Certification is conducted based on the city’s “guidelines”.
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When applying, it is necessary to submit a pre-confirmation document for the “Residential Environment Standards” and “Disaster Consideration Standards” to verify compliance with the criteria.
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The certification application also requires the attachment of materials such as urban planning maps.
Overall Points
| Item | Content |
|---|---|
| System Name | Long-term Quality Housing Certification System |
| Purpose | Promotion and quality assurance of housing suitable for long-term use |
| Target | New construction, renovation, and maintenance plans for existing homes |
| Certification Criteria | Earthquake resistance, adaptability, energy efficiency, ease of maintenance, etc. |
| Required Documents | Compliance report, urban planning maps, etc. |
For more details, please check the official website of Yokohama City.
Leave your exterior wall cover work to the exterior renovation specialists at Kakeru Koumuten!
This concludes the information about the wall cover method.
Exterior renovations that significantly improve insulation and provide a stylish look like a new building are limited to exterior wall siding work.
While the cost is higher compared to exterior wall painting, it offers various benefits and is a recommended exterior renovation.
The important thing is, if you are considering wall cover work, be sure to get 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 in Yokohama!
We carry out everything from temporary scaffolding work to roof work and exterior wall renovation work entirely in-house. We are confident that our costs, quality, and efficiency in exterior work are unmatched!
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!
We do not charge any cancellation fees or travel expenses, so please rest assured!
We look forward to your inquiries. Thank you very much.
・Trust Kakeru Koumuten Co., Ltd. for exterior renovations in Aoba-ku, Kawasaki!
・Aoba-ku, KawasakiTrust Kakeru Koumuten Co., Ltd. for roof renovations in Aoba-ku, Kawasaki!
・Trust Kakeru Koumuten Co., Ltd. for rain gutter repairs and cleaning in Aoba-ku, Kawasaki!
・Trust Kakeru Koumuten Co., Ltd. for solar panel installation in Aoba-ku, Kawasaki!
・Trust Kakeru Koumuten Co., Ltd. for exterior wall cleaning in Aoba-ku, Kawasaki!
・Trust Kakeru Koumuten Co., Ltd. for exterior wall painting in Aoba-ku, Kawasaki!
・Trust Kakeru Koumuten Co., Ltd. for waterproofing work in Aoba-ku, Kawasaki!
・Trust Kakeru Koumuten Co., Ltd. for leak repairs in Aoba-ku, Kawasaki!
・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.
We welcome consultations via LINE as well◎
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!







