If you are looking for an exterior siding contractor in Kakeru Koumuten, Koto-ku, Tokyo
Kakeru Koumuten is based in Tokyo and has handled many exterior cover projects!
The major benefits of exterior cover projects are the following three points!
“Improved insulation”
“High durability with solid guarantees for peace of mind”
“Beautiful finishes like new construction that cannot be achieved with exterior painting”
Exterior cover projects are 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 siding in Koto-ku, Tokyo, so please take a look!
The most important thing to consider when thinking about exterior siding is “comparative estimates”!
Be sure to obtain at least three comparative estimates from exterior renovation companies that cover Koto-ku!
Estimates and consultations are free!
Comparative estimates are very welcome!
What is the exterior cover method?
We will explain in detail the recommended points and precautions of the exterior cover method!
The exterior 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 exterior walls such as ALC walls, ceramic siding, and mortar walls.
The exterior materials used in the exterior cover method are generally lightweight and durable metal siding.
While the costs are 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 cover method popular?
Here are the “five points” that make Kakeru Koumuten’s exterior cover method well-received!
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 material.
Moreover, by installing battens 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 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, significantly enhancing waterproofing.
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 your 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 you are interested in while looking at 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, I will explain the “three points to be aware of” when using metal siding for exterior wall cover methods!
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 when objects hit it.
Additionally, being prone to scratches is one of its disadvantages.
If noticeable scratches occur and are a concern, you can request repairs from a specialized repair contractor!
Point 3 Long construction period
Exterior wall cover work can be considered the most extensive among exterior renovations.
While exterior painting usually 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 types of metal siding, so we 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 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 showing the estimated costs for exterior wall cover work.
It is an estimate for the cost of performing the exterior wall overlay method on a building with a floor area of 30 tsubo.
The cost of the exterior wall cover work will be determined by the calculation below.
Exterior wall area (㎡) × Siding unit price + Equipment removal and installation costs + Additional painting costs = Total amount
This will be the final amount.
| 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 amount will vary depending on the number of painted accessories and windows, as well as the equipment that needs to be removed and reattached.
Please note that this is only a rough estimate, and detailed estimates are completely free, so feel free to contact us.
How to Choose a Siding Contractor in Koto-ku, Tokyo
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 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 confirm the following four points.
1. Check the contents and materials of the estimate
2. Confirm the existence of warranties and aftercare
3. Obtain multiple estimates from different contractors (at least three companies)
4. Check if 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 if 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 proposed siding meets 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 exterior wall and the new exterior wall material using a method called “ventilation method.”
If you do not create a ventilation layer and directly attach it, moisture cannot escape, leading to mold or corrosion, and may result in peeling or lifting of the exterior wall material.
Check whether the proposed work is appropriate!
・Are the quantities and construction details clearly specified?
If the content is vague, such as “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 drip edges and trim lengths will provide peace of mind 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 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 resistant to rust and is a recommended fastener.
2. Confirm the existence of warranties 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 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 common.
Additionally, some contractors offer after-sales service separate from warranties, so be sure to check if the contractor you are considering has after-sales service.
Kakeru Koumuten Co., Ltd. always provides a warranty for exterior wall cover work.
We also conduct after-maintenance and send out annual direct mail, so if you wish, inspections can be done 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 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 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 ancillary supplies!
4. Confirm whether the company performs exterior wall cover work in-house
Companies that handle their own construction versus those that outsource to external companies can have different costs, and there is a higher likelihood of issues such as miscommunication with external contractors.
Additionally, if problems arise 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 their own construction 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 complete in-house construction for exterior renovations.
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 cover method!
Customer Reviews
Service Area
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 Koto-ku, Tokyo
Aomi, Koto-ku / Ariake, Koto-ku / Ishijima, Koto-ku / Umibe, Koto-ku / Eitai, Koto-ku / Edagawa, Koto-ku / Echujima, Koto-ku / Oogibashi, Koto-ku / Oshima, Koto-ku / Kameido, Koto-ku / Kitasuna, Koto-ku / Kiba, Koto-ku / Kiyosumi, Koto-ku / Saga, Koto-ku / Sarue, Koto-ku / Shiohama, Koto-ku / Shiohama, Koto-ku / Shinonome, Koto-ku / Shirakawa, Koto-ku / Shindaibashi, Koto-ku / Shinkiba, Koto-ku / Shinsuna, Koto-ku / Sumiyoshi, Koto-ku / Sengoku, Koto-ku / Chida, Koto-ku / Takahashi, Koto-ku / Tatsumi, Koto-ku / Chuo Bouhatei, Koto-ku / Toyo, Koto-ku / Tokiwa, Koto-ku / Tominaka, Koto-ku / Toyosu, Koto-ku / Higashisuna, Koto-ku / Hirano, Koto-ku / Fukagawa, Koto-ku / Fukuzumi, Koto-ku / Fuyuki, Koto-ku / Koishiba, Koto-ku / Botan, Koto-ku / Minamisuna, Koto-ku / Miyoshi, Koto-ku / Mouri, Koto-ku / Morishita, Koto-ku / Monzen Nakacho, Koto-ku / Yumenoshima, Koto-ku / Wakasu, Koto-ku
Possible Subsidies and Grants in Koto-ku, Tokyo
The following subsidies may be available in Koto-ku, Tokyo.
“Long-term Excellent Housing Renovation Promotion Project”
1. Subsidy Rate:
1/3 of eligible expenses
2. Maximum Subsidy Amount:
Evaluation Criteria Type (when a certain level of performance improvement is recognized):800,000 yen/unit
Certified Long-term Excellent Housing Type (when obtaining certification for long-term excellent housing (renovation)):1,600,000 yen/unit
*If renovation work for multi-generational living is carried out, an additional 500,000 yen will be added to the above amount for young families, child-rearing households, or existing home buyers who implement the renovation work.
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 an area subject to district planning or landscape planning, it must be in harmony with those plans.
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.
Contents of Renovation Work: It is required that the renovated housing complies with the following performance items.
| Performance Items | Overview | Required/Optional |
|---|---|---|
| Measures Against Structural Deterioration | 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 (Applicable to Multi-Family Housing Only) | Barrier-free design | Optional |
| Variability (for condominiums only) | Facilitates future changes to the layout | Optional |
4. Other Requirements:
Renovation work for points indicated in the inspection includes exterior wall and roof painting, replacement of exterior walls and roofs, and rain gutter replacement.
Conducting Inspections: A current condition inspection by a specialist must be conducted before starting renovation work.
Creating a Maintenance Plan and Renovation 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 program allows you to choose either a “Total Insulation” plan that insulates the entire house or a “Living Room Only Insulation” plan that focuses on insulating the windows of the living room, selecting one of the two plans.
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.
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 include high-performance building materials registered with the secretariat (such as insulation materials, windows, and glass) that are expected to achieve energy-saving effects of 15% or more.
If only the living room is insulated, 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.
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 costs are higher compared to exterior painting, there are various advantages, making it a recommended exterior renovation.
Importantly, if you are considering exterior wall cover work, it is essential 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 Co., Ltd.!
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 organization are unmatched compared to other companies!
We welcome competitive estimates with confidence!
You’ll be glad you chose us! We take every request seriously to ensure you feel that way.Estimates and inspections are free!
If our construction plan is inferior to that of other companies, 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 Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For rain gutter repairs and cleaning in Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For solar panel installation in Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall cleaning in Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For waterproofing work in Koto-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For leak repairs in Koto-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.
We welcome consultations via LINE as well◎
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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!
