If you are looking for an exterior siding contractor in Kakeru Koumuten Co., Ltd. in Bunkyo-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 projects are the following three points!
“Improved insulation”
“High durability with solid guarantees for peace of mind”
“Beautiful finish like new construction that cannot be achieved with exterior painting”
Exterior wall cover projects are gaining attention year by year.
Here, we will also introduce case studies, benefits, points to note, and costs!
For customers considering exterior siding in Bunkyo-ku, Tokyo, this will definitely be helpfulPlease take a look!
The most important thing to consider when looking into exterior siding is “getting multiple estimates”!
Let’s obtain at least three estimates from exterior renovation companies that cover Bunkyo-ku!
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 method that overlays 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 in the exterior wall 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 wall cover method so popular?
We would like to introduce the “five points” that have received positive feedback for Kakeru Koumuten Co., Ltd.’s exterior wall cover method!
Point 1 Super high durability!!
Metal siding offers an overwhelmingly high expected durability compared to exterior wall 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 wall cover method has integrated insulation material.
Moreover, by installing battens before the metal siding installation to create a ventilation layer, the insulation performance is 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 wall 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 wall material being double-layered, waterproofing is significantly enhanced to prevent 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 a 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 that match the atmosphere and your preferences of 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’re interested in a product from the catalog, you can also request cut samples!
What to be cautious about when doing exterior wall cover work with metal siding?
Next, we will explain the “three points of caution” when performing exterior wall cover work using metal siding!
Caution 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, which can lead to frequent 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, 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 drawbacks.
If noticeable scratches occur and are concerning, 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 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 created 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 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 table of estimated costs for exterior wall cover work.
It serves as a cost estimate for performing the roof overlay (cover method) on a building with a total area of 30 tsubo.
The cost of exterior wall cover work is 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 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 amount will vary depending on the number of attached parts to be painted, the number of windows, and the equipment to be removed or installed.
This is just a rough estimate, so for a detailed quote, please feel free to contact us as it is completely free of charge.
How to Choose an Exterior Siding Contractor
There are fewer contractors that handle exterior 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 a quote is to always obtain multiple quotes!
For this reason, when requesting exterior 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 quotes from several contractors (at least three)
4. Confirm whether the contractor performs the exterior 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 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 proposed siding aligns with your original requirements!
・Is the proposed construction method appropriate?
When performing exterior 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 apply it directly without creating a ventilation layer, moisture cannot escape, leading to mold or corrosion, and may result in peeling or lifting of the exterior 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 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 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 “type of furring strip,” “siding fasteners,” and “type 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 recommended as a fastener.
2. Confirm the existence of warranties and aftercare
When choosing a contractor for exterior wall cover work, make sure to check for warranties.
Exterior wall cover work is one of the more expensive renovations, so in addition to the manufacturer’s warranty, be sure to confirm whether the company offers its 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 common.
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 provides a warranty for exterior wall cover work.
We also conduct after-maintenance and send out annual DM, 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, and warranties and after-sales 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, be sure to consider not only costs but also plan details, materials, and auxiliary supplies!
4. Confirm whether the company 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 there is also a higher likelihood of miscommunication and other issues with external contractors.
Additionally, if problems arise after construction, responses may be delayed, or the company may not have dealings with the external contractor, leading to further complications.
Being able to respond quickly in case of issues is one of the reasons why companies that perform the work in-house are recommended!
About Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. specializes in roofing, exterior wall work, and scaffolding work with complete 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 roof overlay (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 Bunkyo-ku, Tokyo
Otsuka, Bunkyo-ku / Otowa, Bunkyo-ku / Kasuga, Bunkyo-ku / Koishikawa, Bunkyo-ku / Korakuen, Bunkyo-ku / Kohinata, Bunkyo-ku / Suidobashi, Bunkyo-ku / Sekiguchi, Bunkyo-ku / Sengoku, Bunkyo-ku / Sendagi, Bunkyo-ku / Nishikata, Bunkyo-ku / Nezu, Bunkyo-ku / Hakusan, Bunkyo-ku / Honkomagome, Bunkyo-ku / Hongo, Bunkyo-ku / Mukogaoka, Bunkyo-ku / Mejirodai, Bunkyo-ku / Yayoi, Bunkyo-ku / Yushima, Bunkyo-ku
Possible Subsidies and Grants in Bunkyo-ku, Tokyo
The following subsidies may be available in Bunkyo-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 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/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 undertaking 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 areas such as district plans or landscape plans, it must be in harmony with them.
Development of Maintenance and Preservation Plan: For the maintenance and preservation period (30 years or more), the content required by the evaluation criteria must be established as a maintenance and preservation plan.
Content of Renovation Work: It is required that the renovated housing 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 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 Renewal | Facilitating inspection, cleaning, and replacement of water supply and drainage pipes | Optional |
| Measures for the Elderly, etc. (for multi-family housing only) | Barrier-free design | Optional |
| Variability (for apartment buildings only) | Facilitates future changes in floor plans, etc. | Optional |
4. Other Requirements:
Renovation work for areas pointed out in the inspection including exterior wall and roof painting, exterior wall and roof replacement, and rain gutter replacement.
Conducting Inspections: A current condition inspection by a specialist must be conducted before starting renovation work.
Creating Maintenance Plans and Renovation History: Develop a maintenance plan post-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 one of the two plans: “Total Insulation” for insulating the entire house, or “Living Room Only Insulation” focusing on the windows in the living room.
Eligible Participants
Single-family homes: Individual owners or those who plan to own in the future.
Apartment Buildings (Condominiums):
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 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), with an expected energy-saving effect of 15% or more.
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.
Trust Kakeru Koumuten Co., Ltd. for Your Exterior Wall Covering Work!
This concludes the information on the exterior wall covering method.
Exterior renovations that significantly improve insulation and provide a stylish look like new construction are limited to exterior wall siding work.
While costs are higher compared to exterior painting, there are various benefits, making it a recommended exterior renovation.
Importantly, if you are considering exterior wall covering 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 roofs, rain gutters, or exterior walls, please consult Kakeru Koumuten Co., Ltd.!
We handle everything from temporary scaffolding work to roof construction and exterior wall renovation entirely in-house. We are confident that our costs, quality, and efficiency in exterior work surpass those of other companies!
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 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 Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall painting in Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For rain gutter repairs and cleaning in Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For solar panel installation in Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall cleaning in Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For waterproofing work in Bunkyo-ku, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For leak repairs in Bunkyo-ku, 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.
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!
