If you are looking for an exterior wall siding contractor in Mitaka City, Tokyo, contact Kakeru Koumuten Co., Ltd.

This will definitely be helpful for customers considering exterior wall siding in Mitaka City, TokyoPlease take a look!

The most important thing to consider when looking into exterior wall siding is “getting multiple estimates”!
Let’s obtain at least three estimates from exterior renovation companies that cover the Mitaka City 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 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?

Here are the “five points” that have earned Kakeru Koumuten Co., Ltd. high praise for its exterior wall cover method!

Point 1　Super high durability!!

Metal siding offers significantly higher durability compared to exterior painting.
Made of Galvalume steel, SG steel, or 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.
Moreover, 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 and perforation guarantees, providing a high sense of security 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 a new construction, which cannot be achieved with exterior painting.
There are various designs available, ranging from simple to tile and wood grain patterns.
You can choose from a variety of designs to match the atmosphere and your preferences of the building!
Major manufacturers include “Aiji Giken“, “Keimyuu“, “Nichiwa“, and “Asahi Tostem“, each offering a 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 important points to consider for exterior wall cover work with metal siding?

Next, we will explain the “three important points” to consider when using metal siding for exterior wall cover work!

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 wide variation in estimate 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!

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 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 is arguably the most extensive type of exterior renovation.
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. Since this is a comparative estimate, I would like to request a quote for the same metal siding as the estimates from other companies.

Proposal Details

We have proposed the 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! You entrusted us with the “Aiji Industrial/SF-Gal Stage Shine” metal siding! The above siding is made of galvanized steel plate with heat-insulating fluorine processing, and since it is an integrated insulation material, it has high thermal insulation properties. You mentioned that you obtained estimates from three companies, and we were able to secure your order due to our competitive pricing and thorough explanations compared to other companies!

Price Range

2,000,000 – 2,100,000 yen

Construction Period

Approximately 3 weeks

Existing Exterior Material / New Exterior Material

Existing exterior: ALC 　New exterior: Metal siding (Aiji Industrial/SF-Gal Stage Shine) 　Material: Galvanized steel plate with heat-insulating fluorine processing 　In-house warranty: 10 years 　Manufacturer warranty: 10 years for fading, 10 years for rust, 10 years for perforation 　Furring strips: Made of resin

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. Fabrication of Special Metal Parts

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 overlay (cover method) on a building with a total area of 30 tsubo.

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	Including Tax Approximately 2,000,000 yen (Siding unit price 11,000 yen/m²~)
SGL Steel	35 to 40	Including Tax Approximately 2,200,000 yen (Siding unit price 12,500 yen/m²~)
Aluminum	40 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 when choosing a contractor or obtaining a quote is to always obtain multiple quotes!

For this reason, when requesting exterior cover work, let’s check the following four points.

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 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, make sure 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 cause peeling or lifting of the exterior wall material.
Check if the proposed construction is appropriate!

・Are the quantities and construction details described in detail?

If the estimate states something vague like “exterior 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 foundation water drainage 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 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, 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 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 setting is common.

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 provides a warranty for exterior wall cover work.
We also conduct after-maintenance and send out annual DM, so if you wish, annual inspections can be arranged.

About Kakeru Koumuten Co., Ltd. Warranty翔工務店の屋根工事、外壁塗装工事、シーリング工事の保証など簡単にご説明させて頂いております！！ 弊社では前金、中間金は頂いておりません！！...

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, as can the warranties and after-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 auxiliary materials!

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.

Moreover, if problems arise after the work is completed, the response may be slow, or there may be no dealings with the external contractor, leading to potential troubles.
Being able to respond immediately in case of any 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 for exterior renovations.
By assembling temporary scaffolding and performing exterior wall cover work in-house,
we can keep costs down while ensuring high-quality work.

Company Introduction

Company Overview神奈川で家の外装・屋根の工事、修理なら一番若くて親切な株式会社翔工務店にお任せください。 株式会社翔工務店はリフォームを通して美しく理想の生活空間を創るお手伝いをしています。外装改修、外壁塗装、雨樋修理清掃、屋根の塗装や重ね葺き葺き変えなどの部分的な修理まで、お客様のどのようなご要望にも全力でお応えします。...

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.!

Possible Subsidies and Grants inMitaka City, Tokyo

The following subsidies may be available in Mitaka City, Tokyo.

1. Long-term Excellent Housing System and Benefits (Tokyo)

• Overview of the Long-term Excellent Housing System
  
  Housing that meets standards for durability, living environment, disaster response, floor area, and maintenance plans is certified as a high-performance residence that can be lived in for a long time.

• Main Benefits of Certification

  • Tax incentives such as income tax and real estate acquisition tax

  • Potential eligibility for various subsidies and reduced interest rates on housing loans

• Information on Subsidy Programs
  You can utilize the national subsidy programs such as the “Child-Rearing Green Housing Support Project” and the “Long-Term Excellent Housing Renovation Promotion Project.”

2. Comparison with Tokyo’s “Tokyo Zero Emission Housing” Program

• What is Tokyo Zero Emission Housing?
  This is a program where the Tokyo Metropolitan Government provides subsidies for the construction of new houses with high energy-saving performance. It includes subsidies for the installation of solar panels and storage batteries, as well as full exemption from real estate acquisition tax.

• Subsidy Amount (Fiscal Year 2025)

  • Level A: Up to 2.4 million yen

  • Level B: 1.6 million yen

  • Level C: 400,000 yen

• Tax Benefits
  Houses that meet certain conditions may be eligible for full exemption from real estate acquisition tax.

3. Comparison of Major Subsidies

Subsidy Programs Related to Tokyo

Program Name	Details	Subsidy Amounts, etc.
Tokyo Zero Emission Housing	Subsidy for new construction based on energy-saving performance	Level A: 2.4 million yen / Level B: 1.6 million yen / Level C: 400,000 yen
Existing Housing Energy Saving Diagnosis and Design Support	Subsidy for energy-saving design and diagnosis of current homes	Check the subsidy rate and upper limit in the application guidelines (Application period: May 22, 2025 – February 16, 2026)
Individual Housing Interest Subsidy	Subsidy for loan interest when rebuilding fire-resistant homes in densely built areas	1% reduction in housing loan interest (for 10 years)

Subsidy Programs by National and Local Governments

• Child-Rearing Green Housing Support Project

  • Eligible: GX-oriented housing, long-term excellent housing, ZEH standard housing

  • Subsidy Amount (Estimated for FY 2025):

    • GX Type: 1,600,000 yen / unit

    • Long-term Excellent: 800,000 yen / unit

    • ZEH Standard: 400,000 yen / unit

    • *Additional costs apply for demolition of old houses (e.g., Long-term Excellent 1,000,000 yen)

• ZEH Support Project (National)

  • Subsidy Amount:

    • ZEH: 550,000 yen / unit

    • ZEH+: 900,000 yen / unit

    • Additional subsidies available for storage batteries, etc.

• Long-term Excellent Housing Reform Promotion Project (for Existing Houses)

  • Subsidy Amount:

    • Evaluation Standard Type: Within 1/3 of the renovation cost (maximum 800,000 yen)

    • Certified Long-term Excellent Housing Type: Similarly within 1/3 (maximum 1,600,000 yen)

    • An additional 500,000 yen for young families and three-generation households

4. Which systems can be combined? Tips for utilization

• Combination Utilization
  Programs like “Tokyo Zero Emission Housing” and “Child-Rearing Green Housing” can be used together depending on the conditions.
  On the other hand, some specific programs may not be used in combination, so it is important to check the conditions for each program.

• Benefits of Certification
  Long-term excellent housing certification offers benefits in multiple areas such as tax incentives, subsidy programs, and loan advantages, making the value of obtaining the certification very high.

• For Renovations and Existing Homes
  By utilizing the “Long-term Excellent Housing Renovation Subsidy” and “Energy Saving Diagnosis and Design Support,” you can improve performance while also receiving subsidies.

Summary

1. Long-term Excellent Housing offers a wide range of benefits such as tax incentives, subsidies, and loan advantages if certified.

2. Tokyo’s “Tokyo Zero Emission Housing” Program provides significant subsidies for new construction aimed at energy-efficient high-performance housing.

3. Utilizing National and Other Programs can greatly reduce the financial burden of building or renovating a home.

4. Combination Conditions Vary by Program, so it is important to check the details and whether combinations are allowed when applying.

For detailed conditions and procedures, please check this website.

Leave exterior wall covering work to Kakeru Koumuten Co., Ltd., the exterior renovation specialists!

This concludes the information about the exterior wall overlay (cover method).

The exterior renovation that significantly improves insulation and offers a stylish look like a new build is limited to exterior wall siding work.
While the cost is higher compared to exterior wall painting, it comes with various benefits and is a recommended exterior renovation.
The important thing is, if you are considering exterior wall overlay 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!

We carry out everything from temporary scaffolding work to roof work and exterior wall renovation work completely in-house. We are confident that our costs, quality, and organization for exterior work are unmatched compared to other companies!
We welcome competitive estimates with confidence!
You will be glad you chose us! We take every request seriously to ensure you feel that way.
Estimates and surveys 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.

We welcome consultations via LINE as well◎

For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

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!