If you are looking for an exterior wall siding contractor in Kakeru Koumuten, Nishitama-gun, Tokyo

This will definitely be useful for customers considering exterior wall siding in Nishitama-gun, TokyoPlease take a look!

The most important thing to consider when thinking about exterior wall siding is “getting multiple estimates”!
Let’s obtain at least three estimates from exterior renovation companies that cover Nishitama-gun!

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 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 popular?

Here are the “five points” that Kakeru Koumuten’s exterior wall cover method is highly praised for!

Point 1　Super high durability!!

Metal siding offers significantly higher durability compared to exterior painting.
Made of Galvalume steel, SGL steel, and 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.
Moreover, by installing battens before the metal siding installation to create a ventilation layer, the insulation performance is 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 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 a brand-new construction, which is impossible to achieve 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 of the building!
Major manufacturers include “Aiji Giken“, “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 cautious about” when performing exterior wall cover work using metal siding!

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 contractors have little experience, which can lead to frequent 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, be 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 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 type of exterior renovation.
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. 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 a roof overlay method using metal siding as per your request. Since you had several preferred types of metal siding, we have created separate estimates for each! You entrusted us with the “Aiji Industry/SF-Gal Stage Shine” metal siding! The above siding is made of Galvalume steel with heat-insulating fluorine coating, and it is integrated with insulation material, providing excellent thermal insulation. 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 Industry/SF-Gal Stage Shine) 　Material: Galvalume steel with heat-insulating fluorine coating 　In-house warranty: 10 years 　Manufacturer warranty: Fading 10 years, rust 10 years, perforation 10 years 　Furring strips: Made of resin

1. Painting of Attached 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 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 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	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.
Please note that this is just 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 difficult to find a reputable contractor, such as “where should I request?”
The most important thing in choosing a contractor and obtaining a quote is to definitely obtain multiple quotes!

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

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 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, make sure the siding proposed aligns with 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 method.”
If you skip creating a ventilation layer and directly apply the material, moisture cannot escape, which can lead to mold, corrosion, or peeling and lifting of the exterior wall material.
Check whether the proposed construction is appropriate!

・Are the quantities and construction details clearly stated?

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 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, ask for the reason they are not included!

・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 can 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 an exterior wall cover contractor, 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 check if 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-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 desired, annual inspections can be arranged.

Warranty and Payment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.

Even for the same repair, the costs may vary between contractors, and the 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, 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

Companies that handle the work in-house versus those that outsource to external companies will have different costs, and there is a higher likelihood of miscommunication and other issues with external contractors.

Furthermore, if problems arise after construction, the response may be slow, or there may be no dealings with the external construction company, leading to further complications.
Being able to respond immediately when issues arise 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 construction.

Company Introduction

Corporate Profile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 Area

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 in Nishitama District, Tokyo

The following subsidies may be available in Nishitama District, 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, unit area, and maintenance plans is certified as a high-performance home that can be lived in for a long time.

• Main Benefits of Certification

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

  • There is a possibility of being eligible for various subsidies and interest rate reductions 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?
  
  A program where the Tokyo Metropolitan Government provides subsidies for the construction of new homes with high energy-saving performance. It also 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 the conditions may be fully exempt from real estate acquisition tax.

3. Comparison of Major Subsidies

Tokyo-related Subsidy Programs

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 for current homes	Check the application guidelines for subsidy rates and maximum amounts (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	Reduce housing loan interest by 1% (for 10 years)

Subsidy Programs by the 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 FY2025):

    • GX Type: 1,600,000 yen / unit

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

    • ZEH Standard: 400,000 yen / unit

    • *Additional charges 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 for storage batteries and more

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

  • Subsidy Amount:

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

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

    • An additional 500,000 yen for young families and multi-generational 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 provides benefits in various areas such as tax incentives, subsidy programs, and loan advantages, making the value of obtaining this 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 when certified.

2. Tokyo’s “Tokyo Zero Emission Housing” Program provides significant subsidies when aiming for energy-efficient high-performance housing in new constructions.

3. By also utilizing national and other programs, you can greatly reduce the financial burden of building or renovating a home.

4. Since the conditions for combination vary by program, it is important to check the details of the programs and whether they can be used together at the time of application.

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 about the exterior wall overlay method.

The exterior renovation that significantly improves insulation and achieves a stylish look like a new building is 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 an exterior wall overlay project, 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 entirely in-house. We are confident that we will not be outdone by other companies in terms of cost, quality, and efficiency 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 that of other companies, please feel free to decline!
Rest assured that we do not charge any cancellation fees or travel expenses!

We look forward to your inquiries. Thank you very much.

We welcome inquiries 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!