If you are looking for an exterior wall siding contractor in Kakeru Koumuten, Musashimurayama City, Tokyo

Kakeru Koumuten is based in Tokyo and has handled many 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”
“A beautiful finish like a new building that cannot be achieved with exterior wall painting”

Exterior wall cover projects are gaining attention year by year.
Here, we will also introduce case studies, benefits, precautions, and costs!

For customers considering exterior wall siding in Musashimurayama City, Tokyo, this will definitely be helpfulso please take a look!

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

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 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 wall cover method are generally lightweight and durable metal siding.

While the costs are higher compared to exterior wall 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 have received positive feedback for Kakeru Koumuten’s exterior wall cover method!

Point 1 Super high durability!!

Metal siding offers an overwhelmingly high expected durability compared to exterior wall 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 strengths!
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 comes with integrated insulation materials.
Moreover, by installing battens before the metal siding is applied 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 wall painting, manufacturer warranties are generally not included.
Metal siding comes with solid manufacturer warranties, such as coating and perforation guarantees, making it a reassuring choice 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 build, 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 that match the atmosphere of your building and your personal preferences!
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 points to be aware of when doing exterior wall cover work with metal siding?

Next, we will explain the “three points to be aware of” 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 variation in the estimated costs, to ensure you have no regrets about the work,
if you are considering the exterior wall cover method with metal siding, make sure to get estimates from three or more companies and review the details carefully!

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 drawbacks.
If noticeable scratches occur and they are a concern, you can request repairs from a specialized repair contractor!

Point 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 two to three 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

BEFORE

AFTER

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.
You had several preferred metal sidings, so we created separate estimates for each!

You entrusted us with the metal siding “Aijii Industry/SF-Gal Stage Shine”!
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 to 2,100,000 yen
Construction Period
 Approximately 3 weeks
Existing Exterior Material/New Exterior Material

 Existing exterior: ALC
 New exterior: Metal siding (Aijii Industry/SF-Gal Stage Shine)
 Material: Galvalume steel with heat-insulating fluorine coating
 In-house warranty: 10 years
 Manufacturer warranty: 10 years for color fading, 10 years for red rust, 10 years for perforation
 Furring strips: Made of resin

1. Painting of Auxiliary Parts

We will first paint the areas not covered by wall siding (such as eaves, gables, and fascia). To match the durability of the siding, we recommend using high-durability paints such as inorganic or fluorine types.

2. Removal of Equipment

We will temporarily remove any obstacles to the siding, such as rain gutters and air conditioning ducts.

3. Substrate Adjustment

If there is significant deterioration, we will perform sealing of the joints and adjust the substrate if the exterior wall is warped.

4. Waterproof Paper Installation (may not be necessary)

We will apply a highly breathable moisture-permeable sheet over the entire exterior wall. If the building is over 25 years old or shows significant deterioration, we recommend installing a waterproof sheet, but if there are no issues, we may proceed without it.

5. Installation of Battens

We will install battens over the entire exterior wall. The battens will be fixed at intervals of 455 mm, and we will install wider boards around the windows. If the siding used is horizontal, the battens will be installed vertically, and if the siding is vertical, the battens will be installed horizontally.

6. Metal Work Processing

We will process and install corner bases, end caps, and foundation water-cutting metal.

7. Main Construction

Finally, we will cut the siding and secure it with screws from the bottom up. Once the siding installation is complete, we will install joint covers and corners. We use stainless steel screws for fastening the siding materials!

8. Sealing at Various Locations

We will apply sealing to areas that require waterproofing. For sealing materials, we recommend using high-durability sealants like Auton Exceed or SR Seal H100, which can be expected to last nearly 30 years if the colors match.

9. Reinstallation of Equipment

We will reinstall the removed rain gutters and air conditioning ducts. If the rain gutter brackets are of the driven type, we may change them to the screw type.

10. Completion

Finally, we will conduct cleaning and a review to mark the completion.

About the Costs of Exterior Wall Covering Work

This is a guideline table for the costs associated with exterior wall cover work.
It provides an estimate for the cost of performing a wall cover 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/㎡~)
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

There are fewer contractors that handle exterior wall 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 estimates 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 presence of warranties and aftercare services

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 needs?

Check if the proposed materials meet your requirements, such as durability and insulation!
Since there are various types of metal siding, such as cost-effective siding and insulation-focused siding, make sure the siding 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 wall and the new siding material using a method called “ventilation method.”
If you apply the siding directly without a ventilation layer, moisture cannot escape, leading to mold and corrosion, or potentially causing peeling and lifting of the siding material.
Check if the proposed construction 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.
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 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 “type of furring strips,” “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 the recommended fastener.

2. Confirm the presence of warranties and aftercare services

When choosing an exterior wall cover contractor, be 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 for the company’s 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 period is typical.

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 offer after-maintenance and send out annual DM, so if you wish, inspections can be conducted every year.

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 supplies!

4. Confirm whether the company performs exterior wall cover work in-house

There will be cost differences 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 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 quickly when issues arise is one of the reasons why companies that perform the work in-house are recommended!

About Kakeru Koumuten

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

横浜市青葉区のショールーム

 

第一資材置き場

Kakeru Koumuten Co., Ltd. First Material StorageKakeru Koumuten Co., Ltd.
● We store scaffolding materials!
Since we can set up temporary scaffolding in-house, we can provide high-quality exterior renovations at a reduced cost!

第二資材置き場

Kakeru Koumuten Co., Ltd. Second Material Storage
● We store materials and tools related to exterior construction and painting work!
We also store tools and materials for the roof overlay (cover method)!

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 Area

Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo Metropolis.

Click here for inquiries to Kakeru Koumuten Co., Ltd.!

Areas in Musashimurayama City, Tokyo

Inadaira, Enoki, Ominami, Gakuen, Kishi, Zambori, Shinmei, Chuo, Nakato, Nakahara, Honcho, Mitsuki, Mitsufuji, Midorigaoka

Possible Subsidies and Grants in Musashimurayama City, Tokyo

The following subsidies may be available in Musashimurayama 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, unit 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 benefits such as income tax and real estate acquisition tax

    • Possibility of being eligible 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 homes 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 fully exempt from real estate acquisition tax.

3. Comparison of Major Subsidies

Subsidy Programs Related to Tokyo

System 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 upper limits (Application period: May 22, 2025 – February 16, 2026)
Individual Housing Interest Subsidy Subsidy for loan interest when rebuilding fire-resistant houses in densely wooded areas Reduce housing loan interest by 1% (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 charges apply for the removal 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 and more

  • Long-term Excellent Housing Renovation Promotion Project (for existing homes)

    • Subsidy amount:

      • Evaluation standard type: within 1/3 of renovation costs (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 systems may not be used in combination, so it is important to check the conditions for each system.

  • Benefits of Certification
    Long-term excellent housing certification provides 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, including 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. Conditions for combination 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 your 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 building 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 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 we will not be outdone in terms of cost, quality, and efficiency compared to 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.

We welcome inquiries via LINE as well◎

LINE

LINE

We are also updating our Instagram regularly◎ Please follow us◎

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神奈川で屋根・雨樋・外装の工事、修理なら
株式会社翔工務店へ

株式会社翔工務店は平均年齢20代後半の若い会社ですが、技術はどこにも負けていません。

いちばんの強みは、足場工事、屋根工事、塗装工事とすべて自社で行えること。一般には分業されるこの業界にあって、一式で頼めるので管理に手間がかからず、コストも抑えることが出来ます。何より、トラブルがあればすぐにかけつけます!

自信をもって、宣言できます。私たちは、神奈川で一番若くて親切なリフォーム屋です!