If you are looking for an exterior wall siding contractor in Kakeru Koumuten, Naka-ku, Yokohama

Estimates and consultations are free!
We welcome competitive 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 the process of overlaying a new exterior wall over 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.

Although the costs are higher compared to exterior painting, it is a method of exterior wall renovation that has various benefits and is gaining attention year by year.

Why is the exterior wall cover method popular?

We would like to introduce the “5 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, 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 comes with integrated insulation.
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 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 material being double-layered, it effectively prevents rainwater intrusion, significantly enhancing waterproofing.
Applying waterproof paper before installation further increases waterproofing!

Point 5　Improved Aesthetics!!

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-like 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 find a product of interest in the catalog, you can also request cut samples!

What are the points to be careful about when doing exterior wall cover work with metal siding?

Next, we will explain the “three points to be careful about” 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 metal siding cover method 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 a satisfactory construction, if you are considering the metal siding exterior wall cover method, 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 among exterior renovations.
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 type of metal siding as the estimates from other companies.

Proposal Details

We have proposed the 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 a product made of Galvalume steel with heat-insulating fluorine coating, and it is integrated with insulation material, providing high thermal insulation performance. 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 (Aiji Industry/SF-Gal Stage Shine) 　Material: Galvalume steel with heat-insulating fluorine coating 　In-house warranty: 10 years 　Manufacturer warranty: 10 years against fading, 10 years against rust, 10 years against 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. 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 guideline for the costs associated with a 30-tsubo exterior wall cover method.

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 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	Over 40 years	Including tax Approximately 2,500,000 yen (Siding unit price 14,000 yen/m²~)

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 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 always obtain multiple quotes!

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

By confirming the above four points, you will be able to choose a trustworthy contractor.

1. Confirm 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 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 it proposed with the appropriate construction method?

When performing exterior wall cover work, it is necessary to establish a ventilation layer between the existing exterior wall and the new exterior wall material using a method called “ventilation method.”
If you proceed without a ventilation layer and apply it directly, moisture cannot escape, which can lead to mold or corrosion, and may cause peeling or lifting of the exterior wall 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 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 water cut and edge trim will provide peace of mind and help prevent issues.
If there are items of concern 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 battens,” “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 existence of guarantees 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 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 with the contractor you are considering if they provide after-sales service.

Kakeru Koumuten Co., Ltd. always includes a warranty with exterior wall cover work.
We also provide after-maintenance, and we 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.

Even for the same repair, the costs can vary between contractors, as well as the warranties and after-sales services they offer.

Additionally, obtaining multiple estimates makes it easier to negotiate prices.

To request your desired repair contractor at a lower cost, 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 are differences in costs between companies that handle in-house construction and those that outsource to external companies, and issues such as miscommunication with external contractors can easily arise.

Additionally, if problems occur after construction, the response may be slow, or there may be no dealings with external construction companies, leading to potential troubles.
Being able to respond immediately when something happens is one of the reasons why companies that perform in-house construction are recommended!

About Kakeru Koumuten

Kakeru Koumuten Co., Ltd. is a remodeling company based in Aoba-ku, Yokohama, Kanagawa Prefecture, specializing in roofing, exterior wall work, and scaffolding work with complete in-house construction.
Since we can assemble temporary scaffolding and perform exterior wall cover work in-house,
we can provide high-quality construction at a reduced cost.

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 in Naka-ku, Yokohama

The following subsidies may be available in Naka-ku, Yokohama.

“Reiwa 6th Year Energy-Saving Housing Relocation Subsidy Program (Renovation Type)” in Yokohama

Requirements for Renovation Type

1. Eligible Housing：

   • Renovations that improve the energy-saving performance of existing houses (single-family homes and multi-family dwellings)
   • The renovated house must ensure energy-saving performance of ZEH level or higher

2. Eligible Applicants：

   • Households with children (households with children under 18) or young couples (at least one spouse under 40 years old)

3. Eligible Works：

   • Insulation renovations (exterior walls, roofs, floors, windows, etc.)
   • Installation of high-efficiency equipment (energy-saving water heaters, solar power generation, etc.)

Subsidy Rate and Maximum Subsidy Amount

Target	Subsidy Rate	Maximum Subsidy Amount
Single-family homes	1/3	1,000,000 yen
Multi-family residences (apartments)	1/3	500,000 yen

* The subsidy applies to one-third of the renovation costs that meet energy-saving standards.

Points to Receive Subsidy

• You must apply to Yokohama City in advance and pass the review.
• Renovations to improve the insulation performance of the home are essential.
• Proof of energy-saving performance (such as energy consumption performance calculation documents) is required.

For more details, please check the official website of Yokohama City.

Leave your exterior wall cover work to Kakeru Koumuten, the exterior renovation specialists!

The above is about the exterior wall cover method.

For exterior renovations that significantly improve insulation and provide a stylish look like a new build, only exterior wall siding work is available.
The cost is higher compared to exterior wall painting, but it offers various advantages and is a recommended exterior renovation.
The important thing is, if you are considering exterior wall cover 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 with Kakeru Koumuten Co., Ltd. in Yokohama!

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 are unmatched in exterior work 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 this way.
Estimates and surveys are free!

If our construction plan is inferior to other companies, please feel free to decline!
You can rest assured that we do not charge any cancellation fees or travel expenses!

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

Consultations via LINE are also welcome◎

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！

 

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