Leave Your Exterior Wall Covering Work in Sakae-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
If you are looking for an exterior wall siding contractor in Aoba-ku, Yokohama, contact Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. is based in Yokohama 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”
“Beautiful finish like a new building 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, precautions, and costs!
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 a construction method that overlays a new exterior wall on top of the existing exterior wall.
It can be applied to various types of exterior walls, including 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 wall renovation that has various benefits and is gaining attention year by year.
Why is the exterior wall cover method so popular?
Here are the “5 points” that make Kakeru Koumuten Co., Ltd.’s exterior wall cover method highly regarded!
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, 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 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 exterior painting often comes with in-house warranties from various contractors, manufacturer warranties are generally not included.
Metal siding, however, 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, greatly enhancing waterproofing.
Applying waterproof paper before installation further increases waterproofing!
Point 5 Enhanced Aesthetic Appeal!!
Various designs such as wood grain and tile patterns
Metal siding allows for a finish that resembles a brand-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 Industry, Keimyuu, Nichiwa, and Asahi Tostem, each offering various 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 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, 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 exterior wall cover method with metal siding, make sure to get 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 disadvantages.
If noticeable scratches occur and are a concern, you can request repairs from a specialized repair contractor!
Caution 3 Long construction period
Exterior wall cover work can be considered the most extensive renovation among exterior remodeling projects.
While exterior painting typically takes about 2 to 3 weeks, the construction period for exterior wall cover work can often approach one 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 metal sidings, we created separate estimates for each one! You entrusted us with the “Aijii 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 Additional 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 table of estimated costs for exterior wall cover work.
It serves as a cost estimate for performing the exterior wall cover method on a building with a floor area of 30 tsubo.
The cost of the exterior wall cover work will be determined by the following calculation:
Exterior wall area (㎡) × Siding unit price + Equipment removal and installation cost + Additional painting cost = 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 attached parts and windows to be painted, as well as the equipment to be removed and reattached.
Please note that this is just 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 when choosing a contractor or getting an estimate is to always obtain multiple estimates!
For this reason, when requesting exterior wall cover work, let’s check the following four points.
1. Check the contents and materials of the estimate
2. Confirm the existence of guarantees and aftercare
3. Obtain multiple estimates from several 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 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 that the siding proposed meets 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 do not create a ventilation layer and directly apply it, moisture cannot escape, leading to mold or corrosion, and may result in 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 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 drainage and edge lengths will provide peace of mind and help prevent issues.
If there are items of concern that are not included in the estimate, check 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, the siding fasteners are screws, and the overall cost will vary between iron and stainless steel.
While iron may seem 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, 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 if 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 term 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 offer after-maintenance services 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 a lower price, obtaining estimates from multiple contractors is essential.
When comparing estimates, be sure to 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 in-house construction and those that outsource to external companies, and issues such as miscommunication with external contractors are more likely to occur.
Additionally, if problems arise after construction, responses 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 work at a reduced cost.
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!
We also store tools and materials for the exterior wall cover method!
Customer Reviews
Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
Click here for inquiries to Kakeru Koumuten Co., Ltd.!
Sakae-ku, YokohamaArea List
Iijima-cho, Sakae-ku, Yokohama / Inuyama-cho, Sakae-ku, Yokohama / Otsuki, Sakae-ku, Yokohama / Kasama-cho, Sakae-ku, Yokohama / Kasama, Sakae-ku, Yokohama / Kajigaya-cho, Sakae-ku, Yokohama / Kajigaya, Sakae-ku, Yokohama / Katsuradai Kita, Sakae-ku, Yokohama / Katsuradai Naka, Sakae-ku, Yokohama / Katsuradai Nishi, Sakae-ku, Yokohama / Katsuradai Higashi, Sakae-ku, Yokohama / Katsuradai Minami, Sakae-ku, Yokohama / Katsura-cho, Sakae-ku, Yokohama / Kanai-cho, Sakae-ku, Yokohama / Kamigo-cho, Sakae-ku, Yokohama / Kamino-cho, Sakae-ku, Yokohama / Kamei-cho, Sakae-ku, Yokohama / Kouta-cho, Sakae-ku, Yokohama / Kosugegaya-cho, Sakae-ku, Yokohama / Kosugegaya, Sakae-ku, Yokohama / Koyamadai, Sakae-ku, Yokohama / Shodō, Sakae-ku, Yokohama / Tayata-cho, Sakae-ku, Yokohama / Nakano-cho, Sakae-ku, Yokohama / Nagao-dai-cho, Sakae-ku, Yokohama / Nagakura-cho, Sakae-ku, Yokohama / Naganuma-cho, Sakae-ku, Yokohama / Nonanazato, Sakae-ku, Yokohama / Kashiyou, Sakae-ku, Yokohama / Higashi Kamigo-cho, Sakae-ku, Yokohama / Hongōdai, Sakae-ku, Yokohama / Motohashi, Sakae-ku, Yokohama / Wakatake-cho, Sakae-ku, Yokohama
Possible Subsidies and Grants in Sakae-ku, Yokohama
The following subsidies may be available in Sakae-ku, Yokohama.
Yokohama City’s “2024 Energy-Saving Housing Relocation Subsidy Program (Renovation Type)”
Renovation Type Requirements
-
Targeted Housing:
- Renovations to improve the energy-saving performance of existing homes (single-family and multi-family residences)
- Ensuring that the renovated home achieves energy-saving performance of ZEH standards or higher
-
Targeted Recipients:
- Households with children (households with children under 18 years old) or young couples (either spouse is under 40 years old)
-
Targeted 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
| Type | 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 up to 1/3 of the renovation costs that meet energy-saving standards
Points for Receiving Subsidies
- You must apply to Yokohama City in advance and pass the review
- Renovations to improve the thermal insulation performance of the house 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.
For exterior wall cover work, trust the exterior renovation specialists at Kakeru Koumuten!
This concludes the information on the exterior wall cover method.
Exterior renovations that significantly improve insulation and provide a stylish look like new construction are 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 that if you are considering exterior wall cover work, you must 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 in Yokohama!
We carry out everything from temporary scaffolding work to roof work and exterior wall renovation work entirely in-house. We are confident that our costs, quality, and efficiency in exterior work are unmatched compared to other companies!
We welcome competitive estimates!
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!
Please rest assured that we do not charge any cancellation fees or travel expenses!
We look forward to your inquiries. Thank you very much.
・【Aoba-ku, Yokohama】|Exterior Cleaning|We performed a clear coating after chemical cleaning!
・【Miyamae-ku, Kawasaki】|Wall Cleaning|We conducted wall cleaning without the need for scaffolding!
・【Kohoku-ku, Yokohama】|Wall Cleaning|We conducted wall cleaning without the need for scaffolding!
・【Ota-ku, Tokyo】|Wall Cleaning|We conducted wall cleaning without the need for scaffolding at a senior facility!
・【Katsushika-ku, Tokyo】|Wall Cleaning|We conducted wall cleaning without the need for scaffolding at an apartment!
・DIY Painting Plan! For those who want to try painting the roof and exterior walls by themselves! We will only set up the scaffolding!
・Introducing roofing materials that cannot be painted or are not recommended! Roof painting is a no-go!
・What is the market price for roof remodeling? Types of construction and how to choose a contractor
・Introducing construction methods according to the type of roof work and its degradation status!
・Latest! Grants and subsidies available for remodeling, and reduction systems!
・About the costs of exterior painting and sealing work plans | This is the exterior painting construction plan!
・Renovation store in Yokohama, Kanagawa Prefecture | What is roof overlay (roof cover method)?
Consultations via LINE are also very welcome◎
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!




