Hello!
We are Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior wall painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
We would like to introduce our achievements in ‘single-family home exterior wall cleaning’ and ‘exterior painting’ projects carried out in Seya-ku, Yokohama. In this article, you can find details and processes of the exterior renovations performed by Kakeru Koumuten.
Additionally, you can view the construction costs for exterior wall cleaning through the URL provided in this article!!
We also provide detailed explanations of price ranges and construction periods. Please consider this information as a reference for your home’s exterior renovation.
Thank you very much for choosing Kakeru Koumuten!
Construction Data for Seya-ku, Yokohama
| Construction Location |
| Aoba-ku, Yokohama |
| Construction Details |
|
・Exterior Wall Cleaning (Exterior Wall Washing): One Side ・Exterior Painting |
| Background to the Construction |
|
This time, we received an inquiry from a customer in Aoba-ku, Yokohama, stating, “I am concerned about the darkening on the front side of the exterior wall, so I would like to have it cleaned, and I would also like to request painting for the exterior.” We proposed exterior wall cleaning and exterior painting for just one side as per the customer’s request, and they entrusted us with the job! |
| Building |
| Detached house 2 stories Exterior wall: Fiber cement siding |
| Price Range |
| 50,000 to 100,000 yen |
| Construction Period |
| 1 day |
| Completion Month |
| December 2024 |
Exterior Wall Cleaning (Exterior Cleaning) Construction Procedure
1. Preparation
If there are plants or cars nearby, we will take precautions before starting the cleaning! In this case, we took precautions because there were plants from the neighbor nearby!
2. Exterior Wall Cleaning (Exterior Cleaning)
We will spray a special exterior wall cleaning detergent from the top down using a machine that mixes the detergent and a dedicated extendable brush!
The nozzle of the dedicated brush sprays water and detergent, allowing us to reach even three-story buildings! As shown in the photo above, we will also clean the rain gutters and piping!
For exterior wall cleaning, we use gentle water pressure instead of high-pressure washing. The brushes used are specially designed to clean gently, ensuring that dirt is removed without damaging the exterior walls.
Since we only use electric machines, there will be no loud noises or disturbances during the work!
The detergents used are formulated to avoid discoloration of window frames and exterior walls!
We also differentiate the detergents used based on the type of dirt, such as rain stains, blackening, and moss!
* Detergents that are effective against moss can harm or kill plants and trees if they splash, so caution is necessary!
Even if we cannot use a moss-resistant detergent, cleaning is still possible, so please rest assured!
We will thoroughly remove blackening and moss from the exterior walls!
4. Water Washing
After completing the detergent wash for the entire exterior wall, we will proceed to rinse with water from the top down.
We will carefully rinse to ensure no detergent is left behind!
We will thoroughly wash away the detergent!
The exterior wall we cleaned this time had noticeable blackening, but after performing the exterior wall cleaning, the blackening was beautifully removed, giving it a brighter overall impression!
Exterior Painting Construction Procedure
1. High-Pressure Washing
We will thoroughly remove dirt and moss with high-pressure washing!
2. Surface Preparation
3. Primer Coat
4. Middle Coat


5. Top Coat

| Exterior Painting Paint |
International Paint/IP Youheki Coat
|
|---|
Thank you for trusting Kakeru Koumuten Co., Ltd.!
☞Please check out other painting project results from here!
What are the advantages and disadvantages of exterior wall cleaning?
Exterior wall cleaning is a highly cost-effective maintenance method to restore the aesthetics of a building at a low cost. Here are the advantages and disadvantages!
Advantages of Exterior Wall Cleaning
First, let’s introduce the advantages of exterior wall cleaning!
1. The building maintains a clean appearance and looks beautiful
As time passes, dirt, mold, and moss tend to accumulate on exterior walls, but regular cleaning can remove these stains. By performing exterior wall cleaning, the entire building will have a clean and beautiful appearance.
Furthermore, when the exterior of the building looks beautiful, the surrounding environment also appears brighter and cleaner.
Unlike high-pressure washing, exterior wall cleaning can be done without damaging the walls.
2. Low Cost
Since cleaning can be done without setting up temporary scaffolding, it is possible to restore aesthetics at a lower cost compared to exterior wall painting or high-pressure washing!
3. Short Construction Period
Unlike high-pressure washing or exterior wall painting, exterior wall cleaning can generally be completed in just one day!
4. No Noise
Since only electric machines are used, the lack of loud sounds or noise is also an advantage of exterior wall cleaning!
Disadvantages of Exterior Wall Cleaning
On the other hand, there are also disadvantages to exterior wall cleaning!
1. Certain Costs Incurred
First, it should be noted that cleaning incurs certain costs.
If you hire a professional contractor, the cleaning work, the detergents used, and any painting will incur costs, so it is necessary to plan a budget in advance.
Kakeru Koumuten Co., Ltd. offers free estimates, so please feel free to consult with us!
2. Consideration for Surroundings is Necessary
During the cleaning process, there is a possibility that the work may affect the building and the surrounding environment. The detergents and water used for cleaning may splash and dirty nearby cars, plants, and the ground.
Professional contractors will always take care to consider the surroundings during their work, but if you are doing the cleaning yourself and are inexperienced, it is even more important to be mindful of the surrounding environment during the cleaning process.
Therefore, our company conducts preliminary site surveys and greetings to prevent troubles!
If cars are nearby, we will protect them with car seat covers, and we are committed to taking maximum care!
3. Cannot Be Performed on Severely Deteriorated Walls
Exterior walls with severely deteriorated paint may risk peeling off the coating.
If the sealing material in the joints is damaged, it can also lead to leaks, making it impossible to perform the work.
Kakeru Koumuten Co., Ltd. is a company strong in exterior renovations, so we will thoroughly investigate the condition of the exterior walls and joints to confirm whether the work can be performed!
As mentioned above, exterior wall cleaning (exterior wall washing) has its advantages and disadvantages. However, regular cleaning can maintain the cleanliness of the building’s appearance and enhance its durability, so we recommend doing it at the right time!
We also offer carport cleaning and exterior cleaning!

Kakeru Koumuten Co., Ltd. not only provides exterior wall cleaning but also offers carport and exterior cleaning services!
For example, if you’re thinking, “It’s not time for exterior wall painting yet, but I would like to request exterior wall washing and exterior cleaning…” this plan is recommended for you.
One reason why the costs for roof and exterior wall painting can add up is that “scaffolding needs to be set up.” However, with Kakeru Koumuten’s exterior wall cleaning (exterior wall washing), there is no need for scaffolding, so you won’t incur scaffolding costs!!
Of course, partial cleaning such as exterior wall cleaning only, cleaning of one side of the exterior wall only, or exterior cleaning only is also very welcome!
On-site surveys and estimates are free, so please feel free to consult with Kakeru Koumuten!
About Cleaning Costs

| Minimum Charge | 15,000 yen |
|---|---|
| Single-Story House | 550 yen~750 yen/㎡ |
| Two-Story Building | 650 yen~850 yen/㎡ |
| Three-Story Building | 700 yen~880 yen/㎡ |
・We will wash the exterior walls of moss, stains, and rain streaks with a special brush!
⇩For more details on the costs of exterior wall cleaning by Kakeru Koumuten, please check here⇩
Leave Exterior Wall Cleaning in Aoba-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
Our company is based in Aoba-ku, Yokohama, and we have extensive experience in cleaning and washing exterior walls and exteriors in Yokohama, including areas like Aoba-ku.
If the building is relatively new or if the exterior walls are only dirty, often cleaning (washing) alone can restore the aesthetics without the need for painting or replacement.
Additionally, one of the benefits of cleaning is that it can be done at a lower cost compared to painting or replacement work.
If dirt and stains are left unattended, there is a possibility that no matter how strong the chemicals used, the stains may become impossible to remove, so we recommend early cleaning.
Moreover, there are various types of chemicals, and using inappropriate ones for the substrate can lead to discoloration or fading, which can actually decrease the aesthetic appeal.
Kakeru Koumuten Co., Ltd. has rich experience in cleaning and washing numerous exterior walls and exteriors.
We specialize in exterior renovations, so we are happy to assist not only with cleaning but also with exterior wall painting, exterior painting, waterproofing work, and other partial painting projects.
“I want to remove moss from the exterior wall,” “I just want to know the estimate,” “I want to know if this stain can be removed,” if you have any concerns or questions, please feel free to contact us!
We also have pricing plans for exterior wall and exterior work available, so please take a look if you’re interested!
List of Areas in Aoba-ku, Yokohama
Aizawa, Aoba-ku, Yokohama / Akigawa Nishi, Aoba-ku, Yokohama / Akigawa Higashi, Aoba-ku, Yokohama / Akigawa Minami, Aoba-ku, Yokohama / Higashino, Aoba-ku, Yokohama / Higashino-dai, Aoba-ku, Yokohama / Orohoncho, Aoba-ku, Yokohama / Kamiseyamachi, Aoba-ku, Yokohama / Kitashin, Aoba-ku, Yokohama / Kitamachi, Aoba-ku, Yokohama / Gokanmecho, Aoba-ku, Yokohama / Shimoseya, Aoba-ku, Yokohama / Seyacho, Aoba-ku, Yokohama / Seya, Aoba-ku, Yokohama / Takemuracho, Aoba-ku, Yokohama / Chuo, Aoba-ku, Yokohama / Nakayashiki, Aoba-ku, Yokohama / Hashido, Aoba-ku, Yokohama / Futatsubashi-cho, Aoba-ku, Yokohama / Hongō, Aoba-ku, Yokohama / Mitsukyou, Aoba-ku, Yokohama / Minamiseya, Aoba-ku, Yokohama / Minami-dai, Aoba-ku, Yokohama / Miyazawa, Aoba-ku, Yokohama / Meguro-cho, Aoba-ku, Yokohama
・Exterior Painting and Sealing Work Price List
・DIY Painting Plan | For those who want to try painting the roof and exterior walls themselves! We will only set up the scaffolding!
・Construction Menu | Exterior Work Plan | Costs for Exterior, Tile, and Concrete Work
Service Areas
Our company is based in Aoba-ku, Yokohama, and our main service areas are Kanagawa Prefecture and Tokyo.
We can also accommodate some areas in Chiba Prefecture, Yamanashi Prefecture, Shizuoka Prefecture, and Saitama Prefecture, so please feel free to consult with us!
Tokyo
Akishima City / Akiruno City / Adachi Ward / Arakawa Ward / Itabashi Ward / Inagi City / Edogawa Ward / Ome City / Edogawa Ward / Ome City / Ota Ward / Katsushika Ward / Kita Ward / Kiyose City / Kunitachi City / Koto Ward / Koganei City / Kokubunji City / Kodaira City / Komae City / Shinagawa Ward / Shibuya Ward / Shinjuku Ward / Suginami Ward / Sumida Ward / Setagaya Ward / Taito Ward / Tachikawa City / Tama City / Chuo Ward / Chofu City / Chiyoda Ward / Toshima Ward / Nakano Ward / Okutama / Nishitokyo City / Nerima Ward / Hachioji City / Hamura City / Higashikurume City / Higashimurayama City / Higashiyamato City / Hino City / Fuchu City / Fussa City / Bunkyo Ward / Machida City / Mitaka City / Minato Ward / Musashimurayama City / Musashino City / Meguro Ward
Kanagawa Prefecture
Aikou-gun Aikawa Town / Ashigarakami-gun Oi Town / Ashigarakami-gun Kaisei Town / Ashigarakami-gun Nakai Town / Ashigarakami-gun Matsuda Town / Ashigarakami-gun Yamato Town / Ashigarashimo-gun Hakone Town / Ashigarashimo-gun Manazuru Town / Ashigarashimo-gun Yugawara Town / Isehara City / Odawara City / Kamakura City / Kawasaki City / Asao Ward / Saiwai Ward / Takatsu Ward / Tama Ward / Nakahara Ward / Miyamae Ward / Kozu-gun Samukawa Town / Zushi City / Chigasaki City / Nakagun Oiso Town / Nakagun Ninomiya Town / Hadano City / Hiratsuka City / Fujisawa City / Miura-gun Hayama Town / Miura City / Minamiashigara City / Yokosuka City / Yokohama City / Aoba Ward / Asahi Ward / Izumi Ward / Isogo Ward / Kanagawa Ward / Kanagawa Ward / Kanazawa Ward / Konan Ward / Kohoku Ward / Sakae Ward / Seya Ward / Tsuzuki Ward / Tsurumi Ward / Totsuka Ward / Naka Ward / Nishi Ward / Hodogaya Ward / Yokohama City Midori Ward / Yokohama City Minami Ward / Sagamihara City / Sagamihara City Midori Ward / Sagamihara City Minami Ward / Sagamihara City Chuo Ward / Ebina City / Atsugi City
Summary
Above are the construction results for exterior wall cleaning and exterior painting work in Seya-ku, Yokohama.
Exterior wall cleaning can also be done for just one side, as in this case.
If dirt is left unattended, it may become difficult to clean, so caution is necessary!
As mentioned above, we can handle not only exterior wall cleaning but also cleaning for exteriors, concrete floors, carports, and roofs.
Currently, there are still few contractors for exterior wall cleaning, but Kakeru Koumuten Co., Ltd. specializes in exterior wall cleaning, so please leave it to us!
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exteriors, or exterior work, please consult with Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten Co., Ltd. has become a strong remodeling company specializing in exterior renovations, and we carry out everything from temporary scaffolding work to roof work and exterior painting work completely in-house.
When it comes to exterior renovation work, we are confident that we will not be outdone by other companies in terms of “cost, quality, and efficiency”!
We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our cost performance and appropriate proposals that align with our customers’ future life plans!
We want you to think, “I’m glad I asked them!” Therefore, we take every request we receive seriously.
We look forward to your inquiries. Thank you very much.
Helpful information about exterior renovations can be found here!
・【Aoba-ku, Yokohama】|We conducted exterior painting with Yōheki coat and rain gutter replacement work!
・【Aoba-ku, Yokohama】|We performed exterior wall cleaning without the need for scaffolding!
・【Kita-ku, Yokohama】|We performed exterior wall cleaning without the need for scaffolding!
・Painting DIY Plan! For those who want to try DIY roof and exterior wall painting! We will only set up the scaffolding!
・About the cost of roof overlay|Kakeru Koumuten’s roof construction plan!
・About the cost of exterior wall painting|Kakeru Koumuten’s exterior wall painting plan!
・About the cost of leak repairs|Kakeru Koumuten’s leak repair plan!
・About the cost of exterior work, tiles, and concrete flooring|Kakeru Koumuten’s exterior construction plan!
・Latest|About subsidies and reduction systems available for renovations!
・What is Kasagi? We will explain the role and repair methods of Kasagi in detail!
・Renovation Store in Kanagawa Prefecture, Yokohama | What is Roof Overlay (Roof Cover Method)?
LINEConsultations via LINE are also very welcome◎
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!




