If you are looking for a roof repair contractor in Aoba-ku, Yokohama, come to Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. is a company specializing in roof repairs and leak repairs in Yokohama.
We have handled numerous leak repairs and roof repairs in Aoba-ku.
If you are considering a roof renovation, please feel free to consult with Kakeru Koumuten Co., Ltd.!
We respond broadly to sudden leaks after typhoons and roof repairs based on the age of the building.
If you are in need in Aoba-ku, Yokohama, we can respond as soon as the same day, so please feel free to contact us.
How to Choose a Leak Repair Contractor
There are many leak repair contractors in Yokohama, and you may be unsure which one to choose.
Therefore, when requesting roof repairs and leak repairs, let’s check the following four points.
● Have extensive experience in roof repairs and leak repairs
● Confirm the existence of warranties and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Check if they conduct leak investigations and roof repairs in-house
By confirming the above four points, you will be able to choose a reliable contractor.
Extensive experience in roof repairs and leak repairs
Roof repair contractors often have a website where they showcase their project achievements.
Project achievements may explain the following items, so check if they have performed repairs similar to yours.
Repair details,the process leading to the repair,materials used,repair costs,repair duration, etc.
Additionally, if the repair details are explained in detail with photos, it provides reassurance as a reference when you actually request repairs.
If you are concerned about whether the contractor you are about to hire will respond properly, choose a contractor with extensive repair experience.
Kakeru Koumuten Co., Ltd. specializes in roof and exterior repairs, and we receive many requests for leak repairs.
Kakeru Koumuten’s roof repair case studies in Aoba-ku, Yokohama

A customer living in Aoba-ku, Yokohama contacted us saying, “The roofing material has cracked and fallen onto the balcony, so I would like you to take a look!”
Our Proposal
The existing roofing material is 【Colonial NEO】, which is very prone to cracking and is not suitable for painting. While it is possible to replace only the cracked roofing materials, doing so may put stress on the other roofing materials, causing them to crack as well.
Since the customer mentioned, “I want to live here for a long time” and “I want to improve insulation,” we proposed a roof overlay construction using Super Galtect.
The customer also requested, “If scaffolding is going up, I would like to request exterior wall painting as well,” so we proposed exterior wall painting using the number one heat-insulating paint, Silicon REVO!
Check for Warranty and Aftercare Services
When choosing a leak repair contractor, make sure to check for warranty availability.
Water leak repairs can recur even after a repair has been made, so if you request repairs every time a leak occurs, it can lead to significant expenses.
For this reason, if you choose a contractor that offers a warranty period, you may be able to get repairs done for free within that warranty period.
The warranty period varies depending on the contractor and the type of work, but it is generally set between 1 to 10 years.
Emergency measures or partial repairs often do not come with a water leak warranty.
Additionally, some contractors offer after-sales service separate from the warranty, so be sure to check if the contractor you are considering has warranties and after-sales services.
Kakeru Koumuten Co., Ltd. provides a water leak warranty for roof overlay and roof replacement work.
Similarly, for exterior walls, water leak warranties are included for exterior wall overlay and replacement work as well as joint sealing work.
As part of our aftercare, we send out annual direct mail, allowing for yearly inspections.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting roof renovations or water leak repairs, be sure to obtain estimates from multiple contractors.
Even for the same repair, costs may vary between contractors, as well as warranties and after-sales services.
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.
If a water leak occurs, it’s natural to feel rushed, but
first, perform emergency measures, and if you plan to proceed with repairs, taking your time to consider will likely lead to a satisfactory outcome!
Kakeru Koumuten Co., Ltd. is happy to assist with emergency water leak measures!
Check if the company conducts water leak investigations and roof repairs in-house
Water leaks can sometimes be easily identified, while in other cases, it may take time to pinpoint the source of the leak, requiring knowledge and experience.
Contractors that completely outsource roof repairs and water leak repairs may lack the necessary knowledge and experience, leading to repairs in the wrong areas or suggestions for ineffective water leak repairs.
Additionally, it takes extra time and cost to investigate and then request subcontractors.
By having the knowledge and experience to carry out the work in-house, we can provide responsible and cost-effective leak repairs quickly.
Kakeru Koumuten Co., Ltd. conducts everything from leak investigations to construction in-house!
About the Cost of Leak Repair Work
The table below shows the average repair costs for areas prone to leaks.
|
Repair Details |
Average Cost |
|
Replacement of part of the roofing material |
¥10,000 – ¥20,000 |
|
Roof replacement (re-roofing) |
From ¥500,000 |
|
Roof overlay (cover method) |
From ¥400,000 |
|
Replacement and repair of ridge metal |
From ¥10,000 |
|
Skylight repair |
From ¥10,000 |
|
Exterior wall and joint repairs |
From ¥10,000 |
|
Repair of cap metal |
From ¥10,000 |
|
Waterproofing work for balconies and rooftops |
From ¥80,000 |
For detailed pricing, click here!!
For exterior remodeling in Aoba-ku, Yokohama, click here!
For exterior wall painting in Aoba-ku, Yokohama, click here!!
For roof remodeling in Aoba-ku, Yokohama, click here!
For exterior wall overlay work in Aoba-ku, Yokohama, click here!
About Kakeru Koumuten
Kakeru Koumuten Co., Ltd. is a remodeling company based in Aoba-ku, Yokohama, Kanagawa Prefecture, specializing in roofing, painting, and scaffolding work with complete in-house construction.
By assembling our own temporary scaffolding, we can perform roof repairs quickly and cost-effectively, allowing for prompt leak repairs.
Company Introduction


● We store scaffolding materials!
Since we can set up temporary scaffolding ourselves, we can perform roof repairs quickly.


● We store materials and tools related to roofing and painting work!
We have all the necessary components for leak repairs, allowing us to respond quickly!
Customer Reviews
Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
Contact page for Kakeru Koumuten Co., Ltd. is here!
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 / Oroshimachi, Aoba-ku, Yokohama / Kamiseyamachi, Aoba-ku, Yokohama / Kitashin, Aoba-ku, Yokohama / Kitamachi, Aoba-ku, Yokohama / Gokanmecho, Aoba-ku, Yokohama / Shimoseyama, Aoba-ku, Yokohama / Seyamachi, Aoba-ku, Yokohama / Seya, Aoba-ku, Yokohama / Takemuracho, Aoba-ku, Yokohama / Chuo, Aoba-ku, Yokohama / Nakayashiki, Aoba-ku, Yokohama / Hashido, Aoba-ku, Yokohama / Futatsubashi, Aoba-ku, Yokohama / Hongou, Aoba-ku, Yokohama / Mitsuzaka, Aoba-ku, Yokohama / Minamiseya, Aoba-ku, Yokohama / Minamidai, Aoba-ku, Yokohama / Miyazawa, Aoba-ku, Yokohama / Megurocho, Aoba-ku, Yokohama
Subsidies and Grants Available for Leak Repairs in Aoba-ku, Yokohama
In Aoba-ku, Yokohama, the following subsidies may be available for leak repairs. For details, please contact our company or your local government. (As of February 2025)
This program aims to create a safe city resilient to earthquakes by conducting “earthquake resistance assessments” for wooden private houses in Yokohama. The city dispatches certified “earthquake resistance assessors for wooden houses” to citizens who wish to have an assessment, supporting their earthquake resistance measures.

https://www.city.yokohama.lg.jp/business/bunyabetsu/kenchiku/bosai/taishin/hojokinshienseido/mokutai/taishin/mokushindan.html
The Yokohama City Wooden House Earthquake Renovation Promotion Project is a system where the city subsidizes part of the costs for earthquake renovation work on wooden private residences.
About the Yokohama City Wooden House Earthquake Renovation Subsidy System
https://www.city.yokohama.lg.jp/business/bunyabetsu/kenchiku/bosai/taishin/hojokinshienseido/mokutai/mokukaishu/mokukaishu.html
Features of Seyaku-ku, Yokohama
Seyaku-ku is located on the western side of Yokohama City, an area where nature and a quiet residential environment harmonize, making it an attractive region for those who wish to lead a calm life.
The biggest feature of this district is its rich natural environment, with many green spaces and parks where you can enjoy seasonal landscapes. There are plenty of places to refresh yourself in nature, such as for walking and jogging, making it ideal for those seeking a lifestyle away from the hustle and bustle of the city.
It has developed as a residential area with many single-family homes and apartments, providing a comfortable living environment with wide roads and tranquil streets.
Additionally, it is home to many families and seniors, and with facilities for child-rearing, schools, and lush parks, it is a suitable area for raising children.
Transportation is convenient, with access to Yokohama City center and Tokyo via railways and major roads, making it suitable for travel by car.
Furthermore, the local community is active, with shopping streets and community events that deepen connections among residents, allowing newcomers to settle in with ease. Seyaku-ku, where you can enjoy the conveniences of the city while living in an environment surrounded by nature and tranquility, is an ideal place for families, seniors, and nature lovers.
Kakeru Koumuten Co., Ltd. also serves the Seyaku-ku area of Yokohama.
We have carried out numerous projects in the past and are confident in our services.
Summary
Our company handles many roofing projects in Seyaku-ku, Yokohama.
We are happy to assist with partial roof repairs such as roof overlay work, roof replacement, and leak repairs, as well as other repairs!
“Just a temporary fix for the leak”
“I want to repair the cracked roof”
“I want to implement overall leak prevention measures for the building”
We will provide the best solutions for your specific requests.
Estimates and inspections are, of course, free!
We carry out everything from temporary scaffolding work to roofing and exterior painting completely in-house.
We are confident that our costs, quality, and efficiency in exterior work are unmatched compared to other companies!
We welcome competitive estimates with confidence!
We look forward to your inquiry. Thank you very much.
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!




