If you’re looking for a roof repair contractor in Koganei City, Tokyo, come to Kakeru Koumuten
Kakeru Koumuten is a company specializing in roof repairs and leak repairs.
We have handled numerous leak repairs and roof repairs in Koganei City, Tokyo.
If you are considering a roof renovation, please feel free to consult with Kakeru Koumuten!
We respond broadly to sudden leaks that occurred after a typhoon and roof repairs based on the age of the building, among other services.
For those in Koganei City, 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 contractors for leak repairs in Koganei City, 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
● Check for warranties and aftercare services
● Obtain estimates from multiple contractors (at least three)
● Confirm whether 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 websites that showcase their construction achievements.
The construction results may explain the following items, so let’s check if similar repairs have been conducted on your home.
Repair details,the process leading to the repair,materials used,repair costs,repair duration, etc.
Additionally, having detailed explanations of the repair contents with photos can provide peace of mind 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 Co., Ltd.’s roof repair case studies in Koganei City


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We received an inquiry from a customer living in Koganei City, Tokyo, stating, “A contractor working nearby pointed out issues with my roof, so I would like you to check it!”
Our Proposal
Upon inspection, we found that the existing slate roof had damage and deterioration, so we proposed a roof overlay method! Since the customer wished for roofing materials that would last as long as possible, we recommended the highly durable Super Galtect, which is our most popular option!
Check for Warranty and After-Maintenance
When choosing a leak repair contractor, make sure to check for warranty availability.
Leak repairs can recur even after being fixed once, so if you have to request repairs every time a leak reoccurs, it can lead to significant expenses.
For this reason, if you choose a contractor that offers a warranty period, repairs may be done for free within that warranty period.
The warranty period varies by contractor and type of work, but it is generally set between 1 to 10 years.
Emergency repairs or partial fixes often do not come with a leak warranty.
Additionally, some contractors offer after-services separate from the warranty, so be sure to check if the contractor you are considering has warranties andafter-services.
Kakeru Koumuten Co., Ltd. provides a leak warranty for roof overlay (cover method) and roof replacement work.
Similarly, for exterior walls, a leak warranty is included for exterior wall cover work, replacement work, and joint sealing work.
As part of our aftercare maintenance, we send out annual DM,
allowing for yearly inspections.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting roof renovations or leak repairs, be sure to obtain estimates from multiple contractors.
Even for the same repair, the costs may vary between contractors, as well as the warranties and after-sales services offered.
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 leak occurs, it’s natural to feel rushed, but
first, perform temporary measures, and if construction is needed, taking your time to consider will lead to a satisfactory outcome!
Kakeru Koumuten is happy to assist with emergency leak measures!
Check if the company conducts leak investigations and roof repairs in-house
Leaks can sometimes be quickly identified, while in other cases, it may take time to pinpoint the source, requiring knowledge and experience.
Contractors that completely outsource roof repairs and leak repairs may lack the necessary knowledge and experience, leading to suggestions for repairs in the wrong areas or ineffective leak repairs.
Moreover, having to investigate and then request a subcontractor can incur additional time and costs.
By having the knowledge and experience to conduct work in-house, we can provide prompt and cost-effective leak repairs with accountability.
Kakeru Koumuten conducts leak investigations and construction in-house!
Regarding the costs of leak repair work
The table below shows the average costs for areas prone to leaks.
|
Repair Content |
Average Cost |
|
Replacement of part of roofing material |
10,000 to 20,000 yen |
|
Roof replacement (re-roofing) |
500,000 yen and up |
|
Roof overlay (cover method) |
400,000 yen and up |
|
Replacement and repair of ridge metal |
10,000 yen and up |
|
Skylight repair |
10,000 yen and up |
|
Exterior wall and joint repair |
10,000 yen and up |
|
Repair of cap metal |
10,000 yen and up |
|
Waterproofing work for balconies and rooftops |
80,000 yen and up |
For detailed pricing, 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.
Since we can assemble temporary scaffolding and perform roof repairs in-house,
we can provide quick leak repairs at a reduced cost.
Company Introduction


●We store scaffolding materials!
Since we can set up temporary scaffolding in-house, we can perform quick roof repairs.


●We store materials and tools related to roofing and painting work!
Since we have all the necessary components for leak repairs, we can respond quickly!
Customer Reviews
Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo Metropolis.
Koganei City, Tokyo Area List
Koganei City, Kajinokacho / Koganei City, Sakuracho / Koganei City, Sekinokacho / Koganei City, Nakacho / Koganei City, Nukuiminamicho / Koganei City, Nukuikitamachi / Koganei City, Higashimachi / Koganei City, Honcho / Koganei City, Maebaracho / Koganei City, Midorimachi
Possible Subsidies and Grants for Leak Repairs in Koganei City, Tokyo
In Koganei City, Tokyo, the following subsidies may be available for leak repairs. For details, please contact our company or the respective municipality. (As of February 2025)
Subsidy for Seismic Renovation of Wooden Houses
If a seismic diagnosis of a wooden house determines a comprehensive evaluation score of less than 1.0, a portion of the costs for seismic renovation will be subsidized.
Eligible Applicants
1. Individuals who own a wooden house with two or fewer stories (excluding basements) that was constructed before May 31, 1981, within the city.
2. Individuals who own an existing wooden house where more than half of the total floor area is for residential use (including mixed-use with stores).
3. Individuals who are not in arrears on municipal taxes (special ward taxes).
Subsidy Amount
Seismic renovation: Up to half of the costs incurred (maximum of 600,000 yen).
For details, please contact our company or the respective municipality.
Features of Koganei City, Tokyo
Koganei City is located in the almost central part of Tokyo, in the southwestern part of the Musashino Plateau, about 25 km west of the city center. The JR Chuo Line runs through the center of the city, and the Tokyo Metropolitan Koganei Park spreads out to the north.
The climate is mild, allowing residents to enjoy the changing nature of the four seasons. Transportation access is also excellent, with “Musashi-Koganei Station” and “Higashi-Koganei Station” on the JR Chuo Line, and “Shin-Koganei Station” on the Seibu Tamagawa Line located within the city, making it convenient to access the city center. It takes about 25 minutes to get from Musashi-Koganei Station to Shinjuku Station.
As a tourist spot, there is the “Tokyo Metropolitan Koganei Park,” which features famous cherry blossom spots, barbecue areas, and sports facilities within its vast grounds. Additionally, the “Edo-Tokyo Open Air Architectural Museum” is located within the park, where historical buildings have been relocated, preserved, and exhibited, allowing visitors to view structures from the Edo period to the early Showa period. Furthermore, “Sorosen-en” is a garden with natural forests and a spring water pond, where you can enjoy seasonal landscapes.
Koganei City is a livable town that blends a rich natural environment with historical and cultural charm.
Our company has undertaken many roofing projects in the attractive Koganei City, Tokyo. In addition to roof overlay work and roof replacement, we are happy to assist with partial roof repairs such as leak repairs and other repairs! Please feel free to consult us about any sudden troubles!
Summary
Our company handles many roofing projects in Koganei City.
We are happy to assist with roof overlay work, roof replacement, leak repairs, and other repairs!
“I just need a temporary fix for the leak”
“I want to repair my broken 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 organization for exterior work are unmatched compared to other companies!
We welcome competitive estimates with confidence!
We look forward to your inquiries. 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!




