目次
- 1 If you are looking for a roof repair contractor in Nakano-ku, Tokyo, come to Kakeru Koumuten
- 1.1 How to Choose a Leak Repair Contractor
- 1.2 About the Cost of Rain Leak Repairs
- 1.3 About Kakeru Koumuten
- 1.4 Customer Reviews
- 1.5 Service Areas
- 1.6 Subsidies and Grants for Leak Repairs in Nakano-ku, Tokyo
- 1.7 Conclusion
If you are looking for a roof repair contractor in Nakano-ku, Tokyo, come to Kakeru Koumuten
Kakeru Koumuten is an exterior renovation company specializing in roof repairs and leak repairs.
We have handled numerous roof and leak repairs in Nakano-ku, Tokyo.
If you are considering a roof renovation, please consult with Kakeru Koumuten!
We respond widely to sudden leaks that occur after typhoons and roof repairs based on the age of the building.
For those in Nakano-ku, 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 Nakano-ku, 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 and leak repairs
● Confirm the presence 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 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 performed on your home.
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 peace of mind as it can serve 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 rain leak repairs.
Examples of rain leak repairs by Kakeru Koumuten Co., Ltd. in Nakano-ku
Our Proposal
This time, since you requested re-roofing work, we proposed using the Hirambi 220 roof material with a horizontal installation method.
This roofing material excels in finish, durability, sound insulation, and wind resistance, and is lighter compared to other roofing materials, which reduces the sway during earthquakes, making it a good earthquake countermeasure.
Check for Warranty and Aftercare Services
When choosing a leak repair contractor, make sure to check for warranty availability.
Repairing leaks can lead to recurring issues, and if you request repairs every time a leak reoccurs, it can result in significant expenses.
For this reason, if you choose a contractor that offers a warranty period, you may be able to have repairs done for free within that warranty period.
The warranty period varies by contractor and the 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-service separate from the warranty, so it’s important to check if the contractor you are considering has warranties and after-service options.
Kakeru Koumuten Co., Ltd. provides a leak warranty for all roof overlay and roof replacement work.
Similarly, for exterior walls, a leak warranty is included for exterior wall overlay and replacement work, as well as for joint sealing work.
As part of our after-maintenance, we send out annual direct mail, allowing for yearly inspections.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting roof renovations or leak repairs, be sure to get estimates from multiple contractors.
Even for the same repair, costs can vary between contractors, as well as warranties and after-service options.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at the best possible price, obtaining estimates from multiple contractors is essential.
If a leak occurs, it’s natural to feel anxious, but
first, perform emergency measures, and if you decide to proceed with repairs, taking your time to consider will help ensure you don’t have regrets about the work!
Kakeru Koumuten Co., Ltd. is happy to assist with emergency leak repairs!
Check if the company conducts leak investigations and roof repairs in-house
Leaks can sometimes be easily identified, while in other cases, pinpointing the cause can be challenging and requires knowledge and experience.
Contractors that completely outsource roof repairs and leak repairs may lack the necessary knowledge and experience, leading to repairs of incorrect areas or proposals for ineffective leak repairs.
Additionally, requesting subcontractors after conducting an investigation incurs extra time and costs.
By having the knowledge and experience to carry out the work in-house, we can provide responsible and prompt rain leak repairs at a reduced cost.
Kakeru Koumuten Co., Ltd. conducts everything from rain leak investigations to construction in-house!
About the Cost of Rain Leak Repairs
The table below shows the average repair costs for areas prone to rain leaks.
|
Repair Details |
Average Cost |
|
Replacement of part of 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 |
|
Repair of exterior walls and joints |
From ¥10,000 |
|
Repair of coping metal |
From ¥10,000 |
|
Waterproofing work for balconies and rooftops |
From 80,000 yen |
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 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 accepts requests throughout Kanagawa Prefecture and Tokyo.
Contact page for Kakeru Koumuten Co., Ltd. is here!
List of Nakano-ku Areas
Arai, Nakano-ku, Tokyo / Ekoda, Nakano-ku, Tokyo / Ebara-cho, Nakano-ku, Tokyo / Kamisagiya, Nakano-ku, Tokyo / Kamitakada, Nakano-ku, Tokyo / Saginomiya, Nakano-ku, Tokyo / Shiratori, Nakano-ku, Tokyo / Chuo, Nakano-ku, Tokyo / Nakano, Nakano-ku, Tokyo / Numabukuro, Nakano-ku, Tokyo / Nogata, Nakano-ku, Tokyo / Higashi-Nakano, Nakano-ku, Tokyo / Honcho, Nakano-ku, Tokyo / Matsugaoka, Nakano-ku, Tokyo / Maruyama, Nakano-ku, Tokyo / Minamidai, Nakano-ku, Tokyo / Yamato-cho, Nakano-ku, Tokyo / Yayoi-cho, Nakano-ku, Tokyo / Wakamiya, Nakano-ku, Tokyo
Subsidies and Grants for Leak Repairs in Nakano-ku, Tokyo
In Nakano-ku, Tokyo, the following subsidies may be available for leak repairs. For details, please contact our company or your local government. (As of February 2025)
Subsidy for Seismic Reinforcement Work on Wooden Houses
Requirements for Eligible Houses
- Seismic reinforcement must be performed on wooden houses built or expanded before May 31, 1981, that are two stories or less using traditional wooden construction methods.
- The upper structure evaluation score from a simple seismic diagnosis and seismic diagnosis conducted using Nakano-ku’s subsidy system must be less than 1.0.
- The exterior walls and eaves of the house must be renovated to have fire resistance performance appropriate for the area.
- Openings in exterior walls located in areas at risk of fire spread must be fitted with metal sashes and wire glass, among other specifications.
- A contract for seismic reinforcement work must be concluded after the subsidy grant decision.
Requirements for Eligible Individuals
- Property owners
- Individuals who are not in arrears on the special ward tax and property tax for the eligible house
Subsidy Amount
Subsidy ratio: 50% of eligible expenses
Maximum amount: 1.5 million yen
Conclusion
Our company handles many roofing projects in Nakano-ku.
We are happy to assist with partial roof repairs such as roof overlay work, roof replacement, and leak repairs, as well as 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 roof construction and exterior painting entirely in-house.
We are confident that our costs, quality, and efficiency in exterior work surpass those of 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!




