If you are looking for a roof repair contractor in Bunkyo-ku, Tokyo, contact Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. is a company specializing in roof repairs and leak repairs as part of exterior renovations.
We have handled numerous leak repairs and roof repairs in Bunkyo-ku, Tokyo.
If you are considering a roof renovation, please feel free to consult with Kakeru Koumuten Co., Ltd.!
We handle a wide range of issues, from sudden leaks after typhoons to roof repairs based on the age of the building.
For those in need in Bunkyo-ku, Tokyo,
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 Bunkyo-ku, and you may be unsure which one to choose.
Therefore, when requesting roof repairs or leak repairs, be sure to check the following four points.
● They should have extensive experience in roof repairs and leak repairs.
● Confirm whether they offer 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 websites that showcase their work history.
On their project records, they may explain the following items, so check if they have performed repairs similar to yours.
Repair details,the history leading up to the repair,materials used,repair costs,repair duration, etc.
Additionally, if they provide detailed explanations of the repair work with photos, it can give you peace of mind as a reference when you 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, so we receive many requests for leak repairs.
Examples of Roof Repairs by Kakeru Koumuten Co., Ltd. in Bunkyo-ku
| Construction Location |
| Bunkyo-ku, Tokyo |
| Construction Details |
| Temporary Scaffolding Installation Roof Replacement Work |
| Inquiry Details |
| A customer living in Bunkyo-ku, Tokyo contacted us saying, “I was informed by a visiting contractor about the deterioration of my roof, so I would like you to check it!” |
| Materials Used |
| New Roofing Sheet: Tajima Roofing / Tadi Self New Roofing Material: Hiranbi |
| Price Range |
| 700,000 yen – 800,000 yen |
| Construction Period |
| Approximately 7 days |
| Completion Month |
| December 2022 |
Our Proposal
This time, we proposed a roof replacement project as the deterioration of the roof seemed likely to lead to leaks.
The roofing material we suggested is Inagaki Shouji/Hiranbi 220, which is characterized by its resistance to rust and lightweight properties.
Check for Warranty and After-Service Availability
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 reappears, it can lead to significant expenses.
For this reason, contractors that offer a warranty may provide free repairs within the warranty period.
The warranty period varies by contractor and the nature of the work, but it typically ranges from 1 to 10 years.
Emergency measures or partial repairs often do not come with a leak warranty.
Additionally, some contractors offer after-service separate from the warranty, so be sure to check if the contractor you are considering has a warranty andafter-service.
Kakeru Koumuten Co., Ltd. provides a leak warranty for both roof overlay and roof replacement projects.
Similarly, exterior wall overlay and replacement projects, as well as joint sealing work, also come with a leak warranty.
As part of our after-service, we send out annual direct mail, allowing for inspections each year.
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 work, the costs may vary between contractors, and there may be differences in warranties and after-sales service.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired contractor at a lower price, it is essential to obtain estimates from several companies.
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 regret-free project!
Kakeru Koumuten is happy to assist with temporary measures for leaks!
Check if the company conducts leak investigations and roof repairs in-house
Leaks can sometimes be easily identified, while in other cases, it may take time to pinpoint the cause, requiring knowledge and experience.
Companies that completely outsource roof repairs and leak repairs to subcontractors may lack the necessary knowledge and experience, leading to repairs in the wrong areas or suggestions for ineffective leak repairs.
Moreover, relying on subcontractors after an investigation incurs additional time and costs.
By having the knowledge and experience to perform the work in-house, responsible and cost-effective leak repairs can be completed quickly.
Kakeru Koumuten conducts everything from leak investigations to construction in-house!
About the costs of leak repair work
The table below shows the average costs for areas prone to 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/repair of roof ridge metal |
From 10,000 yen |
|
Skylight repair |
From 10,000 yen |
|
Exterior wall and joint repair |
From 10,000 yen |
|
Cap flashing repair |
From 10,000 yen |
|
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 reduced costs.
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 materials for leak repairs, allowing us to respond quickly!
Customer Reviews
Service Area
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
Contact page for Kakeru Koumuten Co., Ltd. is here!
Bunkyo-ku, TokyoArea List
Bunkyo-ku Otsuka / Bunkyo-ku Otowa / Bunkyo-ku Kasuga / Bunkyo-ku Koishikawa / Bunkyo-ku Koraku / Bunkyo-ku Kohinata / Bunkyo-ku Suidō / Bunkyo-ku Sekiguchi / Bunkyo-ku Sengoku / Bunkyo-ku Sendagi / Bunkyo-ku Nishikata / Bunkyo-ku Nezu / Bunkyo-ku Hakusan / Bunkyo-ku Honkomagome / Bunkyo-ku Hongo / Bunkyo-ku Mukogaoka / Bunkyo-ku Mejirodai / Bunkyo-ku Yayoichi / Bunkyo-ku Yushima
Subsidies and Grants Available for Roof Leak Repairs in Bunkyo-ku, Tokyo
In Bunkyo-ku, Tokyo, the following subsidies may be available for roof leak repairs. For details, please contact us or your local government. (As of February 2025)
Bunkyo-ku Earthquake Resistance Renovation Grant
-
Eligible Buildings
- Residential buildings and condominiums constructed before May 31, 1981
- Single-story or two-story wooden houses built between June 1, 1981, and May 31, 2000
- Buildings that do not meet earthquake resistance standards (Iw value of 1.0 or higher or Is value of 0.6 or higher)
-
Eligible Applicants
- Owners of buildings undergoing earthquake resistance renovation or demolition
- In case of joint ownership, the representative must apply (consent from all owners is required)
-
Grant Details
- Partial costs for seismic retrofitting work
- Partial costs for demolition work
* Applications for the fiscal year 2024 have already ended
* If you sign a construction contract before applying, you will not be eligible for assistance
For details and information about next year’s recruitment, please check the official page of Bunkyo Ward.
Summary
Our company handles many roofing projects in Bunkyo Ward.
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!
From temporary scaffolding work to roofing and exterior painting, we carry out all work 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 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!




