目次
- 1 If you’re looking for a roof repair contractor in Toshima-ku, Tokyo, come to Kakeru Koumuten Co., Ltd.
- 1.1 How to Choose a Leak Repair Contractor
- 1.2 About the cost of leak repair work
- 1.3 About Kakeru Koumuten
- 1.4 Customer Reviews
- 1.5 Service Areas
- 1.6 Subsidies and Grants Available for Roof Leak Repairs in Toshima-ku, Tokyo
- 1.7 Conclusion
If you’re looking for a roof repair contractor in Toshima-ku, Tokyo, come to 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 and roof repairs in Toshima-ku, Tokyo.
If you are considering a roof renovation, please consult with Kakeru Koumuten Co., Ltd.!
We respond widely to sudden leaks that occur after typhoons and roof repairs according to the age of the building, among other services.
For those in need in Toshima-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 leak repair contractors in Toshima-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.
● 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 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, having detailed explanations of the repair contents with photos can provide 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 leak repairs.
Examples of leak repairs by Kakeru Koumuten Co., Ltd. in Toshima-ku
| Construction Location |
| Toshima-ku, Tokyo |
| Construction Details |
| Temporary scaffolding installation Roof replacement work |
| Existing Materials |
| Existing roofing material: Tile U (Contains Asbestos) |
| New Materials Used |
| New roofing material: Standing seam lock type 32 |
| Price Range |
| 700,000 yen – 800,000 yen |
| Construction Period |
| Approximately 8 days |
| Completion Month |
| November 2023 |
| Inquiry Details |
| We received an inquiry from a customer living in Toshima-ku, Tokyo, asking, “I am considering a roof replacement. I will be getting multiple estimates, but could you provide me with a quote?” |
Our Proposal
This time, since the roof slope is less than 2.5 shaku, horizontal roofing materials like Colonial or Galtect are not applicable, so we proposed the 32-type standing seam roof.
The standing seam roof does not require any clips or fasteners, as it is a molded integrated type. It is constructed from a single long sheet metal piece that extends from the peak of the roof to the eaves, which means there are no horizontal seams that could obstruct the flow of rainwater or provide opportunities for water to penetrate beneath the roofing material, minimizing the risk of leaks. It is recommended for homes with a gentle roof slope. Additionally, among metal roofs known for their lightweight characteristics, this is the lightest option, allowing for a roof replacement that can make your home more earthquake-resistant by reducing the roof’s weight.
Furthermore, the existing roofing material is a discontinued tile type U.
There are types of tile U that contain harmful substances like asbestos and those that do not. However, the tile U in this case contains asbestos, so we have taken precautions by using double packaging.
Check for Warranty and After-Service
When choosing a contractor for leak repairs, 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, contractors that offer a warranty may provide free repairs within the warranty period.
The warranty period varies by contractor and the type of work, but it typically ranges from 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 be sure to check if the contractor you are considering has a warranty andafter-service.
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 joint sealing work.
As part of our after-service, we send out annual DM, allowing for yearly inspections.
Obtain Estimates from Multiple Contractors (at least 3)
When requesting roof renovations or leak repairs, be sure to get estimates from multiple contractors.
Even for the same repair work, costs and warranty or after-service offerings can vary by contractor.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired contractor at the best possible price, obtaining estimates from multiple contractors is essential.
If a leak occurs, it’s natural to feel rushed, but
first, perform emergency measures, and if you decide to proceed with repairs, taking your time to consider will lead to a satisfactory outcome!
Kakeru Koumuten Co., Ltd. is happy to assist with emergency leak repairs!
Confirm whether we conduct leak investigations and roof repairs in-house
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.
If a contractor completely outsources roof repairs and leak repairs to subcontractors, they may lack the necessary knowledge and experience, leading to repairs in the wrong areas or suggesting ineffective leak repairs.
Additionally, having to investigate and then request a subcontractor adds extra time and costs.
By having the knowledge and experience to perform the work in-house, we can provide prompt and cost-effective responsible leak repairs.
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 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 ridge metal |
From ¥10,000 |
|
Skylight repair |
From 10,000 yen |
|
Repair of exterior walls and joints |
From 10,000 yen |
|
Repair of cap flashing |
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.
By assembling temporary scaffolding and performing 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 all of Tokyo.
Contact page for Kakeru Koumuten Co., Ltd. is here!
Toshima Ward Area List
Ikebukuro, Toshima-ku, Tokyo / Ikebukuro Honcho, Toshima-ku, Tokyo / Kanamecho, Toshima-ku, Tokyo / Kamikebukuro, Toshima-ku, Tokyo / Kita-Otsuka, Toshima-ku, Tokyo / Komagome, Toshima-ku, Tokyo / Sugamo, Toshima-ku, Tokyo / Senkawa, Toshima-ku, Tokyo / Zoshigaya, Toshima-ku, Tokyo / Takada, Toshima-ku, Tokyo / Takamatsu, Toshima-ku, Tokyo / Chihaya, Toshima-ku, Tokyo / Nagasaki, Toshima-ku, Tokyo / Nishi-Ikebukuro, Toshima-ku, Tokyo / Nishi-Sugamo, Toshima-ku, Tokyo / Higashi-Ikebukuro, Toshima-ku, Tokyo / Minami-Ikebukuro, Toshima-ku, Tokyo / Minami-Otsuka, Toshima-ku, Tokyo / Minami-Nagasaki, Toshima-ku, Tokyo / Mejiro, Toshima-ku, Tokyo
Subsidies and Grants Available for Roof Leak Repairs in Toshima-ku, Tokyo
In Toshima-ku, Tokyo, the following subsidies may be available for roof leak repairs. For more details, please contact our company or your local government. (As of February 2025)
Subsidy for Seismic Renovation of Wooden Houses
Eligible Buildings for Subsidy
- Wooden houses (single-family homes, row houses, and apartment buildings) built before May 31, 2000, with two or fewer stories, including those with mixed-use as stores, etc. (where the residential portion is more than half) (※)
- Buildings that achieve a seismic performance score of 1.0 or higher through seismic renovation work based on a reinforcement design
- Buildings that are fire-resistant or will become fire-resistant through concurrent renovation work
- Sites that do not violate Article 43 of the Building Standards Act
- Buildings (including fences, etc.) that do not protrude into roads as defined by the Building Standards Act
- Other buildings that do not raise significant doubts under the Building Standards Act
※ For buildings constructed between June 1, 1981, and May 31, 2000, they must use the traditional frame construction method.
Eligible Recipients for Subsidy
Starting from April 2024, the eligibility criteria have been expanded from “owners and residents of eligible buildings” to the following:
Owners of eligible buildings, relatives of the owner (limited to first and second degree), or residents who are not in arrears on their resident tax.
However, the following individuals are excluded. This does not apply to those recognized by the ward mayor as particularly necessary.
- The national government, local public entities, and other similar organizations
- Individuals who have received a decision for subsidy provision for seismic renovation work on wooden houses outside of these guidelines.
- Businesses aiming for profit through the sale of buildings
Amount of Subsidy
Two-thirds of the costs incurred for seismic renovation work (※) (up to 1,000,000 yen)
Conclusion
Our company handles many roofing projects in Toshima-ku.
We are happy to assist with partial roof repairs such as roof overlay work, roof replacement, and roof 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 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 work 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!




