If you are looking for a roof repair contractor for leaks in Minami-ku, Yokohama, come to Kakeru Koumuten
Kakeru Koumuten is a company specializing in roof repairs and leak repairs in Yokohama.
We have handled numerous leak repairs and roof repairs in Minami-ku.
If you are considering a roof renovation, please feel free to consult with Kakeru Koumuten!
We respond broadly to sudden leaks after typhoons and roof repairs according to the age of the building.
If you are in need in Minami-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 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 Repairs and Leak Repairs
Roof repair contractors often have websites that showcase their construction achievements.
The construction achievements may explain the following items, so let’s check if similar repairs have been done 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 reassurance as a reference when you actually request repairs.
If you are worried 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.
Kakeru Koumuten’s roof repair case studies in Minami-ku, Yokohama
| Construction Location |
| Aoba-ku, Yokohama |
| Construction Details |
| Temporary Scaffolding Installation Roof Replacement Work Eave Repair Partial Replacement of the Rain Gutter |
| Existing Substrate / Materials Used |
| Existing Substrate: Tile New Roofing Material: Alma |
| Price Range |
| 1,000,000 – 1,100,000 |
| Construction Period |
| 6 days |
| Completion Month |
| April 2024 |
| Inquiry Details |
|
We received an inquiry from a customer living in Minami-ku, Yokohama, stating, “The current roofing material is tile, and since the building is old, I would like to replace it with a lighter roof while keeping costs down!” |
Our Proposal
The existing roofing material is mortar tile, which is no longer in production.
Given the age of the building, the roofing material is quite old, and the underlying structure has weakened.
This time, since the customer strongly desired to “keep costs down,” we proposed using Nichiha/Alma shingles.
Normally, switching from tile to Alma would reduce insulation properties, so we recommended “Super Galtect,” and proposed both options.
The customer was unsure but decided to proceed with the Alma roofing replacement, considering the age of the building and uncertainty about how much of it could be preserved.
Since some parts of the eaves and rain gutters were also deteriorating, the customer requested partial repairs as well, saying, “If we’re setting up scaffolding, we might as well do it at the same time!”
Check for Warranty and Aftercare Services
When choosing a leak repair contractor, make sure to check for warranties.
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 the contractor offers a warranty period, repairs may be 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 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 andafter-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 work, replacement work, and joint sealing work.
As part of our after-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 get estimates from multiple contractors.
Even for the same repair, costs and warranties or after-service options may vary between contractors.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower cost, obtaining estimates from multiple contractors is essential.
If a leak occurs, it’s natural to feel rushed, but
first, perform emergency measures, and when considering repairs, taking your time will lead to a satisfactory outcome!
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 quickly identified, while in other cases, it may take time to pinpoint the cause, 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 unnecessary leak repairs.
Moreover, having to investigate and then request subcontractors can incur additional time and costs.
By having the knowledge and experience to conduct work in-house, responsible and cost-effective leak repairs can be completed quickly.
Kakeru Koumuten Co., Ltd. handles 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 |
Cost Range |
|
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 |
For detailed pricing, click here!!
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!
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 in-house, we can keep costs down and provide quick leak repairs.
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 swiftly!
Customer Reviews
Service Area
Kakeru Koumuten accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Contact page for Kakeru Koumuten Co., Ltd. is here!
List of Areas in Aoba-ku, Yokohama
Aoba-ku, Yokohama Iidogaya Kamimachi / Aoba-ku, Yokohama Iidogaya Shimomachi / Aoba-ku, Yokohama Iidogaya Nakamachi / Aoba-ku, Yokohama Urakubokumachi / Aoba-ku, Yokohama Eirakucho / Aoba-ku, Yokohama Enokicho / Aoba-ku, Yokohama Ooka / Aoba-ku, Yokohama Ohashicho / Aoba-ku, Yokohama Kotodai / Aoba-ku, Yokohama Karasawa / Aoba-ku, Yokohama Kyoshincho / Aoba-ku, Yokohama Koyama / Aoba-ku, Yokohama Sannomachi / Aoba-ku, Yokohama Sanya / Aoba-ku, Yokohama Shimizuoka / Aoba-ku, Yokohama Shukucho / Aoba-ku, Yokohama Shirokanemachi / Aoba-ku, Yokohama Shiramimachi / Aoba-ku, Yokohama Shinkawacho / Aoba-ku, Yokohama Takasagocho / Aoba-ku, Yokohama Takanemachi / Aoba-ku, Yokohama Torimachi / Aoba-ku, Yokohama Nakazatocho / Aoba-ku, Yokohama Nakazato / Aoba-ku, Yokohama Nakajimacho / Aoba-ku, Yokohama Nakamuracho / Aoba-ku, Yokohama Nagata Kita / Aoba-ku, Yokohama Nagata Sannodai / Aoba-ku, Yokohama Nagata Dai / Aoba-ku, Yokohama Nagata Higashi / Aoba-ku, Yokohama Nagata Minamidai / Aoba-ku, Yokohama Nagata Minami / Aoba-ku, Yokohama Nishinakacho / Aoba-ku, Yokohama Yahatacho / Aoba-ku, Yokohama Hananokimachi / Aoba-ku, Yokohama Hieicho / Aoba-ku, Yokohama Higashimakida / Aoba-ku, Yokohama Fushimicho / Aoba-ku, Yokohama Futabacho / Aoba-ku, Yokohama Heiraku / Aoba-ku, Yokohama Bessho Nakazato Dai / Aoba-ku, Yokohama Bessho / Aoba-ku, Yokohama Horinouchicho / Aoba-ku, Yokohama Makidacho / Aoba-ku, Yokohama Maesatocho / Aoba-ku, Yokohama Magincho / Aoba-ku, Yokohama Manseicho / Aoba-ku, Yokohama Minami Ota / Aoba-ku, Yokohama Minami Yoshidacho / Aoba-ku, Yokohama Miharu Dai / Aoba-ku, Yokohama Miyamotocho / Aoba-ku, Yokohama Mutsukawa / Aoba-ku, Yokohama Mutsumicho / Aoba-ku, Yokohama Yoshinocho / Aoba-ku, Yokohama Wakamiyacho
Subsidies and Grants for Leak Repairs in Aoba-ku, Yokohama
In Aoba-ku, Yokohama, the following subsidies may be available for leak repairs. For more details, please contact us or your local government. (As of February 2025)
This program aims to create a safe city resilient to earthquakes by conducting “seismic diagnosis” of wooden individual houses in Yokohama. The city dispatches certified “wooden house seismic diagnosticians” approved by the mayor to assist citizens who wish to have a seismic diagnosis, thereby supporting their seismic measures.

https://www.city.yokohama.lg.jp/business/bunyabetsu/kenchiku/bosai/taishin/hojokinshienseido/mokutai/taishin/mokushindan.html
The Yokohama City Wooden House Earthquake Resistance Renovation Promotion Project is a system where the city subsidizes a portion of the renovation costs for earthquake resistance in wooden individual houses.
About the Yokohama City Wooden House Earthquake Resistance Renovation Subsidy System
https://www.city.yokohama.lg.jp/business/bunyabetsu/kenchiku/bosai/taishin/hojokinshienseido/mokutai/mokukaishu/mokukaishu.html




