If you are looking for a roof repair contractor in Nishi-ku, Yokohama, come to Kakeru Koumuten
Kakeru Koumuten is a remodeling company specializing in roof repairs and leak repairs in Yokohama.
We have handled numerous leak repairs and roof repairs in Nishi-ku.
If you are considering a roof renovation, please consult with Kakeru Koumuten!
We respond widely to sudden leaks after typhoons and roof repairs based on age of the building.
If you are in need in Nishi-ku, Yokohama, we can respond as soon as the same day, so 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 results may explain the following items, so be sure to check if similar repairs have been performed on your home.
Repair details,the background leading to the repair,materials used,repair costs,repair duration, etc.
Additionally, having detailed explanations of the repair contents with photos 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 adequately, 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 Nishi-ku, Yokohama
A customer living in Nishi-ku, Yokohama contacted us saying, “I was advised to consider a roof overlay by my house manufacturer during a regular inspection, and since it’s quite expensive, I would like to compare estimates from several companies!”
Our Proposal
The roof slope is steep, requiring scaffolding.
Due to the high cost of scaffolding, we proposed a roof overlay method using Diplomat Star, which has a 30-year manufacturer warranty, based on the customer’s request to “make the roof renovation last as long as possible with a single project.”
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, 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 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 warranties andafter-service options.
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 work, costs may vary between contractors, as well as warranties and after-sales services.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower price, it is essential to obtain estimates from multiple companies.
If a leak occurs, it’s natural to feel rushed, but
first perform emergency 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 only!
Check if the company conducts leak investigations and roof repairs in-house
Leaks can sometimes be easily identified, while in other cases, the source of the leak may be difficult to pinpoint, requiring knowledge and experience.
Contractors that completely outsource roof repairs and leak repairs may lack the necessary knowledge and experience, leading to repairs on incorrect areas or suggesting ineffective leak repairs.
Moreover, having to investigate and then request a subcontractor adds extra time and costs.
By having the knowledge and experience to conduct work in-house, we can provide prompt and cost-effective responsible leak repairs.
Kakeru Koumuten conducts leak investigations and 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 |
20,000 to 200,000 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 coping metal |
10,000 yen and up |
|
Waterproofing work for balconies and rooftops |
80,000 yen and up |
For detailed pricing, click here!!
For exterior renovations in Nishi-ku, Yokohama, click here!
For exterior wall painting in Nishi-ku, Yokohama, click here!!
For roof renovations in Nishi-ku, Yokohama, click here!
For exterior wall overlay work in Nishi-ku, Yokohama, click here!
About Kakeru Koumuten
Kakeru Koumuten Co., Ltd. is a renovation company based in Aoba-ku, Yokohama, Kanagawa Prefecture, specializing in roofing, painting, and scaffolding work with complete in-house construction.
By assembling our own temporary scaffolding, we can perform roof repairs quickly and cost-effectively, allowing for prompt 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!
Since we have all the necessary parts for leak repairs, we can respond quickly!
Customer Reviews
Service Area
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo Metropolis.
Contact page for Kakeru Koumuten Co., Ltd. is here!
List of Areas in Nishi-ku, Yokohama
Aoba-ku, Yokohama Akamoncho / Aoba-ku, Yokohama Higashigaoka / Aoba-ku, Yokohama Isecho / Aoba-ku, Yokohama Oimatsu-cho / Aoba-ku, Yokohama Okano / Aoba-ku, Yokohama Kasumigaoka / Aoba-ku, Yokohama Kitakaruizawa / Aoba-ku, Yokohama Kitakou / Aoba-ku, Yokohama Kusunoki-cho / Aoba-ku, Yokohama Kubomachi / Aoba-ku, Yokohama Goshoyama-cho / Aoba-ku, Yokohama Sakaenotani / Aoba-ku, Yokohama Sakuragicho / Aoba-ku, Yokohama Asamadai / Aoba-ku, Yokohama Asama-cho / Aoba-ku, Yokohama Takashima / Aoba-ku, Yokohama Chuo / Aoba-ku, Yokohama Tobe-cho / Aoba-ku, Yokohama Tobe-honmachi / Aoba-ku, Yokohama Nishi-tobe-cho / Aoba-ku, Yokohama Nishi-hiranuma-cho / Aoba-ku, Yokohama Nishi-mae-cho / Aoba-ku, Yokohama Hanasakicho / Aoba-ku, Yokohama Hamamatsucho / Aoba-ku, Yokohama Higashikubomachi / Aoba-ku, Yokohama Hiranuma / Aoba-ku, Yokohama Fujidana-cho / Aoba-ku, Yokohama Minamikaruizawa / Aoba-ku, Yokohama Minami-saiwai / Aoba-ku, Yokohama Minami-asama-cho / Aoba-ku, Yokohama Miyagatani / Aoba-ku, Yokohama Miyazakicho / Aoba-ku, Yokohama Motokubomachi / Aoba-ku, Yokohama Momijioka / Aoba-ku, Yokohama Minatomirai
Possible Subsidies and Grants for Leak Repairs in Nishi-ku, Yokohama
In Nishi-ku, Yokohama, the following subsidies may be available for leak repairs. For details, please contact our company 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” recognized by the mayor to conduct surveys for citizens wishing to have a seismic diagnosis, 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 costs for earthquake resistance renovation work on wooden private residences.
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
Features of Nishi Ward, Yokohama
Nishi Ward, Yokohama, is located in the central part of Yokohama City and is the smallest ward in terms of area, but it has developed as a center for commerce and business. The population is relatively small at about 100,000, but the area is characterized by modern cityscapes with office buildings and commercial facilities lining the vicinity of Yokohama Station.
In terms of transportation, various lines including JR, Tokyu Line, Keikyu Line, Sotetsu Line, Minatomirai Line, and the municipal subway converge at Yokohama Station, providing excellent access to Tokyo and various locations within the city. Additionally, the bus routes are well-developed, making movement within and outside the ward smooth.
Our company has handled numerous roofing projects in and around Nishi Ward, Yokohama. We can accommodate a wide range of services from roof overlay work and roof replacement to leak repairs, whether it’s minor repairs or large-scale roofing projects. We respond quickly and carefully to sudden roofing troubles for local residents, ensuring that you can trust us with your work. If you have any concerns regarding your home, please feel free to consult us!
We promise careful and reliable construction, prioritizing your peace of mind!
Summary
Our company handles many roofing projects in Nishi Ward, Yokohama.
We are happy to assist with partial roof repairs such as roof overlay work, roof replacement, and leak repairs, as well as other repairs!
“Just 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!




